diff --git a/src/test/java/com/google/devtools/build/lib/analysis/BlazeDirectoriesTest.java b/src/test/java/com/google/devtools/build/lib/analysis/BlazeDirectoriesTest.java
index 28a4a8c..a622ce9 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/BlazeDirectoriesTest.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/BlazeDirectoriesTest.java
@@ -34,17 +34,20 @@
     Path installBase = fs.getPath("/my/install");
     Path outputBase = fs.getPath("/my/output");
     Path workspace = fs.getPath("/my/ws");
-    BlazeDirectories directories = new BlazeDirectories(installBase, outputBase, workspace, "foo");
-    assertThat(outputBase.getChild("ws")).isEqualTo(directories.getExecRoot());
+    BlazeDirectories directories =
+        new BlazeDirectories(new ServerDirectories(installBase, outputBase), workspace, "foo");
+    assertThat(outputBase.getRelative("execroot/ws")).isEqualTo(directories.getExecRoot());
 
     workspace = null;
-    directories = new BlazeDirectories(installBase, outputBase, workspace, "foo");
-    assertThat(outputBase.getChild(BlazeDirectories.DEFAULT_EXEC_ROOT))
+    directories =
+        new BlazeDirectories(new ServerDirectories(installBase, outputBase), workspace, "foo");
+    assertThat(outputBase.getRelative("execroot/" + BlazeDirectories.DEFAULT_EXEC_ROOT))
         .isEqualTo(directories.getExecRoot());
 
     workspace = fs.getPath("/");
-    directories = new BlazeDirectories(installBase, outputBase, workspace, "foo");
-    assertThat(outputBase.getChild(BlazeDirectories.DEFAULT_EXEC_ROOT))
+    directories =
+        new BlazeDirectories(new ServerDirectories(installBase, outputBase), workspace, "foo");
+    assertThat(outputBase.getRelative("execroot/" + BlazeDirectories.DEFAULT_EXEC_ROOT))
         .isEqualTo(directories.getExecRoot());
   }
 
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/actions/TemplateExpansionActionTest.java b/src/test/java/com/google/devtools/build/lib/analysis/actions/TemplateExpansionActionTest.java
index b68b4bf..3f099f6 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/actions/TemplateExpansionActionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/actions/TemplateExpansionActionTest.java
@@ -26,6 +26,7 @@
 import com.google.devtools.build.lib.actions.Executor;
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.actions.TemplateExpansionAction.Substitution;
 import com.google.devtools.build.lib.analysis.actions.TemplateExpansionAction.Template;
 import com.google.devtools.build.lib.analysis.config.BinTools;
@@ -67,8 +68,7 @@
     substitutions.add(Substitution.of("%value%", "bar"));
     directories =
         new BlazeDirectories(
-            scratch.resolve("/install"),
-            scratch.resolve("/base"),
+            new ServerDirectories(scratch.resolve("/install"), scratch.resolve("/base")),
             scratch.resolve("/workspace"),
             "mock-product-name");
     binTools = BinTools.empty(directories);
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationTest.java b/src/test/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationTest.java
index 6330a413..abda893 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/config/BuildConfigurationTest.java
@@ -48,8 +48,8 @@
     }
 
     BuildConfiguration config = create("--cpu=piii");
-    String outputDirPrefix = outputBase
-        + "/" + config.getMainRepositoryName() + "/blaze-out/.*piii-fastbuild";
+    String outputDirPrefix =
+        outputBase + "/execroot/" + config.getMainRepositoryName() + "/blaze-out/.*piii-fastbuild";
 
     assertThat(config.getOutputDirectory(RepositoryName.MAIN).getPath().toString())
         .matches(outputDirPrefix);
@@ -71,7 +71,7 @@
     assertThat(config.getOutputDirectory(RepositoryName.MAIN).getPath().toString())
         .matches(
             outputBase
-                + "/"
+                + "/execroot/"
                 + config.getMainRepositoryName()
                 + "/blaze-out/.*k8-fastbuild-test");
   }
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
index 0cdc4a3..4517b9f 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/AnalysisTestCase.java
@@ -30,6 +30,7 @@
 import com.google.devtools.build.lib.analysis.ConfiguredTarget;
 import com.google.devtools.build.lib.analysis.InputFileConfiguredTarget;
 import com.google.devtools.build.lib.analysis.RuleDefinition;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.config.BinTools;
 import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationCollection;
@@ -144,7 +145,10 @@
     analysisMock = getAnalysisMock();
     pkgLocator = new PathPackageLocator(outputBase, ImmutableList.of(rootDirectory));
     directories =
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, analysisMock.getProductName());
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     workspaceStatusActionFactory =
         new AnalysisTestUtil.DummyWorkspaceStatusActionFactory(directories);
 
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
index 3d0b1d2..aa2bf35 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/BuildViewTestCase.java
@@ -65,6 +65,7 @@
 import com.google.devtools.build.lib.analysis.Runfiles;
 import com.google.devtools.build.lib.analysis.RunfilesProvider;
 import com.google.devtools.build.lib.analysis.RunfilesSupport;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.SourceManifestAction;
 import com.google.devtools.build.lib.analysis.TransitiveInfoCollection;
 import com.google.devtools.build.lib.analysis.TransitiveInfoProvider;
@@ -199,7 +200,10 @@
   public final void initializeSkyframeExecutor() throws Exception {
     analysisMock = getAnalysisMock();
     directories =
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, analysisMock.getProductName());
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     binTools = BinTools.forUnitTesting(directories, analysisMock.getEmbeddedTools());
     mockToolsConfig = new MockToolsConfig(rootDirectory, false);
     analysisMock.setupMockClient(mockToolsConfig);
diff --git a/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java b/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
index 22f6ff8..ba5c5ae 100644
--- a/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/analysis/util/ConfigurationTestCase.java
@@ -23,6 +23,7 @@
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.config.BinTools;
 import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
 import com.google.devtools.build.lib.analysis.config.BuildConfigurationCollection;
@@ -100,7 +101,10 @@
         new PathPackageLocator(outputBase, ImmutableList.of(rootDirectory));
     final PackageFactory pkgFactory;
     BlazeDirectories directories =
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, analysisMock.getProductName());
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     pkgFactory =
         analysisMock
             .getPackageFactoryBuilderForTesting()
diff --git a/src/test/java/com/google/devtools/build/lib/exec/BlazeExecutorTest.java b/src/test/java/com/google/devtools/build/lib/exec/BlazeExecutorTest.java
index 05c65a7..1912960 100644
--- a/src/test/java/com/google/devtools/build/lib/exec/BlazeExecutorTest.java
+++ b/src/test/java/com/google/devtools/build/lib/exec/BlazeExecutorTest.java
@@ -20,6 +20,7 @@
 import com.google.common.eventbus.EventBus;
 import com.google.devtools.build.lib.actions.SpawnActionContext;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.config.BinTools;
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.events.Reporter;
@@ -48,8 +49,7 @@
     InMemoryFileSystem fs = new InMemoryFileSystem();
     directories =
         new BlazeDirectories(
-            fs.getPath("/install"),
-            fs.getPath("/base"),
+            new ServerDirectories(fs.getPath("/install"), fs.getPath("/base")),
             fs.getPath("/workspace"),
             "mock-product-name");
     binTools = BinTools.empty(directories);
diff --git a/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java b/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
index 0814dac..e4f1d51 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/packages/util/PackageLoadingTestCase.java
@@ -21,6 +21,7 @@
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
 import com.google.devtools.build.lib.analysis.RuleDefinition;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.clock.BlazeClock;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.cmdline.LabelSyntaxException;
@@ -107,7 +108,9 @@
         SequencedSkyframeExecutor.create(
             packageFactory,
             new BlazeDirectories(
-                outputBase, outputBase, rootDirectory, loadingMock.getProductName()),
+                new ServerDirectories(outputBase, outputBase),
+                rootDirectory,
+                loadingMock.getProductName()),
             null, /* BinTools */
             null, /* workspaceStatusActionFactory */
             ruleClassProvider.getBuildInfoFactories(),
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/BuildFileModificationTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/BuildFileModificationTest.java
index 6310b97..fb7581b 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/BuildFileModificationTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/BuildFileModificationTest.java
@@ -21,6 +21,7 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.packages.NoSuchPackageException;
@@ -73,7 +74,10 @@
     analysisMock = AnalysisMock.get();
     ruleClassProvider = analysisMock.createRuleClassProvider();
     BlazeDirectories directories =
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, analysisMock.getProductName());
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     skyframeExecutor =
         SequencedSkyframeExecutor.create(
             analysisMock
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
index 9eb5b20..2afdf03 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/IncrementalLoadingTest.java
@@ -22,6 +22,7 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.eventbus.EventBus;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.clock.BlazeClock;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.events.Reporter;
@@ -468,8 +469,7 @@
                   .getPackageFactoryBuilderForTesting()
                   .build(loadingMock.createRuleClassProvider(), fs),
               new BlazeDirectories(
-                  fs.getPath("/install"),
-                  fs.getPath("/output"),
+                  new ServerDirectories(fs.getPath("/install"), fs.getPath("/output")),
                   workspace,
                   loadingMock.getProductName()),
               null, /* BinTools */
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
index ad13b5d..5849ce6 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/LoadingPhaseRunnerTest.java
@@ -27,6 +27,7 @@
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.BuildView;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.cmdline.TargetParsingException;
@@ -614,8 +615,7 @@
       storedErrors = new StoredEventHandler();
       BlazeDirectories directories =
           new BlazeDirectories(
-              fs.getPath("/install"),
-              fs.getPath("/output"),
+              new ServerDirectories(fs.getPath("/install"), fs.getPath("/output")),
               workspace,
               analysisMock.getProductName());
       skyframeExecutor =
diff --git a/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java b/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
index 635be58..1cffeb7 100644
--- a/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
+++ b/src/test/java/com/google/devtools/build/lib/pkgcache/PackageCacheTest.java
@@ -22,6 +22,7 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.clock.BlazeClock;
 import com.google.devtools.build.lib.cmdline.Label;
@@ -79,7 +80,10 @@
     analysisMock = AnalysisMock.get();
     ruleClassProvider = analysisMock.createRuleClassProvider();
     BlazeDirectories directories =
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, analysisMock.getProductName());
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     PackageFactory.BuilderForTesting packageFactoryBuilder =
         analysisMock.getPackageFactoryBuilderForTesting();
     if (!doPackageLoadingChecks) {
diff --git a/src/test/java/com/google/devtools/build/lib/rules/ExternalPackageUtilTest.java b/src/test/java/com/google/devtools/build/lib/rules/ExternalPackageUtilTest.java
index b6a0037..3b9b3a5 100644
--- a/src/test/java/com/google/devtools/build/lib/rules/ExternalPackageUtilTest.java
+++ b/src/test/java/com/google/devtools/build/lib/rules/ExternalPackageUtilTest.java
@@ -21,6 +21,7 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.analysis.util.BuildViewTestCase;
 import com.google.devtools.build.lib.cmdline.Label;
@@ -85,7 +86,9 @@
         new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
     BlazeDirectories directories =
         new BlazeDirectories(
-            rootDirectory, outputBase, rootDirectory, analysisMock.getProductName());
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     ExternalFilesHelper externalFilesHelper =
         new ExternalFilesHelper(
             pkgLocator,
diff --git a/src/test/java/com/google/devtools/build/lib/rules/repository/RepositoryDelegatorTest.java b/src/test/java/com/google/devtools/build/lib/rules/repository/RepositoryDelegatorTest.java
index 849a3b7..87cca16 100644
--- a/src/test/java/com/google/devtools/build/lib/rules/repository/RepositoryDelegatorTest.java
+++ b/src/test/java/com/google/devtools/build/lib/rules/repository/RepositoryDelegatorTest.java
@@ -19,6 +19,7 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
 import com.google.devtools.build.lib.events.StoredEventHandler;
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
@@ -74,8 +75,8 @@
         ImmutableMap.<String, RepositoryFunction>of(), null, new AtomicBoolean(true));
     AtomicReference<PathPackageLocator> pkgLocator = new AtomicReference<>(
         new PathPackageLocator(root, ImmutableList.of(root)));
-    BlazeDirectories directories = new BlazeDirectories(root, root, root,
-        TestConstants.PRODUCT_NAME);
+    BlazeDirectories directories =
+        new BlazeDirectories(new ServerDirectories(root, root), root, TestConstants.PRODUCT_NAME);
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator,
         ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
diff --git a/src/test/java/com/google/devtools/build/lib/runtime/BuildEventStreamerTest.java b/src/test/java/com/google/devtools/build/lib/runtime/BuildEventStreamerTest.java
index 5e6116a..2c5a263 100644
--- a/src/test/java/com/google/devtools/build/lib/runtime/BuildEventStreamerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/runtime/BuildEventStreamerTest.java
@@ -29,6 +29,7 @@
 import com.google.devtools.build.lib.actions.EventReportingArtifacts;
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.config.BuildConfiguration;
 import com.google.devtools.build.lib.analysis.config.BuildOptions;
 import com.google.devtools.build.lib.analysis.config.FragmentOptions;
@@ -613,11 +614,13 @@
             ImmutableSet.<BuildEventId>of(ProgressEvent.INITIAL_PROGRESS_UPDATE));
     BuildConfiguration configuration =
         new BuildConfiguration(
-            new BlazeDirectories(outputBase, outputBase, rootDirectory, "productName"),
-            ImmutableMap.<Class<? extends BuildConfiguration.Fragment>,
-                          BuildConfiguration.Fragment>of(),
-            BuildOptions.of(ImmutableList.<Class<? extends FragmentOptions>>of(
-              BuildConfiguration.Options.class)),
+            new BlazeDirectories(
+                new ServerDirectories(outputBase, outputBase), rootDirectory, "productName"),
+            ImmutableMap
+                .<Class<? extends BuildConfiguration.Fragment>, BuildConfiguration.Fragment>of(),
+            BuildOptions.of(
+                ImmutableList.<Class<? extends FragmentOptions>>of(
+                    BuildConfiguration.Options.class)),
             "workspace");
     BuildEvent firstWithConfiguration =
         new GenericConfigurationEvent(testId("first"), configuration);
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java b/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
index c01285e..127261d 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/ArtifactFunctionTestCase.java
@@ -21,6 +21,7 @@
 import com.google.devtools.build.lib.actions.ActionAnalysisMetadata;
 import com.google.devtools.build.lib.actions.ActionLookupValue.ActionLookupKey;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
 import com.google.devtools.build.lib.skyframe.ExternalFilesHelper.ExternalFileAction;
 import com.google.devtools.build.lib.skyframe.PackageLookupFunction.CrossRepositoryLabelViolationStrategy;
@@ -75,8 +76,8 @@
     setupRoot(new CustomInMemoryFs());
     AtomicReference<PathPackageLocator> pkgLocator = new AtomicReference<>(new PathPackageLocator(
         root.getFileSystem().getPath("/outputbase"), ImmutableList.of(root)));
-    BlazeDirectories directories = new BlazeDirectories(root, root, root,
-        TestConstants.PRODUCT_NAME);
+    BlazeDirectories directories =
+        new BlazeDirectories(new ServerDirectories(root, root), root, TestConstants.PRODUCT_NAME);
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator,
         ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
index bcbeb54..5862dfc 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/ContainingPackageLookupFunctionTest.java
@@ -20,6 +20,7 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.common.testing.EqualsTester;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
@@ -76,7 +77,9 @@
     deletedPackages = new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
     BlazeDirectories directories =
         new BlazeDirectories(
-            rootDirectory, outputBase, rootDirectory, analysisMock.getProductName());
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     ExternalFilesHelper externalFilesHelper =
         new ExternalFilesHelper(
             pkgLocator,
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
index 103211f..2daf071 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FileFunctionTest.java
@@ -30,6 +30,7 @@
 import com.google.common.collect.Sets;
 import com.google.common.testing.EqualsTester;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.clock.BlazeClock;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
@@ -121,7 +122,8 @@
   private SequentialBuildDriver makeDriver(ExternalFileAction externalFileAction) {
     AtomicReference<PathPackageLocator> pkgLocatorRef = new AtomicReference<>(pkgLocator);
     BlazeDirectories directories =
-        new BlazeDirectories(pkgRoot, outputBase, pkgRoot, TestConstants.PRODUCT_NAME);
+        new BlazeDirectories(
+            new ServerDirectories(pkgRoot, outputBase), pkgRoot, TestConstants.PRODUCT_NAME);
     ExternalFilesHelper externalFilesHelper =
         new ExternalFilesHelper(pkgLocatorRef, externalFileAction, directories);
     differencer = new RecordingDifferencer();
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
index 8c18bd0..d9068a0 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FilesetEntryFunctionTest.java
@@ -31,6 +31,7 @@
 import com.google.devtools.build.lib.actions.FilesetTraversalParamsFactory;
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.events.NullEventHandler;
@@ -84,10 +85,14 @@
         new PathPackageLocator(outputBase, ImmutableList.of(rootDirectory)));
     AtomicReference<ImmutableSet<PackageIdentifier>> deletedPackages =
         new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
-    ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
-        pkgLocator,
-        ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
-        new BlazeDirectories(outputBase, outputBase, rootDirectory, TestConstants.PRODUCT_NAME));
+    ExternalFilesHelper externalFilesHelper =
+        new ExternalFilesHelper(
+            pkgLocator,
+            ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
+            new BlazeDirectories(
+                new ServerDirectories(outputBase, outputBase),
+                rootDirectory,
+                TestConstants.PRODUCT_NAME));
 
     Map<SkyFunctionName, SkyFunction> skyFunctions = new HashMap<>();
 
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
index 2bd2ba9..80e3bde 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/FilesystemValueCheckerTest.java
@@ -33,6 +33,7 @@
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.actions.util.TestAction;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.events.NullEventHandler;
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
@@ -102,8 +103,9 @@
 
     AtomicReference<PathPackageLocator> pkgLocator = new AtomicReference<>(new PathPackageLocator(
         fs.getPath("/output_base"), ImmutableList.of(pkgRoot)));
-    BlazeDirectories directories = new BlazeDirectories(pkgRoot, pkgRoot, pkgRoot,
-        TestConstants.PRODUCT_NAME);
+    BlazeDirectories directories =
+        new BlazeDirectories(
+            new ServerDirectories(pkgRoot, pkgRoot), pkgRoot, TestConstants.PRODUCT_NAME);
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator, ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS, directories);
     skyFunctions.put(SkyFunctions.FILE_STATE, new FileStateFunction(
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
index 8c938ee..bfa4e9d 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/GlobFunctionTest.java
@@ -25,6 +25,7 @@
 import com.google.common.collect.Maps;
 import com.google.common.testing.EqualsTester;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.events.NullEventHandler;
 import com.google.devtools.build.lib.pkgcache.PathPackageLocator;
@@ -122,10 +123,12 @@
   private Map<SkyFunctionName, SkyFunction> createFunctionMap() {
     AtomicReference<ImmutableSet<PackageIdentifier>> deletedPackages =
         new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
-    ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
-        pkgLocator,
-        ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
-        new BlazeDirectories(root, root, root, TestConstants.PRODUCT_NAME));
+    ExternalFilesHelper externalFilesHelper =
+        new ExternalFilesHelper(
+            pkgLocator,
+            ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
+            new BlazeDirectories(
+                new ServerDirectories(root, root), root, TestConstants.PRODUCT_NAME));
 
     Map<SkyFunctionName, SkyFunction> skyFunctions = new HashMap<>();
     skyFunctions.put(SkyFunctions.GLOB, new GlobFunction(alwaysUseDirListing()));
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
index 610eb72..3508a7f 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/LocalRepositoryLookupFunctionTest.java
@@ -19,6 +19,7 @@
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
@@ -68,7 +69,9 @@
     deletedPackages = new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
     BlazeDirectories directories =
         new BlazeDirectories(
-            rootDirectory, outputBase, rootDirectory, analysisMock.getProductName());
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator, ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS, directories);
 
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
index 5404d8e..9acccb3 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/PackageLookupFunctionTest.java
@@ -22,6 +22,7 @@
 import com.google.common.collect.ImmutableSet;
 import com.google.common.testing.EqualsTester;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
@@ -86,7 +87,9 @@
     deletedPackages = new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
     BlazeDirectories directories =
         new BlazeDirectories(
-            rootDirectory, outputBase, rootDirectory, analysisMock.getProductName());
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator, ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS, directories);
 
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
index b11543e..a3fd71d 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/RecursiveFilesystemTraversalFunctionTest.java
@@ -31,6 +31,7 @@
 import com.google.devtools.build.lib.actions.Root;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredRuleClassProvider;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.util.AnalysisMock;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.events.NullEventHandler;
@@ -90,7 +91,9 @@
         new AtomicReference<>(ImmutableSet.<PackageIdentifier>of());
     BlazeDirectories directories =
         new BlazeDirectories(
-            rootDirectory, outputBase, rootDirectory, analysisMock.getProductName());
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            analysisMock.getProductName());
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator, ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS, directories);
 
diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
index 1143d3c..b243828 100644
--- a/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
+++ b/src/test/java/com/google/devtools/build/lib/skyframe/TimestampBuilderTestCase.java
@@ -48,6 +48,7 @@
 import com.google.devtools.build.lib.actions.util.TestAction;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
 import com.google.devtools.build.lib.analysis.ConfiguredTarget;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.analysis.TopLevelArtifactContext;
 import com.google.devtools.build.lib.buildtool.SkyframeBuilder;
 import com.google.devtools.build.lib.clock.BlazeClock;
@@ -158,8 +159,11 @@
     AtomicReference<PathPackageLocator> pkgLocator =
         new AtomicReference<>(new PathPackageLocator(outputBase, ImmutableList.of(rootDirectory)));
     AtomicReference<TimestampGranularityMonitor> tsgmRef = new AtomicReference<>(tsgm);
-    BlazeDirectories directories = new BlazeDirectories(rootDirectory, outputBase, rootDirectory,
-        TestConstants.PRODUCT_NAME);
+    BlazeDirectories directories =
+        new BlazeDirectories(
+            new ServerDirectories(rootDirectory, outputBase),
+            rootDirectory,
+            TestConstants.PRODUCT_NAME);
     ExternalFilesHelper externalFilesHelper = new ExternalFilesHelper(
         pkgLocator,
         ExternalFileAction.DEPEND_ON_EXTERNAL_PKG_FOR_EXTERNAL_REPO_PATHS,
diff --git a/src/test/java/com/google/devtools/build/lib/standalone/StandaloneSpawnStrategyTest.java b/src/test/java/com/google/devtools/build/lib/standalone/StandaloneSpawnStrategyTest.java
index 0ca75c3..46616f6 100644
--- a/src/test/java/com/google/devtools/build/lib/standalone/StandaloneSpawnStrategyTest.java
+++ b/src/test/java/com/google/devtools/build/lib/standalone/StandaloneSpawnStrategyTest.java
@@ -34,6 +34,7 @@
 import com.google.devtools.build.lib.actions.SpawnActionContext;
 import com.google.devtools.build.lib.actions.util.ActionsTestUtil;
 import com.google.devtools.build.lib.analysis.BlazeDirectories;
+import com.google.devtools.build.lib.analysis.ServerDirectories;
 import com.google.devtools.build.lib.clock.BlazeClock;
 import com.google.devtools.build.lib.events.PrintingEventHandler;
 import com.google.devtools.build.lib.events.Reporter;
@@ -106,7 +107,8 @@
     outputBase.createDirectory();
 
     BlazeDirectories directories =
-        new BlazeDirectories(outputBase, outputBase, workspaceDir, "mock-product-name");
+        new BlazeDirectories(
+            new ServerDirectories(outputBase, outputBase), workspaceDir, "mock-product-name");
     // This call implicitly symlinks the integration bin tools into the exec root.
     IntegrationMock.get().getIntegrationBinTools(directories, TestConstants.WORKSPACE_NAME);
     OptionsParser optionsParser = OptionsParser.newOptionsParser(ExecutionOptions.class);