diff --git a/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFSRecordsStorageKind.kt b/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFSRecordsStorageKind.kt
index 7273fc92e6d5..650eaa7c08c5 100644
--- a/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFSRecordsStorageKind.kt
+++ b/platform/platform-impl/src/com/intellij/openapi/vfs/newvfs/persistent/PersistentFSRecordsStorageKind.kt
@@ -1,7 +1,6 @@
 // Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.openapi.vfs.newvfs.persistent
 
-import com.intellij.util.SystemProperties
 import com.intellij.util.io.IOUtil
 import com.intellij.util.io.PageCacheUtils
 import com.intellij.util.io.PagedFileStorageWithRWLockedPageContent
@@ -12,41 +11,17 @@ import com.intellij.util.io.pagecache.impl.PageContentLockingStrategy
 import org.jetbrains.annotations.VisibleForTesting
 import java.io.IOException
 import java.nio.file.Path
-import kotlin.io.path.exists
 
 enum class PersistentFSRecordsStorageKind : StorageFactory<PersistentFSRecordsStorage> {
 
   /** Currently the default impl */
   OVER_MMAPPED_FILE {
-    /**
-     * Fallback option: usually [PersistentFSConnector] deals with storages version changes just fine.
-     * But there are cases where it fails: e.g. with mmapped storages on Win, there file once mapped is hard
-     * to remove (and [PersistentFSConnector] relies on ability to just remove legacy storages files).
-     * In such cases, this option could help get rid of the legacy file early, before it is mapped
-     * MAYBE RC: we probably outgrow that issues:
-     *           a) it's been 2 releases since we moved to memory-mapped for fs-records, i.e. everybody who could have this
-     *           problem -- already has fixed it
-     *           b) i've done a lot for memory-mapped files to work properly on Windows also
-     */
-    private val FAIL_EARLY_IF_LEGACY_STORAGE_DETECTED: Boolean = SystemProperties.getBooleanProperty(
-      "vfs.fail-early-if-legacy-storage-detected", false)
 
-    override fun open(storagePath: Path): PersistentFSRecordsLockFreeOverMMappedFile {
-      //TODO RC: this should be replaced with/encapsulated into StorageFactory<PersistentFSStorage>
-      if (FAIL_EARLY_IF_LEGACY_STORAGE_DETECTED) {
-        val legacyLengthFile = storagePath.resolveSibling(storagePath.fileName.toString() + ".len")
-        if (legacyLengthFile.exists()) {
-          //MAYBE RC: actually, here we can _migrate_ legacy file to the new format: move the files to the tmp folder,
-          // create empty new storage, and just copy all records from legacy storage to the new one...
-          throw IOException("Legacy records file detected (${legacyLengthFile} exists): VFS rebuild required")
-        }
+    override fun open(storagePath: Path): PersistentFSRecordsLockFreeOverMMappedFile = MMappedFileStorageFactory.withDefaults()
+      .pageSize(PersistentFSRecordsLockFreeOverMMappedFile.DEFAULT_MAPPED_CHUNK_SIZE)
+      .wrapStorageSafely<PersistentFSRecordsLockFreeOverMMappedFile, IOException>(storagePath) { storage ->
+        PersistentFSRecordsLockFreeOverMMappedFile(storage)
       }
-      return MMappedFileStorageFactory.withDefaults()
-        .pageSize(PersistentFSRecordsLockFreeOverMMappedFile.DEFAULT_MAPPED_CHUNK_SIZE)
-        .wrapStorageSafely<PersistentFSRecordsLockFreeOverMMappedFile, IOException>(storagePath) { storage ->
-          PersistentFSRecordsLockFreeOverMMappedFile(storage)
-        }
-    }
   },
 
   /** Fallback impl for [OVER_MMAPPED_FILE] if something goes terribly wrong, and we can't fix it quickly */