diff --git a/crates/tranquil-store/Cargo.toml b/crates/tranquil-store/Cargo.toml
index e73e495..8c73dce 100644
--- a/crates/tranquil-store/Cargo.toml
+++ b/crates/tranquil-store/Cargo.toml
@@ -46,6 +46,7 @@ test-harness = ["dep:tempfile"]
 jemalloc = ["dep:tikv-jemallocator"]
 gauntlet-cli = ["test-harness", "dep:clap", "dep:toml", "dep:tracing-subscriber", "jemalloc"]
 gauntlet-jemalloc-prof = []
+skip-fsync = []
 
 [[bin]]
 name = "tranquil-gauntlet"
diff --git a/crates/tranquil-store/src/io.rs b/crates/tranquil-store/src/io.rs
index a9a57e6..eceed66 100644
--- a/crates/tranquil-store/src/io.rs
+++ b/crates/tranquil-store/src/io.rs
@@ -267,10 +267,16 @@ impl StorageIO for RealIO {
         self.lookup(id)?.write_at(buf, offset)
     }
 
+    #[cfg(not(feature = "skip-fsync"))]
     fn sync(&self, id: FileId) -> io::Result<()> {
         self.lookup(id)?.sync_data()
     }
 
+    #[cfg(feature = "skip-fsync")]
+    fn sync(&self, id: FileId) -> io::Result<()> {
+        self.lookup(id).map(|_| ())
+    }
+
     fn file_size(&self, id: FileId) -> io::Result<u64> {
         self.lookup(id)?.metadata().map(|m| m.len())
     }
@@ -291,10 +297,16 @@ impl StorageIO for RealIO {
         fs::create_dir_all(path)
     }
 
+    #[cfg(not(feature = "skip-fsync"))]
     fn sync_dir(&self, path: &Path) -> io::Result<()> {
         fs::File::open(path)?.sync_all()
     }
 
+    #[cfg(feature = "skip-fsync")]
+    fn sync_dir(&self, path: &Path) -> io::Result<()> {
+        fs::File::open(path).map(|_| ())
+    }
+
     fn list_dir(&self, path: &Path) -> io::Result<Vec<PathBuf>> {
         fs::read_dir(path)?
             .map(|entry| entry.map(|e| e.path()))
diff --git a/crates/tranquil-store/src/metastore/mod.rs b/crates/tranquil-store/src/metastore/mod.rs
index 4f22bfb..fc97b95 100644
--- a/crates/tranquil-store/src/metastore/mod.rs
+++ b/crates/tranquil-store/src/metastore/mod.rs
@@ -42,6 +42,11 @@ use self::user_hash::UserHashMap;
 
 const CURRENT_FORMAT_VERSION: u64 = 3;
 
+#[cfg(feature = "skip-fsync")]
+const METASTORE_PERSIST_MODE: fjall::PersistMode = fjall::PersistMode::Buffer;
+#[cfg(not(feature = "skip-fsync"))]
+const METASTORE_PERSIST_MODE: fjall::PersistMode = fjall::PersistMode::SyncData;
+
 #[derive(Debug, Clone)]
 pub struct MetastoreConfig {
     pub cache_size_bytes: u64,
@@ -243,14 +248,14 @@ impl Metastore {
                         repo_data.remove(records::record_by_cid_built_key().as_slice())?;
                         Self::migrate_blob_ownership(db, repo_data)?;
                         repo_data.insert(version_key, version_bytes)?;
-                        db.persist(fjall::PersistMode::SyncData)?;
+                        db.persist(METASTORE_PERSIST_MODE)?;
                         Ok(())
                     }
                 }
             }
             None => {
                 repo_data.insert(version_key, version_bytes)?;
-                db.persist(fjall::PersistMode::SyncData)?;
+                db.persist(METASTORE_PERSIST_MODE)?;
                 Ok(())
             }
         }
@@ -427,7 +432,7 @@ impl Metastore {
 
     pub fn persist(&self) -> Result<(), MetastoreError> {
         self.db
-            .persist(fjall::PersistMode::SyncData)
+            .persist(METASTORE_PERSIST_MODE)
             .map_err(MetastoreError::Fjall)
     }
 
diff --git a/justfile b/justfile
index be34371..2faa600 100644
--- a/justfile
+++ b/justfile
@@ -98,7 +98,7 @@ test-store-asan:
 test-unit:
     SQLX_OFFLINE=true cargo test --test dpop_unit --test validation_edge_cases --test scope_edge_cases
 
-store_test := "SQLX_OFFLINE=true TRANQUIL_TEST_BACKEND=store TRANQUIL_PDS_ALLOW_INSECURE_SECRETS=1 DISABLE_RATE_LIMITING=1 TRANQUIL_LEXICON_OFFLINE=1 SKIP_IMPORT_VERIFICATION=true cargo nextest run -E 'not package(tranquil-store) and not binary(store_parity)'"
+store_test := "SQLX_OFFLINE=true TRANQUIL_TEST_BACKEND=store TRANQUIL_PDS_ALLOW_INSECURE_SECRETS=1 DISABLE_RATE_LIMITING=1 TRANQUIL_LEXICON_OFFLINE=1 SKIP_IMPORT_VERIFICATION=true cargo nextest run --features tranquil-store/skip-fsync -E 'not package(tranquil-store) and not binary(store_parity)'"
 
 test-auth:
     {{store_test}} --test oauth --test oauth_lifecycle --test oauth_scopes --test oauth_security --test jwt_security --test session_management --test change_password --test password_reset