diff --git a/cmd/lotus-miner/init.go b/cmd/lotus-miner/init.go
index c109e85b980..1b76960e999 100644
--- a/cmd/lotus-miner/init.go
+++ b/cmd/lotus-miner/init.go
@@ -463,7 +463,7 @@ func storageMinerInit(ctx context.Context, cctx *cli.Context, api v1api.FullNode
 			wsts := statestore.New(namespace.Wrap(mds, modules.WorkerCallsPrefix))
 			smsts := statestore.New(namespace.Wrap(mds, modules.ManagerWorkPrefix))
 
-			si := paths.NewIndex(nil)
+			si := paths.NewMemIndex(nil)
 
 			lstor, err := paths.NewLocal(ctx, lr, si, nil)
 			if err != nil {
diff --git a/cmd/lotus-provider/run.go b/cmd/lotus-provider/run.go
index 779345dff54..efe6cd96164 100644
--- a/cmd/lotus-provider/run.go
+++ b/cmd/lotus-provider/run.go
@@ -269,7 +269,7 @@ type Deps struct {
 	as         *ctladdr.AddressSelector
 	maddrs     []dtypes.MinerAddress
 	stor       *paths.Remote
-	si         *paths.IndexProxy
+	si         *paths.DBIndex
 	localStore *paths.Local
 	listenAddr string
 }
@@ -348,7 +348,7 @@ Get it with: jq .PrivateKey ~/.lotus-miner/keystore/MF2XI2BNNJ3XILLQOJUXMYLUMU`,
 	}
 
 	al := alerting.NewAlertingSystem(j)
-	si := paths.NewIndexProxy(al, db, true)
+	si := paths.NewDBIndex(al, db)
 	bls := &paths.BasicLocalStorage{
 		PathToJSON: cctx.String("storage-json"),
 	}
diff --git a/itests/harmonydb_test.go b/itests/harmonydb_test.go
index 7c0c22d888d..8b1b6123431 100644
--- a/itests/harmonydb_test.go
+++ b/itests/harmonydb_test.go
@@ -16,6 +16,7 @@ func withSetup(t *testing.T, f func(*kit.TestMiner)) {
 	_, miner, _ := kit.EnsembleMinimal(t,
 		kit.LatestActorsAt(-1),
 		kit.MockProofs(),
+		kit.WithSectorIndexDB(),
 	)
 
 	f(miner)
diff --git a/itests/harmonytask_test.go b/itests/harmonytask_test.go
index d588a2490e9..ab54cbef42f 100644
--- a/itests/harmonytask_test.go
+++ b/itests/harmonytask_test.go
@@ -30,6 +30,7 @@ func withDbSetup(t *testing.T, f func(*kit.TestMiner)) {
 	_, miner, _ := kit.EnsembleMinimal(t,
 		kit.LatestActorsAt(-1),
 		kit.MockProofs(),
+		kit.WithSectorIndexDB(),
 	)
 	logging.SetLogLevel("harmonytask", "debug")
 
diff --git a/itests/kit/ensemble.go b/itests/kit/ensemble.go
index daca6d2d4e5..3c83ba8962c 100644
--- a/itests/kit/ensemble.go
+++ b/itests/kit/ensemble.go
@@ -607,6 +607,7 @@ func (n *Ensemble) Start() *Ensemble {
 		cfg.Subsystems.EnableMining = m.options.subsystems.Has(SMining)
 		cfg.Subsystems.EnableSealing = m.options.subsystems.Has(SSealing)
 		cfg.Subsystems.EnableSectorStorage = m.options.subsystems.Has(SSectorStorage)
+		cfg.Subsystems.EnableSectorIndexDB = m.options.subsystems.Has(SHarmony)
 		cfg.Dealmaking.MaxStagingDealsBytes = m.options.maxStagingDealsBytes
 
 		if m.options.mainMiner != nil {
@@ -787,7 +788,9 @@ func (n *Ensemble) Start() *Ensemble {
 		n.t.Cleanup(func() { _ = stop(context.Background()) })
 		mCopy := m
 		n.t.Cleanup(func() {
-			mCopy.BaseAPI.(*impl.StorageMinerAPI).HarmonyDB.ITestDeleteAll()
+			if mCopy.BaseAPI.(*impl.StorageMinerAPI).HarmonyDB != nil {
+				mCopy.BaseAPI.(*impl.StorageMinerAPI).HarmonyDB.ITestDeleteAll()
+			}
 		})
 
 		m.BaseAPI = m.StorageMiner
diff --git a/itests/kit/node_miner.go b/itests/kit/node_miner.go
index 4b81c9df0bd..ee2ee3eaae2 100644
--- a/itests/kit/node_miner.go
+++ b/itests/kit/node_miner.go
@@ -37,6 +37,8 @@ const (
 	SSealing
 	SSectorStorage
 
+	SHarmony
+
 	MinerSubsystems = iota
 )
 
diff --git a/itests/kit/node_opts.go b/itests/kit/node_opts.go
index 6469c0a3076..9af284148c4 100644
--- a/itests/kit/node_opts.go
+++ b/itests/kit/node_opts.go
@@ -89,6 +89,13 @@ func WithAllSubsystems() NodeOpt {
 	}
 }
 
+func WithSectorIndexDB() NodeOpt {
+	return func(opts *nodeOpts) error {
+		opts.subsystems = opts.subsystems.Add(SHarmony)
+		return nil
+	}
+}
+
 func WithSubsystems(systems ...MinerSubsystem) NodeOpt {
 	return func(opts *nodeOpts) error {
 		for _, s := range systems {
diff --git a/node/builder_miner.go b/node/builder_miner.go
index dd35c6becf9..08c71ba1976 100644
--- a/node/builder_miner.go
+++ b/node/builder_miner.go
@@ -104,9 +104,6 @@ func ConfigStorageMiner(c interface{}) Option {
 			If(cfg.Subsystems.EnableSectorStorage, Error(xerrors.Errorf("sealing can only be enabled on a mining node"))),
 		),
 
-		Override(new(*harmonydb.DB), func(cfg config.HarmonyDB, id harmonydb.ITestID) (*harmonydb.DB, error) {
-			return harmonydb.NewFromConfigWithITestID(cfg)(id)
-		}),
 		If(cfg.Subsystems.EnableMining,
 			If(!cfg.Subsystems.EnableSealing, Error(xerrors.Errorf("sealing can't be disabled on a mining node yet"))),
 			If(!cfg.Subsystems.EnableSectorStorage, Error(xerrors.Errorf("sealing can't be disabled on a mining node yet"))),
@@ -136,8 +133,20 @@ func ConfigStorageMiner(c interface{}) Option {
 
 		If(cfg.Subsystems.EnableSectorStorage,
 			// Sector storage
-			Override(new(*paths.IndexProxy), paths.NewIndexProxyHelper(cfg.Subsystems.EnableSectorIndexDB)),
-			Override(new(paths.SectorIndex), From(new(*paths.IndexProxy))),
+			If(cfg.Subsystems.EnableSectorIndexDB,
+				Override(new(*paths.DBIndex), paths.NewDBIndex),
+				Override(new(paths.SectorIndex), From(new(*paths.DBIndex))),
+
+				// sector index db is the only thing on lotus-miner that will use harmonydb
+				Override(new(*harmonydb.DB), func(cfg config.HarmonyDB, id harmonydb.ITestID) (*harmonydb.DB, error) {
+					return harmonydb.NewFromConfigWithITestID(cfg)(id)
+				}),
+			),
+			If(!cfg.Subsystems.EnableSectorIndexDB,
+				Override(new(*paths.MemIndex), paths.NewMemIndex),
+				Override(new(paths.SectorIndex), From(new(*paths.MemIndex))),
+			),
+
 			Override(new(*sectorstorage.Manager), modules.SectorStorage),
 			Override(new(sectorstorage.Unsealer), From(new(*sectorstorage.Manager))),
 			Override(new(sectorstorage.SectorManager), From(new(*sectorstorage.Manager))),
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index b675772cf39..2ce42c32715 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -124,7 +124,7 @@ type StorageMinerAPI struct {
 	GetExpectedSealDurationFunc                 dtypes.GetExpectedSealDurationFunc                 `optional:"true"`
 	SetExpectedSealDurationFunc                 dtypes.SetExpectedSealDurationFunc                 `optional:"true"`
 
-	HarmonyDB *harmonydb.DB
+	HarmonyDB *harmonydb.DB `optional:"true"`
 }
 
 var _ api.StorageMiner = &StorageMinerAPI{}
diff --git a/storage/paths/index.go b/storage/paths/index.go
index bc26bddb420..49ee11e0960 100644
--- a/storage/paths/index.go
+++ b/storage/paths/index.go
@@ -61,7 +61,7 @@ type storageEntry struct {
 	heartbeatErr  error
 }
 
-type Index struct {
+type MemIndex struct {
 	*indexLocks
 	lk sync.RWMutex
 
@@ -73,8 +73,8 @@ type Index struct {
 	stores  map[storiface.ID]*storageEntry
 }
 
-func NewIndex(al *alerting.Alerting) *Index {
-	return &Index{
+func NewMemIndex(al *alerting.Alerting) *MemIndex {
+	return &MemIndex{
 		indexLocks: &indexLocks{
 			locks: map[abi.SectorID]*sectorLock{},
 		},
@@ -87,7 +87,7 @@ func NewIndex(al *alerting.Alerting) *Index {
 	}
 }
 
-func (i *Index) StorageList(ctx context.Context) (map[storiface.ID][]storiface.Decl, error) {
+func (i *MemIndex) StorageList(ctx context.Context) (map[storiface.ID][]storiface.Decl, error) {
 	i.lk.RLock()
 	defer i.lk.RUnlock()
 
@@ -116,7 +116,7 @@ func (i *Index) StorageList(ctx context.Context) (map[storiface.ID][]storiface.D
 	return out, nil
 }
 
-func (i *Index) StorageAttach(ctx context.Context, si storiface.StorageInfo, st fsutil.FsStat) error {
+func (i *MemIndex) StorageAttach(ctx context.Context, si storiface.StorageInfo, st fsutil.FsStat) error {
 	var allow, deny = make([]string, 0, len(si.AllowTypes)), make([]string, 0, len(si.DenyTypes))
 
 	if _, hasAlert := i.pathAlerts[si.ID]; i.alerting != nil && !hasAlert {
@@ -219,7 +219,7 @@ func (i *Index) StorageAttach(ctx context.Context, si storiface.StorageInfo, st
 	return nil
 }
 
-func (i *Index) StorageDetach(ctx context.Context, id storiface.ID, url string) error {
+func (i *MemIndex) StorageDetach(ctx context.Context, id storiface.ID, url string) error {
 	i.lk.Lock()
 	defer i.lk.Unlock()
 
@@ -307,7 +307,7 @@ func (i *Index) StorageDetach(ctx context.Context, id storiface.ID, url string)
 	return nil
 }
 
-func (i *Index) StorageReportHealth(ctx context.Context, id storiface.ID, report storiface.HealthReport) error {
+func (i *MemIndex) StorageReportHealth(ctx context.Context, id storiface.ID, report storiface.HealthReport) error {
 	i.lk.Lock()
 	defer i.lk.Unlock()
 
@@ -350,7 +350,7 @@ func (i *Index) StorageReportHealth(ctx context.Context, id storiface.ID, report
 	return nil
 }
 
-func (i *Index) StorageDeclareSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType, primary bool) error {
+func (i *MemIndex) StorageDeclareSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType, primary bool) error {
 	i.lk.Lock()
 	defer i.lk.Unlock()
 
@@ -382,7 +382,7 @@ loop:
 	return nil
 }
 
-func (i *Index) StorageDropSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType) error {
+func (i *MemIndex) StorageDropSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType) error {
 	i.lk.Lock()
 	defer i.lk.Unlock()
 
@@ -416,7 +416,7 @@ func (i *Index) StorageDropSector(ctx context.Context, storageID storiface.ID, s
 	return nil
 }
 
-func (i *Index) StorageFindSector(ctx context.Context, s abi.SectorID, ft storiface.SectorFileType, ssize abi.SectorSize, allowFetch bool) ([]storiface.SectorStorageInfo, error) {
+func (i *MemIndex) StorageFindSector(ctx context.Context, s abi.SectorID, ft storiface.SectorFileType, ssize abi.SectorSize, allowFetch bool) ([]storiface.SectorStorageInfo, error) {
 	i.lk.RLock()
 	defer i.lk.RUnlock()
 
@@ -564,7 +564,7 @@ func (i *Index) StorageFindSector(ctx context.Context, s abi.SectorID, ft storif
 	return out, nil
 }
 
-func (i *Index) StorageInfo(ctx context.Context, id storiface.ID) (storiface.StorageInfo, error) {
+func (i *MemIndex) StorageInfo(ctx context.Context, id storiface.ID) (storiface.StorageInfo, error) {
 	i.lk.RLock()
 	defer i.lk.RUnlock()
 
@@ -576,7 +576,7 @@ func (i *Index) StorageInfo(ctx context.Context, id storiface.ID) (storiface.Sto
 	return *si.info, nil
 }
 
-func (i *Index) StorageBestAlloc(ctx context.Context, allocate storiface.SectorFileType, ssize abi.SectorSize, pathType storiface.PathType) ([]storiface.StorageInfo, error) {
+func (i *MemIndex) StorageBestAlloc(ctx context.Context, allocate storiface.SectorFileType, ssize abi.SectorSize, pathType storiface.PathType) ([]storiface.StorageInfo, error) {
 	i.lk.RLock()
 	defer i.lk.RUnlock()
 
@@ -641,7 +641,7 @@ func (i *Index) StorageBestAlloc(ctx context.Context, allocate storiface.SectorF
 	return out, nil
 }
 
-func (i *Index) FindSector(id abi.SectorID, typ storiface.SectorFileType) ([]storiface.ID, error) {
+func (i *MemIndex) FindSector(id abi.SectorID, typ storiface.SectorFileType) ([]storiface.ID, error) {
 	i.lk.RLock()
 	defer i.lk.RUnlock()
 
@@ -660,4 +660,4 @@ func (i *Index) FindSector(id abi.SectorID, typ storiface.SectorFileType) ([]sto
 	return out, nil
 }
 
-var _ SectorIndex = &Index{}
+var _ SectorIndex = &MemIndex{}
diff --git a/storage/paths/index_proxy.go b/storage/paths/index_proxy.go
deleted file mode 100644
index 06097b665ce..00000000000
--- a/storage/paths/index_proxy.go
+++ /dev/null
@@ -1,118 +0,0 @@
-package paths
-
-import (
-	"context"
-
-	"github.com/filecoin-project/go-state-types/abi"
-
-	"github.com/filecoin-project/lotus/journal/alerting"
-	"github.com/filecoin-project/lotus/lib/harmony/harmonydb"
-	"github.com/filecoin-project/lotus/storage/sealer/fsutil"
-	"github.com/filecoin-project/lotus/storage/sealer/storiface"
-)
-
-type IndexProxy struct {
-	memIndex            *Index
-	dbIndex             *DBIndex
-	enableSectorIndexDB bool
-}
-
-func NewIndexProxyHelper(enableSectorIndexDB bool) func(al *alerting.Alerting, db *harmonydb.DB) *IndexProxy {
-	return func(al *alerting.Alerting, db *harmonydb.DB) *IndexProxy {
-		return NewIndexProxy(al, db, enableSectorIndexDB)
-	}
-}
-
-func NewIndexProxy(al *alerting.Alerting, db *harmonydb.DB, enableSectorIndexDB bool) *IndexProxy {
-	return &IndexProxy{
-		memIndex:            NewIndex(al),
-		dbIndex:             NewDBIndex(al, db),
-		enableSectorIndexDB: enableSectorIndexDB,
-	}
-}
-
-func (ip *IndexProxy) StorageAttach(ctx context.Context, info storiface.StorageInfo, stat fsutil.FsStat) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageAttach(ctx, info, stat)
-	}
-	return ip.memIndex.StorageAttach(ctx, info, stat)
-}
-
-func (ip *IndexProxy) StorageDetach(ctx context.Context, id storiface.ID, url string) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageDetach(ctx, id, url)
-	}
-	return ip.memIndex.StorageDetach(ctx, id, url)
-}
-
-func (ip *IndexProxy) StorageInfo(ctx context.Context, id storiface.ID) (storiface.StorageInfo, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageInfo(ctx, id)
-	}
-	return ip.memIndex.StorageInfo(ctx, id)
-}
-
-func (ip *IndexProxy) StorageReportHealth(ctx context.Context, id storiface.ID, report storiface.HealthReport) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageReportHealth(ctx, id, report)
-	}
-	return ip.memIndex.StorageReportHealth(ctx, id, report)
-}
-
-func (ip *IndexProxy) StorageDeclareSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType, primary bool) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageDeclareSector(ctx, storageID, s, ft, primary)
-	}
-	return ip.memIndex.StorageDeclareSector(ctx, storageID, s, ft, primary)
-}
-
-func (ip *IndexProxy) StorageDropSector(ctx context.Context, storageID storiface.ID, s abi.SectorID, ft storiface.SectorFileType) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageDropSector(ctx, storageID, s, ft)
-	}
-	return ip.memIndex.StorageDropSector(ctx, storageID, s, ft)
-}
-
-func (ip *IndexProxy) StorageFindSector(ctx context.Context, sector abi.SectorID, ft storiface.SectorFileType, ssize abi.SectorSize, allowFetch bool) ([]storiface.SectorStorageInfo, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageFindSector(ctx, sector, ft, ssize, allowFetch)
-	}
-	return ip.memIndex.StorageFindSector(ctx, sector, ft, ssize, allowFetch)
-}
-
-func (ip *IndexProxy) StorageBestAlloc(ctx context.Context, allocate storiface.SectorFileType, ssize abi.SectorSize, pathType storiface.PathType) ([]storiface.StorageInfo, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageBestAlloc(ctx, allocate, ssize, pathType)
-	}
-	return ip.memIndex.StorageBestAlloc(ctx, allocate, ssize, pathType)
-}
-
-func (ip *IndexProxy) StorageLock(ctx context.Context, sector abi.SectorID, read storiface.SectorFileType, write storiface.SectorFileType) error {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageLock(ctx, sector, read, write)
-	}
-	return ip.memIndex.StorageLock(ctx, sector, read, write)
-}
-
-func (ip *IndexProxy) StorageTryLock(ctx context.Context, sector abi.SectorID, read storiface.SectorFileType, write storiface.SectorFileType) (bool, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageTryLock(ctx, sector, read, write)
-	}
-	return ip.memIndex.StorageTryLock(ctx, sector, read, write)
-}
-
-func (ip *IndexProxy) StorageGetLocks(ctx context.Context) (storiface.SectorLocks, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageGetLocks(ctx)
-	}
-	return ip.memIndex.StorageGetLocks(ctx)
-}
-
-func (ip *IndexProxy) StorageList(ctx context.Context) (map[storiface.ID][]storiface.Decl, error) {
-	if ip.enableSectorIndexDB {
-		return ip.dbIndex.StorageList(ctx)
-	}
-	return ip.memIndex.StorageList(ctx)
-}
-
-var _ SectorIndex = &IndexProxy{}
diff --git a/storage/paths/index_test.go b/storage/paths/index_test.go
index 9a241da23e0..96e17ce7db0 100644
--- a/storage/paths/index_test.go
+++ b/storage/paths/index_test.go
@@ -42,7 +42,7 @@ const s32g = 32 << 30
 func TestFindSimple(t *testing.T) {
 	ctx := context.Background()
 
-	i := NewIndex(nil)
+	i := NewMemIndex(nil)
 	stor1 := newTestStorage()
 	stor2 := newTestStorage()
 
@@ -79,7 +79,7 @@ func TestFindSimple(t *testing.T) {
 func TestFindNoAllow(t *testing.T) {
 	ctx := context.Background()
 
-	i := NewIndex(nil)
+	i := NewMemIndex(nil)
 	stor1 := newTestStorage()
 	stor1.AllowTo = []storiface.Group{"grp1"}
 	stor2 := newTestStorage()
@@ -111,7 +111,7 @@ func TestFindNoAllow(t *testing.T) {
 func TestFindAllow(t *testing.T) {
 	ctx := context.Background()
 
-	i := NewIndex(nil)
+	i := NewMemIndex(nil)
 
 	stor1 := newTestStorage()
 	stor1.AllowTo = []storiface.Group{"grp1"}
diff --git a/storage/paths/local_test.go b/storage/paths/local_test.go
index bfa138ff6f3..4bc2642dc2d 100644
--- a/storage/paths/local_test.go
+++ b/storage/paths/local_test.go
@@ -80,7 +80,7 @@ func TestLocalStorage(t *testing.T) {
 		root: root,
 	}
 
-	index := NewIndex(nil)
+	index := NewMemIndex(nil)
 
 	st, err := NewLocal(ctx, tstor, index, nil)
 	require.NoError(t, err)
diff --git a/storage/paths/remote_test.go b/storage/paths/remote_test.go
index e3376e6fa10..7aea637296c 100644
--- a/storage/paths/remote_test.go
+++ b/storage/paths/remote_test.go
@@ -59,7 +59,7 @@ func createTestStorage(t *testing.T, p string, seal bool, att ...*paths.Local) s
 func TestMoveShared(t *testing.T) {
 	logging.SetAllLoggers(logging.LevelDebug)
 
-	index := paths.NewIndex(nil)
+	index := paths.NewMemIndex(nil)
 
 	ctx := context.Background()
 
diff --git a/storage/sealer/manager_test.go b/storage/sealer/manager_test.go
index 7c3e1a1f2b1..d76424d5ea4 100644
--- a/storage/sealer/manager_test.go
+++ b/storage/sealer/manager_test.go
@@ -100,10 +100,10 @@ func (t *testStorage) Stat(path string) (fsutil.FsStat, error) {
 
 var _ paths.LocalStorage = &testStorage{}
 
-func newTestMgr(ctx context.Context, t *testing.T, ds datastore.Datastore) (*Manager, *paths.Local, *paths.Remote, *paths.Index, func()) {
+func newTestMgr(ctx context.Context, t *testing.T, ds datastore.Datastore) (*Manager, *paths.Local, *paths.Remote, *paths.MemIndex, func()) {
 	st := newTestStorage(t)
 
-	si := paths.NewIndex(nil)
+	si := paths.NewMemIndex(nil)
 
 	lstor, err := paths.NewLocal(ctx, st, si, nil)
 	require.NoError(t, err)
diff --git a/storage/sealer/piece_provider_test.go b/storage/sealer/piece_provider_test.go
index de1e07a7849..a8c243379f3 100644
--- a/storage/sealer/piece_provider_test.go
+++ b/storage/sealer/piece_provider_test.go
@@ -180,7 +180,7 @@ func TestReadPieceRemoteWorkers(t *testing.T) {
 
 type pieceProviderTestHarness struct {
 	ctx         context.Context
-	index       *paths.Index
+	index       *paths.MemIndex
 	pp          PieceProvider
 	sector      storiface.SectorRef
 	mgr         *Manager
@@ -210,7 +210,7 @@ func newPieceProviderTestHarness(t *testing.T, mgrConfig config.SealerConfig, se
 	require.NoError(t, err)
 
 	// create index, storage, local store & remote store.
-	index := paths.NewIndex(nil)
+	index := paths.NewMemIndex(nil)
 	storage := newTestStorage(t)
 	localStore, err := paths.NewLocal(ctx, storage, index, []string{"http://" + nl.Addr().String() + "/remote"})
 	require.NoError(t, err)
diff --git a/storage/sealer/sched_test.go b/storage/sealer/sched_test.go
index 2e2b05ab2c3..03e947b8a54 100644
--- a/storage/sealer/sched_test.go
+++ b/storage/sealer/sched_test.go
@@ -187,7 +187,7 @@ func (s *schedTestWorker) Close() error {
 
 var _ Worker = &schedTestWorker{}
 
-func addTestWorker(t *testing.T, sched *Scheduler, index *paths.Index, name string, taskTypes map[sealtasks.TaskType]struct{}, resources storiface.WorkerResources, ignoreResources bool) {
+func addTestWorker(t *testing.T, sched *Scheduler, index *paths.MemIndex, name string, taskTypes map[sealtasks.TaskType]struct{}, resources storiface.WorkerResources, ignoreResources bool) {
 	w := &schedTestWorker{
 		name:      name,
 		taskTypes: taskTypes,
@@ -231,7 +231,7 @@ func TestSchedStartStop(t *testing.T) {
 	require.NoError(t, err)
 	go sched.runSched()
 
-	addTestWorker(t, sched, paths.NewIndex(nil), "fred", nil, decentWorkerResources, false)
+	addTestWorker(t, sched, paths.NewMemIndex(nil), "fred", nil, decentWorkerResources, false)
 
 	require.NoError(t, sched.Close(context.TODO()))
 }
@@ -264,13 +264,13 @@ func TestSched(t *testing.T) {
 		wg sync.WaitGroup
 	}
 
-	type task func(*testing.T, *Scheduler, *paths.Index, *runMeta)
+	type task func(*testing.T, *Scheduler, *paths.MemIndex, *runMeta)
 
 	sched := func(taskName, expectWorker string, sid abi.SectorNumber, taskType sealtasks.TaskType) task {
 		_, _, l, _ := runtime.Caller(1)
 		_, _, l2, _ := runtime.Caller(2)
 
-		return func(t *testing.T, sched *Scheduler, index *paths.Index, rm *runMeta) {
+		return func(t *testing.T, sched *Scheduler, index *paths.MemIndex, rm *runMeta) {
 			done := make(chan struct{})
 			rm.done[taskName] = done
 
@@ -324,7 +324,7 @@ func TestSched(t *testing.T) {
 	taskStarted := func(name string) task {
 		_, _, l, _ := runtime.Caller(1)
 		_, _, l2, _ := runtime.Caller(2)
-		return func(t *testing.T, sched *Scheduler, index *paths.Index, rm *runMeta) {
+		return func(t *testing.T, sched *Scheduler, index *paths.MemIndex, rm *runMeta) {
 			select {
 			case rm.done[name] <- struct{}{}:
 			case <-ctx.Done():
@@ -336,7 +336,7 @@ func TestSched(t *testing.T) {
 	taskDone := func(name string) task {
 		_, _, l, _ := runtime.Caller(1)
 		_, _, l2, _ := runtime.Caller(2)
-		return func(t *testing.T, sched *Scheduler, index *paths.Index, rm *runMeta) {
+		return func(t *testing.T, sched *Scheduler, index *paths.MemIndex, rm *runMeta) {
 			select {
 			case rm.done[name] <- struct{}{}:
 			case <-ctx.Done():
@@ -349,7 +349,7 @@ func TestSched(t *testing.T) {
 	taskNotScheduled := func(name string) task {
 		_, _, l, _ := runtime.Caller(1)
 		_, _, l2, _ := runtime.Caller(2)
-		return func(t *testing.T, sched *Scheduler, index *paths.Index, rm *runMeta) {
+		return func(t *testing.T, sched *Scheduler, index *paths.MemIndex, rm *runMeta) {
 			select {
 			case rm.done[name] <- struct{}{}:
 				t.Fatal("not expected", l, l2)
@@ -360,7 +360,7 @@ func TestSched(t *testing.T) {
 
 	testFunc := func(workers []workerSpec, tasks []task) func(t *testing.T) {
 		return func(t *testing.T) {
-			index := paths.NewIndex(nil)
+			index := paths.NewMemIndex(nil)
 
 			sched, err := newScheduler(ctx, "")
 			require.NoError(t, err)
@@ -389,7 +389,7 @@ func TestSched(t *testing.T) {
 	}
 
 	multTask := func(tasks ...task) task {
-		return func(t *testing.T, s *Scheduler, index *paths.Index, meta *runMeta) {
+		return func(t *testing.T, s *Scheduler, index *paths.MemIndex, meta *runMeta) {
 			for _, tsk := range tasks {
 				tsk(t, s, index, meta)
 			}
@@ -503,7 +503,7 @@ func TestSched(t *testing.T) {
 	}
 
 	diag := func() task {
-		return func(t *testing.T, s *Scheduler, index *paths.Index, meta *runMeta) {
+		return func(t *testing.T, s *Scheduler, index *paths.MemIndex, meta *runMeta) {
 			time.Sleep(20 * time.Millisecond)
 			for _, request := range s.diag().Requests {
 				log.Infof("!!! sDIAG: sid(%d) task(%s)", request.Sector.Number, request.TaskType)