Windows & BSOD · critical

How to fix Windows Storage Spaces pool degraded

Error code: STORAGE-SPACES-DEGRADED

What this error means

A Storage Spaces pool is in a degraded state because one or more member drives failed or disconnected. The usual suspects are SATA/USB connection lost and disk firmware bug causing disconnection.

Updated

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Open Storage Spaces in Control Panel and check drive status
  1. Open Storage Spaces in Control Panel and check drive status
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Repair the pool: Repair-VirtualDisk -FriendlyName 'YourVirtualDisk'
  1. Repair the pool: Repair-VirtualDisk -FriendlyName 'YourVirtualDisk'
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Replace the failed drive and re-add to the pool
  1. Replace the failed drive and re-add to the pool
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Physical drive failure in the pool
  • SATA/USB connection lost
  • Disk firmware bug causing disconnection