A SQL Server database entering “Recovery Pending” after RAID failure usually indicates SQL can no longer safely access required database structures.
This commonly occurs after:
- degraded RAID arrays
- rebuild attempts
- dropped RAID members
- controller failures
- parity inconsistency
- missing transaction logs
- corrupted MDF pages
The database may still physically exist, but SQL Server no longer trusts the integrity of the storage subsystem beneath it.
Recovery Pending is often a symptom of underlying RAID instability — not simply a SQL software issue.
Related recovery resources:
- Recover Corrupt MDF Files After RAID Failure
https://www.adrdatarecovery.com/sql-database-recovery-from-failed-raid-systems/recover-corrupt-mdf-files-after-raid-failure/ - SQL Database Recovery from Failed RAID Systems
https://www.adrdatarecovery.com/sql-database-recovery-from-failed-raid-systems/ - RAID 5 Recovery
https://www.adrdatarecovery.com/raid-5-recovery/
What Causes Recovery Pending After RAID Failure
Common causes include:
- damaged transaction logs
- unreadable sectors
- dropped RAID members
- unstable RAID rebuilds
- parity corruption
- failed controller cache writes
- mismatched virtual disk metadata
Even temporary drive instability during rebuilds may corrupt SQL write ordering.
Why Rebuilds Often Trigger Recovery Pending
Many SQL databases enter Recovery Pending immediately AFTER a rebuild completes.
Why?
Because rebuild operations may successfully reconstruct parity mathematically while still reconstructing corrupted SQL data structurally.
This distinction is critical.
The RAID may appear healthy while SQL consistency has already been compromised.
Reference:
- TN-SQL-002: Why Rebuild Attempts Often Damage Recoverable SQL Data
https://www.adrdatarecovery.com/sql-database-recovery-from-failed-raid-systems/tn-sql-002-why-rebuild-attempts-often-damage-recoverable-sql-data/