Disk Cache Policy (RAID Settings).
| F.A.Q. • SupportDisk cache policy - Disk Cache Policy
The disk cache policy determines whether the hard disk write cache is enabled or disabled.
- When the Write Policy is set to Write-Thru, the disk cache policy can have a very large impact on write performance.
- When the write policy is set to write-back mode (Write-Back), the impact of the disk cache policy is much smaller and in many cases negligible.
- When the disk cache policy is enabled, there is a risk of losing data in the hard disk cache in the event of a power failure.
- Data loss may be irreversible and may require restoring data from a backup device.
- Protection against power failures is very important.
- UPS with redundant system power supplies is strongly recommended.
- RAID Backup Battery Unit (BBU) can provide additional protection.
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