- Ceph Cookbook（Second Edition）
- Vikhyat Umrao Michael Hackett Karan Singh
- 73字
- 2021-07-02 23:19:04
RAID spare disks increases TCO
The RAID system requires a few disks as hot spare disks. These are just free disks that will be used only when a disk fails; else, they will not be used for data storage. This adds extra cost to the system and increases TCO. Moreover, if you're running short of spare disks and immediately a disk fails in the RAID group, then you will face a severe problem.
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