Installing disk drives
Depending on the types of disk drives being used, the following number of drives can be installed in a
single enclosure:
• LFF: 12 drives
• SFF: 25 drives
CAUTION:
To prevent improper cooling and thermal damage, operate the enclosure only when all bays are
populated with either a component or a drive blank.
Disk drive installation guidelines
When adding disk drives to the storage system, observe the following guidelines:
• Insert disks contiguously within the enclosure.
• Install SSD drives into the array enclosure. Do not put SSD drives into the expansion disk enclosure.
• When installing expansion disks, use the same pattern as the original disk sets in either the existing
chassis or in the new chassis.
Tiering guidelines
• Tier 0—First writes. If SSDs are being used, put them here.
• Tier 1—If Adaptive Optimization (AO) is on, data is moved here.
• Tier 2—(Not operational.)
Installing disk drives
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