Dell Compellent Series 30 - Manual (Page 123)

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Viewing Tiers
Viewing Tiers
Disks are originally configured when a system is set up. In most systems, all disks form one
pool of storage in a managed disk folder. By default, the managed disk folder is named
Assigned. Disks of different classifications, such as 15K, 10K, or FATA are all part of the
managed disk folder.
Storage Center assigns disks of different classifications to one of three tiers. Tier 1 is the
highest performance tier; Tier 3 is the most cost efficient tier.

To view disk tiers
1 From the system tree, select the managed disk folder. Disk tiers appear.
Figure 88. Disk Tiers
Storage Center automatically migrates old data to lower tiers.