Dell EMC PowerProtect DD9900, Руководство по установке

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Table 20 Active Tier values (continued)
a. The DD OS convention for computing disk space defines one gibibyte as 2 30
bytes, giving a
different disk capacity than the manufacturer’s rating.
Configure Cache Tier
The Configure Cache Tier section allows you to configure the Cache Storage Tier devices. The
Cache Tier is where metadata cached with the Metadata on Flash feature resides. To add storage
to the Cache Tier, select one or more devices and add them to the tier. You can add storage
devices up to the capacity licenses installed.
Note: DD6900, DD9400, and DD9900 systems do not require a license for Cache Tier storage.
Table 21 Addable Storage
Item Description
ID The disk identifier, which can be any of the following.
l
The enclosure and disk number (in the form Enclosure
Slot, or Enclosure Pack for DS60 shelves)
l
A device number for a logical device such as those used by
DD VTL and vDisk
l
A LUN
Disk Size (Size in DDVE) The data storage capacity of the disk.
a
Type SAS-SSD
a. The DD OS convention for computing disk space defines one gibibyte as 2 30
bytes, giving a
different disk capacity than the manufacturer’s rating.
Table 22 Cache Tier values
Item Description
ID The disk identifier, which can be any of the following.
l
The enclosure and disk number (in the form Enclosure
Slot, or Enclosure Pack for DS60 shelves). This does not
apply to DDVE instances.
l
A device number for a logical device such as those used by
DD VTL and vDisk
l
A LUN
Disk Size (Size in DDVE) The data storage capacity of the disk.
a
Type SAS-SSD
Configured New or existing storage.
a. The DD OS convention for computing disk space defines one gibibyte as 2 30
bytes, giving a
different disk capacity than the manufacturer’s rating.
Configure Cloud Tier
The Configure Cloud Tier section allows you to configure the Cloud Storage Tier devices. To add
storage to the Cloud Tier, select one or more devices and add them to the tier. You can add
storage devices up to the capacity licenses installed.
Configure System for Use
84 Dell EMC PowerProtect DD9900 System Installation Guide