Table 23. Active Tier values (continued)
Item Description
● T
he enclosure and disk number (in the form Enclosure Slot, or Enclosure Pack
for DS60 shelves). This does not apply to DDVE instances.
● A device number for a logical device such as those used by DD VTL and vDisk
● A LUN
Disks The disks that comprise the disk pack or LUN. This does not apply to DDVE
instances.
Model The type of disk shelf. This does not apply to DDVE instances.
Disk Count The number of disks in the disk pack or LUN. This does not apply to DDVE
instances.
Disk Size (Size in DDVE) The data storage capacity of the disk.
a
Failed Disks Failed disks in the disk pack or LUN. This does not apply to DDVE instances.
Configured New or existing storage. This does not apply to DDVE instances.
Type SCSI. This only applies to DDVE instances.
a.
T
he 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
T
he 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 24. Addable Storage
Item Description
ID The disk identifier, which can be any of the following.
● T
he enclosure and disk number (in the form Enclosure Slot, or Enclosure Pack
for DS60 shelves)
● A device number for a logical device such as those used by DD VTL and vDisk
● A LUN
Disk Size (Size in DDVE) The data storage capacity of the disk.
a
Type SAS-SSD
a.
T
he 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 25. Cache Tier values
Item Description
ID The disk identifier, which can be any of the following.
● The enclosure and disk number (in the form Enclosure Slot, or Enclosure Pack
for DS60 shelves). This does not apply to DDVE instances.
● A device number for a logical device such as those used by DD VTL and vDisk
● A LUN
Disk Size (Size in DDVE) The data storage capacity of the disk.
a
Type SAS-SSD
Configured New or existing storage.
Configure System for Use 75
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