CLI Guide

Table 124. tier-statistics properties (continued)
Name Type Description
pages-reclaimed uint32 The number of 4 MB pages that have been automatically reclaimed and
deallocated because they are empty (they contain only zeroes for data).
num-pages-unmap-per-
minute
uint32 The number of 4 MB pages that host systems have unmapped per minute,
through use of the SCSI UNMAP command, to free storage space as a result
of deleting files or formatting volumes on the host.
resettable-statistics Embedded; see resettable-statistics on page 386.
tier-summary
This basetype is used by show pool-statistics when the historical parameter is specified.
Table 125. tier-summary properties
Name Type Description
serial-number string The serial number of the pool.
pool string The name of the pool.
tier string
● Archive: The lowest storage tier, which uses midline spinning SAS disks
(<10k RPM, high capacity).
● Performance : The highest storage tier, which uses SSDs (high speed).
● Read Cache: The tier that provides read cache for a storage pool.
● Standard: The tier that uses enterprise-class spinning SAS disks (10k/15k
RPM, higher capacity).
tier-numeric uint32 Numeric equivalents for tier values.
● 0: N/A
● 1: Performance
● 2: Standard
● 4: Archive
● 8: Read Cache
tier-hist-statistics Embedded; see tier-hist-statistics on page 411.
readcache-hist-statistics Embedded; see readcache-hist-statistics on page 380
tiers
This basetype is used by show pools and show tiers.
Table 126. tiers properties
Name Type Description
serial-number string The serial number of the tier.
pool string The name of the pool.
tier string
● Archive: The lowest storage tier, which uses midline spinning SAS
disks (<10k RPM, high capacity).
● Performance: The highest storage tier, which uses SSDs (high
speed).
● Read Cache: The tier that provides read cache for a storage pool.
● Standard: The tier that uses enterprise-class spinning SAS disks
(10k/15k RPM, higher capacity).
API basetype properties 413