CLI Guide

Table 125. tier-statistics properties (continued)
Name Type Description
• 8: Read Cache
pages-alloc-per-minute uint32 The rate, in pages per minute, at which pages are allocated to volumes in the pool
because they need more space to store data.
pages-dealloc-per-minute uint32 The rate, in pages per minute, at which pages are deallocated from volumes in the pool
because they no longer need the space to store data.
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 383.
tier-summary
This basetype is used by show pool-statistics when the historical parameter is specified.
Table 126. 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 408.
readcache-hist-statistics Embedded; see readcache-hist-statistics on page 377
tiers
This basetype is used by show pools and show tiers.
Table 127. tiers properties
Name Type Description
serial-number string The serial number of the tier.
pool string The name of the pool.
410 API basetype properties