CLI Guide

Table 123. tier-hist-statistics properties (continued)
Name Type Description
write-bytes-per-sec-numeric uint64 Unformatted write-bytes-per-second value.
number-of-allocated-pages uint64 The number of 4 MB pages allocated to volumes in the pool.
number-of-page-moves-in uint64 The number of pages moved into this tier from a different tier.
number-of-page-moves-out uint64 The number of pages moved out of this tier to other tiers.
number-of-page-rebalances uint64 The number of pages moved between disks in this tier to automatically load
balance.
number-of-initial-allocations uint64 The number of 4 MB pages that are allocated as a result of host writes. This
number does not include pages allocated as a result of background tiering page
movement. (Tiering moves pages from one tier to another, so one tier will see a
page deallocated, while another tier will show pages allocated. These background
moves are not considered initial allocations.)
number-of-unmaps uint64 The number of 4 MB pages that are automatically reclaimed and deallocated
because they are empty (they contain only zeroes for data).
number-of-rfc-copies uint64 The number of 4 MB pages copied from spinning disks to SSD read cache (read
flash cache).
number-of-zero-pages-
reclaimed
uint64 The number of empty (zero-filled) pages that were reclaimed during this sample
period.
sample-time string Date and time, in the format year-month-day hour:minutes:seconds ,
when the data sample was taken.
sample-time-numeric uint32 Unformatted sample-time value.
tier-statistics
This basetype is used by show tier-statistics and show pool-statistics.
Table 124. tier-statistics properties
Name Type Description
serial-number string The serial number of the tier or 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
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.
412 API basetype properties