CLI Guide

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.
Time Since Reset
The amount of time, in seconds, since these statistics were last reset, either by a user or by a
controller restart.
Reads
The number of read operations since these statistics were last reset or since the controller was
restarted.
Writes
The number of write operations since these statistics were last reset or since the controller was
restarted.
Data Read
The amount of data read since these statistics were last reset or since the controller was restarted.
Data Written
The amount of data written since these statistics were last reset or since the controller was
restarted.
Bps
The data transfer rate, in bytes per second, calculated over the interval since these statistics were
last requested or reset. This value will be zero if it has not been requested or reset since a controller
restart.
IOPS
The number of input/output operations per second, calculated over the interval since these statistics
were last requested or reset. This value will be zero if it has not been requested or reset since a
controller restart.
I/O Resp Time
The average response time, in microseconds, for read and write operations since the last sampling
time.
Read Resp Time
Shown by the all parameter. The average response time, in microseconds, for read operations since
the last sampling time.
Write Resp Time
Shown by the all parameter. The average response time, in microseconds, for write operations since
the last sampling time.
Examples
Show statistics for all tiers.
# show tier-statistics tier all
Show statistics for the Standard tier in pool A.
# show tier-statistics pool A tier standard
Base types
tier-statistics
status
See also
reset all-statistics
show pools
show tiers
256 Alphabetical list of commands