CLI Guide

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
show unwritable-cache
Description
Shows the percentage of unwritable data in the system. This data has not been written to disk because it is
associated with a volume that no longer exists or whose disks are not online. If the data is needed, the
volume’s disks must be brought online. If the data is not needed it can be cleared, in which case it will be lost
and data will differ between the host and disk.
NOTE: If you are uncertain whether to clear unwritable cache data, contact technical support
for assistance.
Minimum role monitor
Syntax
show unwritable-cache
250 Alphabetical list of commands