Live
Name
The name of the pool.
Pages Allocated per Min
The rate, in pages per minute, at which pages are allocated to volumes in the disk group because they need more space to store data.
Pages Deallocated per Min
The rate, in pages per minute, at which pages are deallocated from volumes in the disk group because they no longer need the space to store data.
Pages Unmapped per Minute
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, calculated over the interval since these statistics were last requested or reset.
Read Resp Time
Shown by the
all parameter. Average response time in microseconds for all read operations, calculated over the interval since these statistics were last requested or reset.
Write Resp Time
Shown by the
all parameter. Average response time in microseconds for all write operations, calculated over the interval since these statistics were last requested or reset.
Historical
Shown by the
all parameter. The amount of data read since the last sampling time.
Data Written
Shown by the
all parameter. The amount of data written since the last sampling time.
Total IOPS
The total number of read and write operations per second since the last sampling time.
Read IOPS
Shown by the
all parameter. The number of read operations per second since the last sampling time.
Write IOPS
Shown by the
all parameter. The number of write operations per second since the last sampling time.
Total B/s
The total data transfer rate, in bytes per second, since the last sampling time.
Read B/s
Shown by the
all parameter. The data transfer rate, in bytes per second, for read operations since the last sampling time.
Write B/s
Shown by the
all parameter. The data transfer rate, in bytes per second, for write operations since the last sampling time.
Allocated Pages
The number of 4 MB pages allocated to volumes in the pool.
Sample Time
Date and time, in the format
year-month-day hour:minutes:seconds, when the data sample was taken.
For each tier in the pool:
Pool
The name of the pool.
Tier
The name of the tier.
Total I/Os, Reads, Writes, Data Transferred, Data Read, Data Written, Total IOPS, Read IOPS, Write IOPS, Total B/s, Read B/s, Write B/s
As described for a pool, above.
Allocated Pages
The number of 4 MB pages allocated to volumes in the tier.
Page Moves In
The number of pages moved into this tier from a different tier.
Page Moves Out
The number of pages moved out of this tier to other tiers.
Page Rebalances
The number of pages moved between disks in this tier to automatically load balance.
Initial Allocations
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.)
Unmaps
The number of 4 MB pages that are automatically reclaimed and deallocated because they are empty (they contain only zeroes for data).
RC Copies
The number of 4 MB pages copied from spinning disks to SSD read cache (read flash cache).
Zero-Pages Reclaimed
The number of empty (zero-filled) pages that were reclaimed during this sample period.
Sample Time
Date and time, in the format
year-month-day hour:minutes:seconds, when the data sample was taken.
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