HP StorageWorks P9000 Performance Advisor Software v5.3 User and Troubleshooting Guide (T1789-96322, August 2011)

DescriptionScreen elements
The total frontend throughput in MB/s for the LDEV.LDEV MB/s
The total number of backend tracks transferred to or
from the XP array backend.
Backend Transfer
* is displayed beside the combined backend transfer
value indicates one of the following:
• If any of the physical LDEVs from a RAID group is
configured in multiple ThP pools, the sum of the
backend transfer on all the ThP pools will be shown
as combined backend transfer for that RAID group.
(The backend transfer of each ThP pool is the sum
of backend transfer on V-Vols belonging to that ThP
pool).
• If physical LDEVs from multiple RAID groups are
configured in a ThP pool, the combined backend
transfer will be reported as an aggregate value for
all the RAID groups.
Combined Backed Transfer
The random read utilization percentage for a RAID
group.
% RGUtil Rand Read
The random write utilization percentage for a RAID
group.
% RGUtil Rand Write
% RGUtil Random Write Parity The random write parity
utilization percentage for a RAID group.
% RGUtil Random Write Parity
The sequential read utilization percentage for a RAID
group.
% RGUtil Seq Read
The sequential write utilization percentage for a RAID
group.
% RGUtil SeqWrite
The sequential write parity utilization percentage for
a RAID group.
% RGUtil Seq Write Parity
The overall percentage utilization of a RAID group,
which is the sum of the random reads, random writes,
random write parity, sequential reads, sequential
writes, and the sequential write parity.
Overall % RGUTIL
Viewing port summary
To view the summary of overall utilization of ports for an XP or a P9000 disk array, click Port Summary
in the component selection tree for that XP or P9000 disk array. This feature totals the LDEV I/Os,
LDEV MB/s, cache fast write, disk fast write, cache bypass, and backend transfer values for all of
the LDEVs on a given port.
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