HP XP P9000 Performance Advisor Software v5.5 User Guide (T1789-96337, Februrary 2013)

Table 40 Metrics and descriptions (continued)
DescriptionMetricMetric category
written sequentially to the
external volume.
The frontend throughput in
MB/s data read sequentially
from the external volume.
Total Sequential Read MB 
Frontend
The frontend throughput in
MB/s data written
Total Sequential Write MB
 Frontend
sequentially to the external
volume.
The amount of cache used
in MB.
Cache Usage MBCache MB Metric
The writes that are held in
cache, yet to be transferred
to the disks.
Cache Writes Pending MB
The size of the P9000
Continuous Access
Cache Sidefile Usage MB
Asynchronous side file usage
in MB.
Single CLPR, data accessed
or the reads on a single
CLPR.
CLPR Read HitsCache IO Metric
Applicable only for XP disk
arrays.
ACP Pair Util TotalUtilization Metrics
• The total utilization of the
ACP pair.
Example  ACP Pair BH has
B as the left ACP card and H
as the right ACP card.
• In a thin provisioning
environment where an
ACP pair is associated
with a ThP pool, the ACP
Pair Util Total metric
provides the ACP
utilization due to the I/O
cache miss (where
frontend I/Os occurring
on a ThP pool are
received at the array
backend). In this case,
ACP utilization also
correlates to the
utilization of RAID groups
associated with a ThP
pool.
The utilization of the MP# on
the ACP pair.
• ACP Pair Util MP0
• ACP Pair Util MP1
• ACP Pair Util MP2
• ACP Pair Util MP3
• ACP Pair Util MP4
• ACP Pair Util MP5
• ACP Pair Util MP6
• ACP Pair Util MP7
The total utilization of the left
ACP in the ACP pair.
ACP Left Util Total
400 Metric Category, metrics, and descriptions