P9000Watch and P9000Sketch Reference guide for HP StorageWorks P9000 Performance Advisor v5.4 (T1789-96332, April 2012)

RAID group performance metrics
Table 22 describes the RAID group performance metrics.
NOTE:
The RAID group performance metrics of a LDEV is not available if it is configured as a THP, smart
pool, or external volume.
Table 22 RAID group performance metrics
DescriptionUnit
Performance
metrics
RAID group identifiernumberRG
LDEV identifiernumberLDEV
Average Front-end I/OsnumberAvgIO
Average Write percentage%Wr%
Average Sequential I/O percentage%Seq%
Average Read Cache Hit percentage%r_H%
Average I/O sizeKB/IOkB/IO
Average ThroughputKB/sKB/s
Average I/O Response time within back-end arraymsms
Average Read Response timemsr_ms
Average Write Response timemsw_ms
Maximum of (Maximum Read Response time and Maximum
Write Response time)
msms^
Maximum Read Response timemsr_ms^
Maximum Write Response timemsw_ms^
Front-end I/O Density [IOPS/GB]numberFeD
Back-end / Front-end I/O rationumberBe/Fe
Average RAID group I/O utilization%RG%
Back-end I/OnumberBe
Viewing performance metrics in P9000Watch60