P9000Watch and P9000Sketch Reference guide for HP StorageWorks P9000 Performance Advisor v5.3 (T1789-96325, August 2011)

DescriptionUnit
Performance
metrics
Average I/O Response timemsms
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 LDEV I/O utilization%LD%
Back-end I/OnumberBe
RAID group performance metrics
Table 18 describes the RAID group performance metrics.
Table 18 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^
Viewing performance metrics in P9000Watch50