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

DescriptionUnit
Performance
metrics
Minimal throughput of the last 60 secondsKB/sMinKB
Maximum throughput of the last 60 secondsKB/sMaxKB
Average throughput of the last 60 secondsKB/sAvgKB
LDEV performance metrics
Table 21 describes the LDEV performance metrics.
Table 21 LDEV performance metrics
DescriptionUnit
Performance
metrics
Logical Device namenumberLDEV
RAID group identifiernumberRG
LDEV spread over number of DKAsnumberDKA
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 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
P9000Watch and P9000Sketch Reference Guide 59