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DescriptionUnit

Performance

metrics

Minimal I/O rate of the last 60 secondsIO/sMinIO

Maximum I/O rate of the last 60 secondsIO/sMaxIO

Average I/O rate of the last 60 secondsIO/sAvgIO

Calculate average I/O size (=avg KB / avgIO)KB/IOKB/IO

Average throughput of the last measurement intervalKB/sCurKb

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 14 describes the LDEV performance metrics.

Table 14 LDEV performance metrics

DescriptionUnit

Performance

metrics

Logical Device namenumberLDEV

RAID Group identifiernumberRG

LDEV spread over number of DKAsnumberDKA

Average Front-end I/OsnumberIOPS

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

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

Viewing performance metrics in XPWatch36

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Hp XP Performance Advisor Software Manual do Utilizador Página 36