Hitachi MK-96RD617-08 - Manual (Page 3)

Contents iii
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
Contents
Preface..................................................................................................vii
Overview of Performance Manager ........................................................ 1-1
About Performance Manager Operations ................................................ 2-1
Understanding Statistical Storage Ranges .....................................................2-3
Parity Group Usage Statistics .......................................................................2-4
Volume Usage Statistics ..............................................................................2-5
External Volume Group Usage Statistics........................................................2-5
External Volume Usage Statistics .................................................................2-6
Channel Processor Usage Statistics ..............................................................2-6
Disk Processor Usage Statistics ....................................................................2-6
DRR Processor Usage Statistics....................................................................2-9
Write Pending Rate and Cache Memory Usage Statistics ................................2-9
Access Path Usage Statistics......................................................................2-10
Hard Disk Drive Workload Statistics............................................................2-11
Port Traffic Statistics.................................................................................2-12
LU Paths Traffic Statistics ..........................................................................2-12
Traffic between HBAs and Storage System Ports .........................................2-13
Performance of High-Priority Hosts.............................................................2-13
Upper-Limit Control ..................................................................................2-14
Performance Monitor ................................................................................2-17
Server Priority Manager.............................................................................2-18
Preparing for Performance Manager Operations ...................................... 3-1
Performance Monitor Limitations..................................................................3-3
Export Tool Limitations................................................................................3-5