HP XP P9500 Storage - Manual (Page 4)

Path status transition......................................................................................2-20
The online path status...........................................................................2-20
The offline path status...........................................................................2-20
Correspondence Between Path Statuses Displayed by the OS and by HDLM2-21
Status transitions of a path....................................................................2-21
Monitoring intermittent errors (functionality when automatic failback is used)...........2-24
Checking intermittent errors............................................................................2-24
Setting up intermittent error monitoring...........................................................2-25
Intermittent Error Monitoring Actions...............................................................2-25
When an intermittent error occurs..........................................................2-25
When an intermittent error does not occur..............................................2-26
When the conditions for an intermittent error are changed during error
monitoring............................................................................................2-27
When a User Changes the Intermittent Error Information..................................2-28
Detecting errors by using path health checking.......................................................2-29
Distributing a Load by Using the Dynamic I/O Path Control Function.........................2-30
What is the Dynamic Load Balance Control Function..........................................2-30
Dynamic I/O Path Control Function..................................................................2-30
Error management................................................................................................2-31
Types of Collected Logs...................................................................................2-32
Filtering of error information............................................................................2-33
Collecting error information using the utility for collecting HDLM error information
(DLMgetras)...................................................................................................2-34
Collecting installation error information using the utility for collecting HDLM
installation error information (dlmgetrasinst)....................................................2-34
Collecting Audit Log Data.......................................................................................2-35
Categories and Audit Events that HDLM Can Output to the Audit Log.................2-37
Requirements for Outputting Audit Log Data.....................................................2-40
Destination and Filtering of Audit Log Data.......................................................2-40
Audit Log Data Formats...................................................................................2-41
Integrated HDLM management using Global Link Manager.......................................2-43
Cluster support.....................................................................................................2-44
3 Creating an HDLM Environment.............................................................3-1
HDLM System Requirements....................................................................................3-3
Host and OS Support for HDLM.........................................................................3-3
Storage Systems Supported by HDLM................................................................3-5
Storage Systems.....................................................................................3-5
HBA.......................................................................................................3-6
When Handling Intermediate Volumes Managed by Hitachi RapidXchange...3-6
Cluster Software Supported by HDLM.................................................................3-7
Memory and Disk Capacity Requirements.........................................................3-10
Memory Requirements...........................................................................3-10
Disk Capacity Requirements...................................................................3-10
Number of LUs and Paths That Are Supported in HDLM.....................................3-11
Flow for Creating an HDLM Environment.................................................................3-11
Types of HDLM Installation....................................................................................3-12
Notes on Creating an HDLM Environment...............................................................3-13
Notes on Installing HDLM................................................................................3-13
Notes on an Upgrade Installation or Re-installation of HDLM..............................3-13
Notes on the Virtual I/O Server........................................................................3-14
Notes on a License Key...................................................................................3-15
iv
Hitachi Dynamic Link Manager User Guide for AIX ®