HP Hitachi Dynamic Link Manager Software Licenses - Manual (Page 4)

Automatic Failbacks...............................................................................2-20
Manual Path Switching.................................................................................... 2-21
Path Status Transition..................................................................................... 2-22
The Online Path Status.......................................................................... 2-22
The Offline Path Status.......................................................................... 2-23
Status Transitions of a Path....................................................................2-23
Monitoring Intermittent Errors (Functionality When Automatic Failback Is Used)........2-26
Checking Intermittent Errors............................................................................2-26
Setting Up Intermittent Error Monitoring...........................................................2-26
Intermittent Error Monitoring Actions............................................................... 2-27
When an Intermittent Error Occurs......................................................... 2-27
When an Intermittent Error Does Not Occur............................................ 2-28
When the Conditions for an Intermittent Error Are Changed During Error
Monitoring............................................................................................ 2-28
When a User Changes the Intermittent Error Information.................................. 2-29
Detecting Errors by Using Path Health Checking...................................................... 2-31
Distributing a Load by Using the Dynamic I/O Path Control Function.........................2-31
What is the Dynamic Load Balance Control Function..........................................2-32
Dynamic I/O Path Control Function.................................................................. 2-32
Error Management................................................................................................ 2-32
Types of Collected Logs...................................................................................2-33
Filtering of Error Information........................................................................... 2-35
Collecting Error Information Using the Utility for Collecting HDLM Error Information
(DLMgetras)................................................................................................... 2-36
Utility for Collecting HDLM Installation Error Information (installgetras).............. 2-36
Collecting Audit Log Data.......................................................................................2-36
Categories and Audit Events that HDLM Can Output to the Audit Log................. 2-38
Requirements for Outputting Audit Log Data.....................................................2-43
Destination and Filtering of Audit Log Data....................................................... 2-43
Audit Log Data Formats...................................................................................2-44
Integrated HDLM management using Global Link Manager.......................................2-46
Cluster Support.....................................................................................................2-47
3 Creating an HDLM Environment............................................................. 3-1
HDLM System Requirements....................................................................................3-3
Hosts and OSs Supported by HDLM................................................................... 3-3
Storage Systems Supported by HDLM...............................................................3-17
Storage Systems................................................................................... 3-17
HBA (If an FC-SAN Is Used)................................................................... 3-19
NIC (If an IP-SAN Is Used).....................................................................3-19
When Handling Intermediate Volumes Managed by Hitachi RapidXchange.3-19
Related Products When Using Red Hat Enterprise Linux AS4/ES4....................... 3-20
Cluster Software Supported by HDLM..................................................... 3-20
Volume Managers Supported by HDLM....................................................3-38
File Systems Supported by HDLM........................................................... 3-40
Boot Disk Environments and Hitachi Compute Blade Environments Supported
by HDLM...............................................................................................3-40
Related Products When Using Red Hat Enterprise Linux 5.................................. 3-44
Cluster Software Supported by HDLM (If an FC-SAN Is Used)................... 3-44
Volume Managers Supported by HDLM....................................................3-57
File Systems Supported by HDLM........................................................... 3-59
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Hitachi Dynamic Link Manager (for Linux®) User Guide