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StorView RAID Module
14.4 Clearing the StorView Event Log ............................................................................................ 149
14.5 Operating System Event Log .................................................................................................. 150
14.6 List of Events ........................................................................................................................... 151
14.6.1
Controller Events ........................................................................................................... 151
14.6.2
Expansion Module Events ............................................................................................. 157
14.6.3
Alarm Events .................................................................................................................. 158
14.6.4
Drive and Array Events .................................................................................................. 159
14.6.5
Controller Port Events .................................................................................................... 164
14.6.6
Enclosure Events ........................................................................................................... 166
14.6.7
StorView Server Events ................................................................................................. 169
14.6.8
SnapShot Events ........................................................................................................... 173
14.7 Failed Drives Codes ................................................................................................................ 175
14.8 SAS Fatal Error Codes ............................................................................................................ 175
15 Statistics ...................................................................................................................................... 177
15.1 Overview ................................................................................................................................. 177
15.2 Access Statistics ..................................................................................................................... 178
15.3 Command Size - Alignment Statistics ..................................................................................... 179
15.4 Read-Ahead Statistics ............................................................................................................. 181
15.5 Command Cluster Statistics .................................................................................................... 183
A Optimizing Write Performance .................................................................................................. 185
A.1 Introduction ............................................................................................................................. 185
A.2 Sequential Access ................................................................................................................... 186
A.2.1
Number of Outstanding Commands .............................................................................. 186
A.3 Access Size ............................................................................................................................. 186
A.3.1
Access Alignment .......................................................................................................... 186
A.4 Sub-Array ................................................................................................................................ 187
A.5 Multiple Drive Failures ............................................................................................................. 188
A.5.1
Faster Rebuild ................................................................................................................ 188
A.6 Summary ................................................................................................................................. 188
B Troubleshooting ......................................................................................................................... 189
B.1 Problems You May Encounter ................................................................................................ 189
C More on Snapshot ...................................................................................................................... 195
C.1 Overview ................................................................................................................................. 195
C.1.1
Terminology ................................................................................................................... 195
C.2 Overwrite Data Area ................................................................................................................ 196
C.3 Overwrite Data Area Location ................................................................................................. 197
C.4 Selecting the ODA Stripe Size ................................................................................................ 197
C.5 Overwrite Data Area Storage Capacity ................................................................................... 197
C.6 ODA Assignment ..................................................................................................................... 198
C.7 Snapshots and Caching .......................................................................................................... 198
C.7.1
Application Caches ........................................................................................................ 198
C.7.2
Operating System Cache ............................................................................................... 199
C.7.3
RAID Controller Cache .................................................................................................. 199
C.8 Virtual LUNs ............................................................................................................................ 199
C.8.1
Virtual LUN Numbering .................................................................................................. 199
Index ................................................................................................................................................... 201
Summary of Contents for 131018 - StorView Snapshot - Mac
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