User guide

5
MAXDATA SR1202 M1 – StorView
®
RAID User Guide
Advanced Logical Drive Functions ........................................................................................................... 96
Viewing Unassigned Free Space ......................................................................................................... 96
Expanding a Logical Drive ................................................................................................................... 96
Deleting a Logical Drive ...................................................................................................................... 98
12 Failover, Performance and Additional Functions 101
How StorView Server Failover Works .................................................................................................... 101
StorView Performance Optimization ...................................................................................................... 101
Execution Throttle ............................................................................................................................. 101
Scatter/Gather ................................................................................................................................... 101
Additional StorView Functions ............................................................................................................... 102
About ................................................................................................................................................ 102
Take Control Monitoring .................................................................................................................... 103
Rescan .............................................................................................................................................. 104
13 Support and Updates 105
Tech Support .......................................................................................................................................... 105
Updating Embedded StorView Software ............................................................................................... 106
14 Event Logs 109
Overview ................................................................................................................................................ 109
Accessing and Navigating the StorView Event Log ............................................................................... 110
Exporting the StorView Event Log ......................................................................................................... 112
Clearing the StorView Event Log ........................................................................................................... 115
Operating System Event Log ................................................................................................................. 116
List of Events ......................................................................................................................................... 116
Controller Events ............................................................................................................................... 116
Drive and Array Events ...................................................................................................................... 120
Controller Port Events ....................................................................................................................... 125
Enclosure Events .............................................................................................................................. 127
StorView Server Events .................................................................................................................... 130
Failed Drives Codes ................................................................................................................................ 133
15 Statistics 135
Overview ................................................................................................................................................ 135
Access Statistics .................................................................................................................................... 135
Command Size - Alignment Statistics .................................................................................................... 136
Read-Ahead Statistics ............................................................................................................................ 138
Command Cluster Statistics ................................................................................................................... 139
16 Optimizing RAID 5 Write Performance 141
Introduction ............................................................................................................................................ 141
Sequential Access .................................................................................................................................. 142
Number of Outstanding Commands ................................................................................................. 142
Access Size ............................................................................................................................................ 142
Access Alignment ............................................................................................................................. 142
RAID 5 Sub-Array ................................................................................................................................... 143
Multiple Drive Failures ............................................................................................................................ 143
Faster Rebuild ................................................................................................................................... 143
Summary ................................................................................................................................................ 143
17 Troubleshooting 145
Problems You May Encounter ................................................................................................................ 145
Index 149