Modifying RAID group mapping
You may change the LUNs of drives manually or let the ExpressNAV Storage Manager map drives for you.
1Follow the instructions in Preliminary steps on page 31 and click on the RAID Groups arrow from the Select User Process box.
2Click on the Modify RAID Group Mapping button.
3Click on Next.
4Select the RAID group you wish to change from the drop down box.
5Select the method you wish to use to map the partitions. Refer to Modifying RAID group partitions below.
•If you select Auto, all mapping for all RAID groups attached to this FastStream is changed, destroying any previous mapping.
•If you do not wish to change the mapping of your other RAID groups, select Manual, then click on any partition to map that partition to a Port and LUN.
6Click on Commit to save the new mapping.
7A warning box tells you some mapping configurations may impair performance. Complete the mapping change by clicking on Yes. Clicking on No ends the procedure without making a change.
8The Health and Status Monitor page appears.
Modifying RAID group partitions
A RAID group may have several Terabytes of total data capacity because of the size of the included drives. Partitions allow you to break up large RAID groups into smaller, more manageable groups.
Most host systems can address only 2 TB per LUN. Partitioning increases storage efficiency by providing more LUNs without using lower capacity RAID groups.
Partitioning allows the creation of multiple logical volumes.
1Follow the instructions in Preliminary steps on page 31 and click on the RAID Groups arrow from the Select User Process box.
2Click on the Modify RAID Group Partitioning button.
3Click Next.
4Select the RAID Group Name from the drop down menu.
5Using the graphic and drop down boxes, choose to either merge or split existing partitions or to assign different values for the partition sizes.
6Click Commit.
7A warning box appears. In the warning box, verify that you want to complete the configuration by clicking on Yes. Clicking on No ends the procedure without making a change.
8When the process is complete, the Health and Status Monitor page appears.
Rebuilding RAID groups
If RAID groups become compromised in some fashion, you must rebuild them.
If you have previously enabled
Refer to Step 17 under Creating a custom setup on page 16 for information on
Hot Spares, if available, are used first, regardless of the
If you have not enabled
1Follow the instructions in Preliminary steps on page 31 and click on the RAID Groups arrow from the Select User Process box.
2Click on the Rebuild RAID Groups button.
3Click on Next.
4Follow the
5A warning box appears. In the warning box, verify that you want to complete the rebuild by clicking on Yes. Clicking on No ends the procedure without making a change.
6When the process is complete, the Health and Status Monitor page appears.
33
ATTO Technology Inc. FastStream SC Installation and Operation Manual
