System information

Using the RAID GUI
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4. Click Confirm. The task is created.
2.7.2 Defragmenting disk groups
Except defragmenting disk groups during expansion, there is another way to perform the task.
1. Select Maintenance Utilities > DG Reconfiguration from the main menu.
2. Click Defragment and specify the following options for defragmenting.
3. Click Apply to view the current settings.
4. Click Confirm. The task is created.
After defragmentation is complete, all free chunks will be consolidated into the one free chunk located in the space at the
bottom of member disks.
2.7.3 Changing RAID level / stripe size for logical disks
LD Reconfiguration supports stripe size and RAID level migration for logical disks. You can conduct disk group
expansion with migration at the same time.
To change the RAID level or stripe size of a logical disk, do the following:
1. Select Maintenance Utilities > LD Reconfiguration from the main menu.
2. Click Migrate and specify the following options for an LD migration task.
Note
1. The disk group to be expanded must be in the optimal state.
2. You may only select to increase the number of hard disks but not to change the disk group
setting.
3. Once confirmed, please wait until the expansion process is complete. Do not change or select
any functions during the expansion process.
DG ID Select a disk group to defragment from the drop-down menu.
Schedule Immediately: The task will start immediately.
Once: The task will start on the specified date and time.
Note
1. Defragmentation does not support NRAID disk group.
2. There must be free chunks and logical disks on disk groups.
DG ID/LD ID Select a DG ID and an LD ID from the drop-down menu for migration.
Expanding HDDs The controller performs disk group expansion with specified hard disks.
RAID Level The controller performs the specified RAID level migration.
The feasibility of migration is limited to the original and final RAID level and the
number of member disks in the disk group. The following table defines the rules of
the number disks during the RAID migration.
Table 2-11 Limitations of the number of member disks
Old
New
RAID 0 RAID 1 RAID 10 RAID 3/5 RAID 6
RAID 0 Nn ≥ No OK OK OK OK
RAID 1 N/A Nn > No N/A N/A N/A
RAID 10 Nn ≥ No*2 OK Nn ≥ No Nn ≥ (No-1)*2 Nn ≥ (No-2)*2
RAID 3/5 Nn ≥ No+1 OK OK Nn ≥ No OK
RAID 6 Nn ≥ No+2 OK OK Nn ≥ No+1 Nn ≥ No