3-Administering the MaxNAS
2.2.2 Expanding NAS volumes
To expand the network accessible space of a RAIDset to take over unused space, select the desired RAIDSet and
click RAID Config on the RAID information screen (see above, section 2.2.) The RAID Configuration page will appear. Click Expand . The Expand RAID Space screen will appear. Select the new percentage of the resulting volume to be
used for network access. Remaining space may be allocated for iSCSI or USB target mode. Click Expand to complete the operation.
2.2.3 Appending disks to RAIDset
If an existing RAIDset does not use all available disk mechanisms it may be expanded onto the unused disk(s.) To expand an existing RAIDset, Select the
desired RAIDSet and click 
on the RAID information screen (see above, section 2.2.) The RAID Configuration page will appear. Select the desired available disk(s) and click Append .
2.2.4 Migrating RAIDSet
The MaxNAS allows RAIDsets to migrate
on to unused disk modules as well as change the RAID level to fully utilize resources or to afford user flexibility. Online RAID level/stripe size migration can prove helpful during performance tuning activities as well as at the addition of physical disks to the MaxNAS. For example, in a system using two drives in RAID level 1, you could add capacity and retain fault tolerance by adding one drive. With the addition of third disk, you have the option of adding this disk to your existing RAID logical drive by migrating from RAID level 1 to 5. The result would be parity fault tolerance and double the available capacity without taking the system offline. To migrate
a RAID 0, RAID 1, or RAID 5 volume, Select the desired RAIDSet and click 
on the RAID information screen (see above, section 2.2.) The RAID Configuration page will appear.
Click Migrate RAID . A list of possible RAID migration configurations will be listed. Select the desired
migration scheme and click | OK | The following is a table of possible RAID migrations: | ||||||
|
|
|
|
|
|
|
|
|
| To |
| RAID 0 |
| RAID 5 |
|
| |
| From |
|
|
|
| |||
|
|
|
|
|
|
|
| |
|
| [RAID 0] HDDx2 to [RAID 0] | [RAID 0] HDDx2 to [RAID 5] |
| ||||
| RAID 0 | [RAID 0] | HDDx3 to [RAID 0] | [RAID 0] HDDx3 to [RAID 5] |
| |||
|
| [RAID 0] | HDDx4 to [RAID 0] HDDx5 | [RAID 0] | HDDx4 to [RAID 5] | HDDx5 |
| |
|
|
|
|
|
|
|
| |
| RAID 1 | [RAID 1] | HDDx2 to [RAID 0] | [RAID 1] | HDDx2 to [RAID 5] |
| ||
|
|
|
|
|
|
|
|
|
| RAID 5 |
| X | [RAID 5] | HDDx3 to [RAID 5] |
| ||
|
| [RAID 5] | HDDx4 to [RAID 5] | HDDx5 |
| |||
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
MaxNAS Owner’s Manual | 22 |