Chapter 5 RAID Group Management
5.5 Expand RAID Group
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED P2X0-1270-13ENZ0
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Drive selection requirements for changing the RAID level
The following conditions are also required when changing the RAID level.
• When the RAID level before and after LDE is not changed:
The drives that are used in the RAID group before LDE was performed cannot be deleted.
• When the RAID level is changed after LDE:
- The number of RAID group data drives (*1) after LDE cannot be less than the number before LDE.
*1: "Number of data drives" indicates the number of logical drives in RAID groups that contain user data. This
number is different for each RAID level.
*2: D: Data drives, M: Mirror drives, P: Parity drives
- Drives that are not used after changing the RAID level can be deleted from the RAID group. However,
not all of the drives can be deleted from a RAID group.
For details on the parameters for this function, refer to "A.5.4 Expand RAID Group" (page 915)
.
For the factory default settings for this function, refer to "Appendix B Expand RAID Group" (page 1005)
.
The procedure to expand RAID group capacity is as follows:
1 Select the RAID group that is to be expanded and click [Expand] in [Action].
2 Select the RAID level after expansion.
The main setting items are as follows.
● Manual Setting
• RAID Level after expand
RAID level Drive configuration (*2) Number of data drives
RAID1+0 nD+nM n
RAID5 nD+1P n
RAID6 nD+2P n
RAID1 1D+1M 1
RAID0 nD n
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