Chapter 5 RAID Group Management
5.5 Expand RAID Group
ETERNUS Web GUI User’s Guide (Settings)
Copyright 2015 FUJITSU LIMITED
P2X0-1270-13ENZ0
541
Availability of LDE for each combination of RAID levels
The following table shows availability of LDE functions (changing RAID levels or capacity expansion by adding
drives).
OK: LDE is available, N/A: LDE is not available
•
Before expanding the RAID group, back up data in all the logical volumes in the target RAID group to a
different location. If not, data cannot be recovered when expansion fails. If expansion fails, data can be
recovered from the backed up data.
•
RAID Group Expansion can only be performed for one RAID group at a time.
•
RAID Group Expansion cannot be suspended.
•
The following functions cannot be used for RAID groups in which RAID Group Expansion is being
performed:
-
Format volume
-
Create volume
-
Encrypt volume
-
RAID migration for the volume
-
Expand volume
-
Preventive maintenance
-
Diagnosis for RAID group
-
Diagnosis for disks
•
For some combinations of RAID levels, LDE cannot be used. Refer to
combination of RAID levels" (page 541)
for details.
•
RAID groups can be expanded when the RAID group capacity after performing expansion is the same or
larger than the current RAID group capacity.
•
When expanding the drive capacity that configures a RAID group, use the procedure in
instead of this function.
•
In the controller firmware versions V10L31 and earlier, "SED" indicates "Online SED".
RAID level after changing
RAID0
RAID1
RAID1+0
RAID5
RAID5+0
RAID6
RAID6-FR
RAID level
before
changing
RAID0
OK
N/A
OK
OK
N/A
OK
N/A
RAID1
N/A
N/A
OK
OK
N/A
OK
N/A
RAID1+0
N/A
N/A
OK
OK
N/A
OK
N/A
RAID5
N/A
N/A
OK
OK
N/A
OK
N/A
RAID5+0
N/A
N/A
N/A
N/A
N/A
N/A
N/A
RAID6
N/A
N/A
OK
OK
N/A
OK
N/A
RAID6-FR
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Summary of Contents for Eternus DX200F
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