Fujitsu ETERNUS DX60 S3 User Manual page 541

Chapter 5 RAID Group Management
5.5 Expand RAID Group
• 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)
• 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
Migration" (page 301)
• In the controller firmware versions V10L31 and earlier, "SED" indicates "Online SED".
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).
RAID level
before
changing
OK: LDE is available, N/A: LDE is not available
instead of this function.
RAID0 RAID1
RAID0 OK
RAID1 N/A
RAID1+0 N/A
RAID5 N/A
RAID5+0 N/A
RAID6 N/A
RAID6-FR N/A
ETERNUS Web GUI User's Guide (Settings)
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for details.
RAID level after changing
RAID1+0 RAID5
N/A OK OK
N/A OK OK
N/A OK OK
N/A OK OK
N/A N/A N/A
N/A OK OK
N/A N/A N/A
541
"Availability of LDE for each
"3.9 Start RAID
RAID5+0 RAID6 RAID6-FR
N/A OK
N/A OK
N/A OK
N/A OK
N/A N/A
N/A OK
N/A N/A
P2X0-1270-13ENZ0
N/A
N/A
N/A
N/A
N/A
N/A
N/A