Fujitsu DX440 S2 Computer Drive User Manual


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Chapter 5 Volume Management
5.2 Functions in the Action Area for Volume
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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Requirements to obtain free space from RAID groups
The "Status" is not " Broken"
The RAID group must satisfy the following requirements:
- The RAID group must contain Standard type volumes, WSVs, SDVs, or SDPVs
If this is not the case, the RAID group must not contain any volumes
- The RAID group must not belong to a TPP
- The RAID group must not belong to an FTRP
- The RAID group must not be registered as an REC Disk Buffer
The number of volumes registered in the target RAID group is 127 or less
The free space for the RAID group is 1GB or larger
The RAID group must not be blocked
LDE is not being performed in the target RAID group
When the disk type of the RAID group to which the concatenation source volume belongs is "SSD", the
concatenation destination RAID group must be configured with "SSD"
When the disk type of the RAID group to which the concatenation source volume belongs is "SED", the
concatenation destination RAID group must be configured with "SED"
Backing up the data before performing volume expansion is recommended.
This function cannot be used under the following conditions:
- When the maximum number of volumes is already registered in the ETERNUS DX Disk storage system
- When switching firmware in hot mode in the ETERNUS DX Disk storage system
- When a RAID group diagnosis or a disk diagnosis is being performed in the ETERNUS DX Disk storage
system
Expanded volume capacity must be recognized by server.
The same RAID type and drive speed is recommended for the RAID group to which the concatenation
volume belongs and the RAID group after concatenation.
The encryption status of volumes after concatenation is the same as the concatenation source volume.
Concatenated volumes are formatted automatically. Refer to the [Volumes] screen for format progress.
To expand the TPV capacity, refer to "5.2.6 Expand Thin Provisioning Volume" (page 121)
.
Volume expansion (LUN concatenation) can be performed even when the concatenation source volume
is being formatted.