Fujitsu DX80 S2/DX90 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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5.2.5 Expand Volume
This function concatenates a new volume to the selected volume by using the LUN Concatenation function to
expand the volume capacity that can be used from the server.
Volume expansion provides the following features:
Volume capacity can be expanded by using the free space in an existing RAID group.
Free space that is 1GB or more can be concatenated.
A volume with a maximum capacity of 128TB can be created. (The maximum capacity of ODX Buffer
volume is 1TB.)
Concatenation can be performed among multiple RAID groups.
Any RAID type can be applied for a concatenation source volume and a concatenation destination volume.
Concatenation can be performed regardless of the RAID type for the concatenation source volume and the
concatenation destination volume.
Data can be accessed from the host in the same way regardless of the concatenation status (before,
during, or after concatenation).
When the number of volumes in a concatenated volume is 15 or less, volumes can be added to the existing
concatenated volume.
Requirements for concatenating a volume
The "Type" is "Standard"
The "Status" is not " Broken", " Data Lost", " Not Ready", or " Readying"
The volume capacity is 1GB or larger
When the concatenation source volume is a concatenated volume, the volume must satisfy the following
requirements:
- The number of volumes in the concatenated volume must be 15 or less
- The capacity of the concatenated volume must be less than 128TB
(If the concatenated volume is configured with an ODX Buffer volume, the volume must be less than
1TB)
RAID migration is not being performed (the target volume is not used as a migration source or a migration
destination)
There are no Advanced Copy sessions (local or remote) for which the copy range is "Totally" (*1)
LDE is not being performed for the RAID group to which the target volume belongs
Encryption is not being performed for the target volume
A Storage Migration path is not created in the target volume
The "Cache Page Capacity" must not be limited (*2)
*1: "Totally" is specified for the copy range in the following conditions:
When performing a LUN to LUN copy session with the ETERNUS SF AdvancedCopyManager Copy Control Module
(CCM)
When performing a copy session with ETERNUS SF AdvancedCopyManager Adapter for VMware Site Recovery
Manager
When performing a copy session with ETERNUS VSS Hardware Provider
When performing a SnapOPC+ session that is specified with GUI or CLI
*2: A "-" (hyphen) is specified for "Cache Page Capacity" by using the procedure in "5.2.18 Modify Cache Parameters"
(page 148). Note that "-" (hyphen) is the default value.