Chapter 3 Volume Management
3.5 Expand Volume
ETERNUS Web GUI User’s Guide (Settings)
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3.5
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 an ODX Buffer
volume is 1TB)
•
Concatenation can be performed among multiple RAID groups.
•
Any RAID level can be applied for a concatenation source volume and a concatenation destination volume.
Concatenation can be performed regardless of the RAID level 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
•
"Cache Page Capacity" must not be limited (*2)
•
Volumes are not used for the Storage Cluster function
•
Data protection by "T10-DIF (Data Integrity Field)" is not enabled
*1:
"Totally" is specified for the copy range in the following conditions:
•
When performing a LUN to LUN copy session with the ETERNUS SF AdvancedCopy Manager Copy Control
Module (CCM)
•
When performing a copy session with ETERNUS SF AdvancedCopy Manager Adapter for VMware Site Recovery
Manager
•
When performing a copy session with ETERNUS VSS Hardware Provider
•
When performing a session that is specified with ETERNUS Web GUI or ETERNUS CLI
*2:
A "-" (hyphen) is specified for "Cache Page Capacity" by using the procedure in
"3.14 Modify Cache Parameters"
. Note that "-" (hyphen) is the default value.
Summary of Contents for Eternus DX200F
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