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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*1: The basic size (stripe size) when creating a volume. Refer to "E.1 Basic Size for each RAID Group" (page
995) for details.
Concatenation Order
Select the concatenation order of RAID groups from "Automatic" or "Manual". It is not necessary to
change the default setting (Automatic) for normal use.
- Automatic
Automatically specify the concatenation order of RAID groups.
If multiple WSVs are already registered, the next available RAID group that enables the
controlling CM allocation to be distributed evenly is selected as [1] for the concatenation order.
If multiple RAID groups satisfy this condition, the RAID group with the smallest RAID group
number is selected as [1] in the concatenation order. RAID groups are concatenated starting
from [1] (first) in ascending order. The last RAID group is concatenated to the first RAID group.
Volumes that belong to the RAID group that is first in the concatenation order are called
"representative volumes".
- Manual
Manually specify the concatenation order of the RAID group.
Select RAID Group Information
Input information for the RAID group that configures the migration destination WSV.
If the basic size of the RAID group is 2MB or more, the basic size is specified for Wide Stripe Size
even when "Small" is selected.
When changing the number of concatenations for a WSV, select the same "Wide Stripe Size" as
the migration source WSV. Refer to "When the migration destination volume is "WSV"" (page
131) for procedure to check "Wide Stripe Size" for the destination source WSV.
"Wide Stripe Size" for an existing WSV can be changed by using the migration function.
When changing the number of concatenations for a WSV, specify the same concatenation order
as the migration source WSV. Refer to "Remarks" in "When the migration destination volume is
"WSV"" (page 131) for the procedure to check the concatenation order of migration source
WSVs. When "Manual" is selected for "Concatenation Order", the concatenation order can be
changed. It is not necessary to change the default setting (Automatic) if the concatenation
order after migration can be changed.
When changing the number of concatenations for a WSV, select the same "Disk Type", "RAID Type",
"Number of Member Disks", and "Stripe Depth" as the migration source WSV. Refer to "Remarks" in
"When the migration destination volume is "WSV"" (page 131)
for the procedure to check the
specifications of an existing RAID group.