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Chapter 7 Thin Provisioning Pool Management
7.2 Functions in the Action Area for Thin Provisioning
4
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Manually selecting drives to expand a TPP
Select drives manually to expand the TPP.
Check the specifications of the existing RAID groups (number of member drives and drive type)
in the TPP in advance. For the details on how to check the specifications, refer to
RAID group specifications" (page
Check the RAID group specifications
Check the specifications of the existing RAID groups (number of member drives and drive type)
in the TPP in advance. The following describes how to check the specifications.
(1) From the TPP list in
[Name] link for the TPP to be expanded.
(2) The basic information of the TPP is displayed. Click the [RAID Group] tab to switch the
display.
Click the [Done] button to return to the [Thin Provisioning Pool] screen.
•
The conditions for RAID groups in the TPP are as follows:
-
The RAID level (RAID1+0/RAID5/RAID6/RAID1/RAID0) must be the
same
-
The number of member drives in the RAID group must be the same
-
The drive type (Online/Nearline/SSD) must be the same
(When "Online" is selected for "Disk Type", three types of RAID
group may be registered in the TPP. The three available types are a
RAID group that is configured with "Online" disks, a RAID group that
is configured with "Nearline" disks, and a RAID group that is config-
ured with both "Online" disks and Nearline" disks. In this case, regis-
tering RAID groups that are only configured with "Online" disks is
recommended to prevent any reduction of TPP access perfor-
mance.)
•
The following shows the recommended drive configuration of the RAID
group;
-
Select drives with the same capacity. If drives of different capacities
exist in a RAID group, the smallest drive becomes the standard, and
all other drives are regarded as the same capacity as the smallest
drive. In this case, the remaining drive space will NOT be used.
-
Select drives with the same speed. If drives of different speed exist in
a RAID group, access performance of the RAID group may be
affected.
-
When "RAID1+0" or "RAID1" is selected for the RAID level, locate
the drives (mirroring pair drives) divided into different lines (for
ETERNUS DX410 S2/DX440 S2).
-
When "RAID5" or "RAID6" is selected for the RAID level, locate the
drives (striping multiple drives) divided into two or more lines (for
ETERNUS DX410 S2/DX440 S2).
"7.1.1 Thin Provisioning Pool (Basic Information)" (page
ETERNUS Web GUI User's Guide
Copyright 2011 FUJITSU LIMITED
158).
158
End of procedure
"Check the
135), click the
P2X0-1090-02ENZ0
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