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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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• FTSP Priority
Select either "Auto" or the FTSP number that belongs to the migration destination FTRP for the FTSP
number to which priority is given.
When FTRP is not selected from the migration destination list, only "Auto" is displayed as the
available option. If FTRP is specified, "Auto" and the FTSP numbers that belong to the migration
destination FTRP are displayed. If "FTSP number" is selected and the specified FTRP is changed, the
"FTSP Priority" setting returns to the default value ("Auto").
"FTSP Priority" indicates the FTSP number to which priority is given for allocating physical capacity as
the volume migration destination when multiple FTSPs exists in the migration destination FTRP.
When "Auto" is selected, the physical area is allocated to an FTSP for which the disk type is "Online".
If no free space exists in "Online" type disks and migration is not available, the physical area is
allocated to an FTSP for which the disk type is "Nearline". If "Nearline" is also not available for
migration, the physical area is allocated to an FTSP for which the disk type is "SSD". Migration to an
FTRP cannot be performed if "SSD" is not available for migration. "SED" type FTSPs are used as
"Online" type FTSPs.
When "FTSP number" is selected, the physical area is allocated to the selected FTSP. If there is no
free space in the selected FTSP and migration is not available, the migration destination FTSP
number is determined as having the same priority ("Online" → "Nearline" → "SSD") as when "Auto"
is selected.
The disk type for FTSPs can be checked from the [Flexible Tier Pool Detail] screen (Flexible Tier Sub
Pool). Refer to "7.1.8 Flexible Tier Pool Detail (Flexible Tier Sub Pool)" (page 214)
for details.
• Encryption
The encryption status of the migration source volume is displayed as the initial state.
Select the encryption status of the volume after migration. There are no limitations for the encryp-
tion status of migration source and destination volumes. Note that when migrating an encrypted
volume to an unencrypted volume, the user must have the "Security Setting" policy.
Refer to "Combinations of Encryption Conditions for which Migration is Available" (page 124)
for
details.
- None
- by CM
- use SED (Disabled Key Group)
- use SED (Enabled Key Group)
• Start Zero Reclamation after migration
Select "Enable" or "Disable" for the Zero Reclamation of source volumes after migration is complete.
When Zero Reclamation after migration is enabled, the source volume will be reserved for Zero
Reclamation.
"Zero Reclamation" is a function that releases the allocated physical area when data in the physical
area that is allocated to a TPV or an FTV is filled with zeros.
This item is available only when the migration destination is "Thin Provisioning Pool" or "Flexible
Tier Pool".
• When "use SED (Disabled Key Group)" or "use SED (Enabled Key Group)" is selected for
"Encryption", use an SED for the migration destination.
• When "None" or "by CM" is selected for "Encryption", do not use SEDs for the migration
destination. Use other type of disks.
• When the encryption mode is disabled, "by CM" cannot be selected.