IBM System Storage DS3000, Programming Manual

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Enclosure Loss Protection and Drawer Loss Protection
For enclosure loss protection to work, each disk drive in an subsystem must be in a separate enclosure. If
you set the
enclosureLossProtect
parameter to
TRUE
and have selected more than one disk drive from
any one enclosure, the storage subsystem returns an error. If you set the
enclosureLossProtect
parameter
to
FALSE
, the storage subsystem performs operations, but the subsystem that you create might not have
enclosure loss protection.
Enclosure loss protection is not valid when you create logical drives on existing subsystems.
The drawerLossProtect parameter defines if data on a logical drive is accessible even if a drawer fails.
When you assign the disk drives, if you set the
drawerLossProtect
parameter to
TRUE
and select more
than one disk drive from any one drawer, the storage subsystem returns an error. If you set the
drawerLossProtect
parameter to
FALSE
, the storage subsystem performs operations, but the subsystem
that you create might not have drawer loss protection.
You must set the same value for the
enclosureLossProtect
and
drawerLossProtect
parameters. Both of
the parameters must be either
TRUE
or
FALSE
. If the
enclosureLossProtect
parameter and the
drawerLossProtect
parameter are set to different values, the storage subsystem returns an error.
Create Enhanced Global Mirror Group
This command migrates from a FlashCopy logical drive to a Enhanced FlashCopy group, and converts
from an existing FlashCopy repository logical drive to a Enhanced FlashCopy image repository logical
drive. A maximum of four Enhanced FlashCopies can be converted to a Enhanced FlashCopy group. The
Enhanced FlashCopies must be in a Disabled state and must not be involved in a VolumeCopy operation.
The base logical drive can have only four Enhanced FlashCopies (legacy). If the base logical drive has
more than four Enhanced FlashCopies (legacy), you must delete the extra Enhanced FlashCopies before
running this command.
Note: Users must disable any Enhanced FlashCopies before attempting to convert from a FlashCopy
logical drive to a Enhanced FlashCopy group. Use the
disableEnhanced FlashCopy
command to disable a
FlashCopy.
Syntax
convert Enhanced FlashCopylogicalDrive baselogicalDrive="baselogicalDriveName"
Parameters
None
Create Consistency Group
Note: This command does not apply to the FlashCopy commands.
This command creates a new, empty consistency group that can contains Enhanced FlashCopy groups.
You must add the Enhanced FlashCopy groups using the
set consistencyGroup addCGMember command.
Syntax
create consistencyGroup userLabel="consistencyGroupName"
[repositoryFullPolicy=(failBaseWrites | purgeEnhancedFlashcopyImages) |
repositoryFullLimit=percentValue |
autoDeleteLimit=numberOfEnhancedFlashcopyImages |
enableSchedule=(TRUE | FALSE) |
schedule (immediate | EnhancedFlashcopySchedule) |
rollbackPriority=(lowest | low | medium | high | highest)]
Chapter 3. Script Commands
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