CLI Guide

ManualsBrandsDell ManualsCompellent (SCEMC PowerVault ME4012

141

142

143

144

145

146

147

148

149

150

If you change this parameter while a replication is running, for the current replication it will affect only the

secondary system. In this case the value can only be increased, so you might have one less expected

snapshot on the primary system than on the secondary system.

[snapshot-history disabled|off|secondary|both]

Optional. Specifies whether to maintain a replication snapshot history for the replication set, as described

above.

• disabled or off: A snapshot history will not be kept. If this parameter is disabled after a replication set

has been established, any existing snapshots will be kept, but not updated. This option is the default

• secondary: A snapshot history set will be kept on the secondary system for the secondary volume,

using snapshot-count and snapshot-basename settings.

• both: A snapshot history will be kept for the primary volume on the primary system and for the

secondary volume on the secondary system. Both snapshot histories will use the same snapshot-

count and snapshot-basename settings.

If you change this parameter while a replication is running, for the current replication it will affect only the

snapping of the secondary volume.

[snapshot-retention-priority never-delete|high|medium|low]

Optional. For virtual storage, this specifies the retention priority for history snapshots, which is used when

automatic deletion of snapshots is enabled by using the set snapshot-space command. In a snapshot tree,

only leaf snapshots can be deleted automatically. Deletion based on retention priority is unrelated to deleting

the oldest snapshots to maintain a snapshot count.

• never-delete: Snapshots will never be deleted automatically to make space. The oldest snapshot in

the snapshot history will be deleted once the snapshot-count value has been exceeded. This is the

default

• high: Snapshots can be deleted after all eligible medium-priority snapshots have been deleted.

• medium: Snapshots can be deleted after all eligible low-priority snapshots have been deleted.

• low: Snapshots can be deleted.

If you change this parameter while a replication is running, for the current replication it will affect just the

secondary snapshot. An optional primary snapshot will already be created before the change takes affect.

current-replication-set-ID

Specifies the current name or serial number of the replication set for which to change the name.

Examples

Rename the replication set Rep1 to RepSet1.

# set replication-set name RepSet1 Rep1

Change replication set RepSet1’s queue policy to discard a new replication request when a replication is

running.

# set replication-set queue-policy discard RepSet1

For replication set RepSet1 with primary volume Data, enable snapshot history for the secondary volume

only, allowing up to 10 replication snapshots with the basename repsnapData to be retained for that

volume.

# set replication-set snapshot-history secondary snapshot-basename

repsnapData snapshot-count 10 RepSet1