Shared Nothing

This page contains settings specific for a Shared-Nothing Cluster

settings-shared-nothing-main-window

Setting	Description
`Active node snapshot interval`	Sets the frequency by which snapshots are taken of a pool on its active node. The passive node is responsible for replicating these snapshots using ZFS send/receive. The amount of snapshots kept locally is governed by the snapshot retention value.
`Passive node snapshot retrieval interval`	Sets the frequency by which the passive node checks an active node to ensure it has up-to-date copies of all active pool snapshots. Any missing snapshots will be synchronised using ZFS send/receive and any expired snapshots (as dictated by the snapshot retention value) will be removed. Using a pull mechanism ensures any node recovering after a crash will immediately synchronize any missing snapshots. Using this approach also removes the requirement for the active node to continually attempt to send snapshots to the passive node, which could be unavailable.
`Snapshot Retention`	The amount of snapshots to be retained for each pool on all nodes. Once the retention number is reached, and as new snapshots are taken, the oldest are purged to maintain the snapshot retention level.