BlueCielo Meridian Enterprise 2017 Administrator's Guide

Configuring the MinimumSnapshotInterval setting

Meridian maintains a transaction log file for each vault database that contains all changes made to the vault since the log was last committed to the database and a snapshot was created. When the amount of time specified by the MinimumSnapshotInterval setting has elapsed, the log is committed to the database and a new snapshot is created.

This setting works together with the MaximumLogSize (in MB) setting. For example, if MaximumLogSize is set to 8 (default) and MinimumSnapshotInterval is set to 240 (default), when the log file reaches 8 MB, no snapshot will be created unless 240 minutes (4 hours) has elapsed since the last snapshot. Likewise, if 240 minutes (4 hours) has elapsed since the last snapshot, a new snapshot will not be created until the log file size is at least 8 MB.

The primary purpose of MinimumSnapshotInterval is to allow a system administrator to prevent a snapshot from occurring during production hours (as a result of MaximumLogSize being met) when an extraordinary number of changes are made to the vault (such as a batch import), which would adversely affect performance.

Note    henever a Prepare for Backup operation occurs, the log is committed to the database and a new snapshot is created.

To configure the MinimumSnapshotInterval setting:

1. In Administrator, click EDM Server in the left pane. The list of active vaults appears in the right pane.
2. Select the vault that you want to configure in the right pane.
3. On the Action menu and select Properties. The vault’s Properties dialog box appears.
4. Click the Advanced button. The Advanced Vault Properties dialog box appears.
5. Adjust the MinimumSnapshotInterval setting (in MB) and click OK.

This setting can also be configured with the MinimumSnapshotInterval registry key located at:

HKEY_LOCAL_MACHINE\SOFTWARE\Cyco\AutoManager Meridian\CurrentVersion\Installed DataStores\<VaultName>\CompoundItemService\MinimumSnapshotInterval

Tip    To temporarily disable snapshot file creation during large batch operations, create the following DWORD registry value on the Meridian application server:

HKEY_LOCAL_MACHINE\SOFTWARE\Cyco\AutoManager Meridian\CurrentVersion\Installed DataStores\<VaultName>\CompoundItemService\AllowSnapShot

Set AllowSnapShot to 0 to disable creation of new snapshots. Set it to 1 to enable creation of new snapshots. After setting the registry value, stop and restart the AutoManager EDM Server service for the setting to take effect. Then begin the batch operation. When the batch operation has completed, change the value of AllowSnapShot to 1 and restart the service again so that normal snapshot file creation will resume.