Customers may experience slower than normal backups and backup escalations when using Fast Compression in version 8.2.0.
Customers may see their backups running more slowly than with LiteSpeed for SQL Server 8.2.0, depending on the compression level used and whether LiteSpeed is set to automatically calculate the number of backup compression threads. Automatic threading is on by default. Customers may also see Fast Compression backup escalations to full backups after SmartCleanup removes a backup from disk.
Workaround:
The recommended resolution is to install LiteSpeed for SQL Server 8.2.1.
Customers who remain on 8.2.0 can work around the Fast Compression backup performance issue by setting an explicit number of backup compression threads in the Fast Compression job. Refer to the @Threads parameter for xp_slsFastCompression or set the Compression Threads Advanced Option in the Backup Wizard to a value other than “Default”.
There is no work-around for the backup escalation issue, short of disabling Backup Escalation for Fast Compression, which is not recommended. See the @FullBackupEscalation parameter for xp_slsFastCompression or set the “Enable backup escalation” option in the Backup Wizard.
Upgrading to 8.2.1 is highly recommended.
Status:
