DB2 Version 9.7 for Linux, UNIX, and Windows
DB2 Version 9.7 for Linux, UNIX, and Windows
When installing and configuring DB2® Advanced Copy Services (ACS), there are some restrictions to consider.
Volume sharing is not supported. If a database partition resides on the same storage volume as any other database partition, snapshot operations are not permitted. Table 1 lists a number of restrictions that can be avoided by obtaining a full license for IBM® Tivoli® Storage Manager (TSM).
| Functional item | Embedded DB2 support | TSM for ACS support |
|---|---|---|
| Local snapshot backup versions | Maximum of two snapshot versions supported | No product limit. ACS supports as many versions as the storage device and available resources allow. |
| Snapshot support integrated with mirroring | No support | Support for snapshots from either source or target mirror sets for AIX® Logical Volume Manager (LVM) mirroring. |
| Integrated backup of snapshot image to tape | No integrated support. Traditional and snapshot backups are complementary but not integrated. | Fully integrated support for backup of snapshot image to TSM. A single backup command can drive the snapshot backup together with the backup to TSM. |
| Backup to tape offloaded from production server | No integrated support for backup to tape. | Fully integrated support for performing backup to TSM from a secondary host. |
| Integrated backup of ACS repository | No support. External backup can be done when repository is inactive or shut down. | Automatic backup to TSM |