Storage devices have different capacity and performance characteristics. These characteristics affect which devices are better for use with Tivoli® Storage Manager.
| Storage technology type | Database | Active log | Archive log and archive failover log | Storage pools |
|---|---|---|---|---|
| Solid-state disk (SSD) | Place the database on SSD if you are using Tivoli Storage Manager data deduplication and you backup more than 8 TB of new data daily. | If you place the Tivoli Storage Manager database on SSD, as a best practice, place the active log on SSD. If space is not available, use high-performance disk instead. | Save SSD for use with the database and active log. The archive log and archive failover logs can be placed on slower storage technology types. | Save SSD for use with the database and active log. Storage pools can be placed on slower storage technology types. |
| High-performance disk: 15k rpm disk with Fibre Channel or serial-attached SCSI (SAS) interface | Use high-performance disk if the Tivoli Storage Manager server does not do data deduplication and node replication. Isolate the server database from its logs and storage pools, and from data for other applications. | Use high-performance disk if the Tivoli Storage Manager server does not do data deduplication and node replication. For performance and availability, isolate the active log from the server database, archive logs, and storage pools. | You can use high-performance disk for the archive log and archive failover logs. For availability, isolate these logs from the database and active log. | Use high-performance disk for storage pools if the data is frequently read and written. For performance and availability, isolate storage pool data from the server database and logs, and from data for other applications. |
| Medium-performance or high-performance disk: 10k rpm disk with Fibre Channel or SAS interface | If the disk system has a mix of disk technologies, use the faster disks for the database and active log. Isolate the server database from its logs and storage pools, and from data for other applications. | If the disk system has a mix of disk technologies, use the faster disks for the database and active log. For performance and availability, isolate the active log from the server database, archive logs, and storage pools. | You can use medium-performance or high-performance disk for the archive log and archive failover logs. For availability, isolate these logs from the database and active log. | Use medium-performance or high-performance disk for storage pools if the data is frequently read and written. For performance and availability, isolate storage pool data from the server database and logs, and from data for other applications. |
| SATA, network-attached storage | Do not use this storage for the database. Do not place the database on XIV storage systems. | Do not use this storage for the active log. | Use of this slower storage technology is acceptable because these logs are written once and infrequently read. | Use this slower storage technology if storage pool data is infrequently used, for example, written once and infrequently read. |
| Tape and virtual tape | Use for long-term retention or if data is infrequently used. |