default | Specifies the default setting that works for most implementations. The default setting: • Provides the most data reduction. • Reduces random disk seeks and improves disk throughput by discarding very small data margin segments that are no longer necessary. This Margin Segment Elimination (MSE) process provides network-based disk defragmentation. • Writes large page clusters. • Monitors the disk write I/O response time to provide more throughput. |
sdr-a | Includes the default settings described above, and also: • Balances writes and reads. • Monitors both read and write disk I/O response, and CPU load to provide more throughput. Important: Use caution with this setting, particularly when you are optimizing CIFS or NFS with prepopulation. Please contact Riverbed Support for more information. |
sdr-m | Performs data reduction entirely in memory, which prevents the SteelHead from reading and writing to and from the disk. Enabling this option can yield high LAN-side throughput because it removes all disk latency. SDR-M is most efficient when used between two identical high-end SteelHead models; for example, 6020 - 6020. When used between two different SteelHead models, the smaller model limits the performance. Important: You must reboot the client-side and server-side SteelHeads if you enable SDR-M. You cannot use peer data store synchronization with SDR-M. |
sdr-a-advanced | Maximizes LAN-side throughput dynamically under different data work loads. This switching mechanism is governed with a throughput and bandwidth reduction goal using the available WAN bandwidth. If you have enabled SDR-Adaptive prior to upgrading to RiOS v6.0 and later, the default setting is SDR-Adaptive Legacy. If you did not change the SDR-Adaptive setting prior to upgrading to RiOS 6.0 or later, the default setting is SDR-Adaptive Advanced. Important: If you did not change the SDR-Adaptive setting prior to upgrading to RiOS 6.0 or later, the default setting is SDR-Adaptive Advanced. |