Enables SRDF optimization. By default, RiOS directs all traffic on the standard port 1748 through the SRDF module for enhanced SRDF header isolation.

Environments with RF-originated SRDF traffic between VMAX arrays need additional configuration to isolate and optimize the DIFs embedded within the headers of the data payload. For details, see protocol srdf rule.

RE ports are Symmetrix Fiber Channel ports.

SRDF optimization is disabled by default.

SRDF storage optimization provides support for environments using storage technology that originates traffic through Symmetrix GigE ports (RE ports). For details on storage technologies that originate traffic through GigE RE ports, see the SteelHead Deployment Guide.

To increase the data reduction LAN-to-WAN ratio with either equal or greater data throughput in environments with SRDF traffic, RiOS separates the SRDF headers from the application data workload written to storage. The SRDF headers contain changing protocol state information, such as sequence numbers. These headers interrupt the network stream and reduce the ability of SDR to match large, contiguous data patterns. After isolating the header data, the SteelHead performs SDR network deduplication on the larger, uninterrupted storage data workload and LZ compression on the headers. RiOS then optimizes, reassembles, and delivers the data to the TCP consumer without compromising data integrity.

Traffic originated through Symmetrix GigE ports (RE ports) require configuration of the RiOS SRDF storage optimization module. Environments with SRDF traffic originated through Symmetrix FC ports (RE ports) require configuration of the RiOS FCIP storage optimization module. For details, see protocol fcip enable.

You configure the SRDF storage optimization module on the SteelHead closest to the Symmetrix array that opens the SRDF TCP connection by sending the initial SYN packet. This can vary by environment. If you are unsure which array initiates the SYN, configure SRDF on both the client-side and server-side SteelHeads.

If you have enabled or disabled SRDF optimization or changed a port, you need to restart the optimization service.

For details on SRDF optimization in general, see the SteelHead Management Console User’s Guide and the SteelHead Deployment Guide.

The no command option disables SRDF optimization.

SteelHead CX, SteelHead EX, SteelHead-v, SteelHead-c

show protocol srdf rules, show protocol srdf settings