We have recently deployed iSCSI storage on Intel's SSR212MC2R platform. The configuration is as follows:

1. Intel SSR212MC2R (latest BIOS and RAID fw)
2. 1xE5310 Quad Core Xeon
3. 4GB FB-DIMM DRR2 RAM
2. 12x750GB Seagate HDD
3. Hardware RAID 5 with BBU (approx 8TB usable)
4. 2xGigabit connections with IO AT enabled (not teamed/bonded)
5. Open-E iSCSI-R3 (dated Nov 2007)
6. Linksys 8 port Gigabit switch with SNMP

The problem is I am only getting writespeeds of 5MB/sec. Customer expectation was closer to 90-100MB/sec.

I have tried using a crossover cable and connecting directly to clients with no luck.

Customer has an older Intel SSR212MA storage system and connecting through same setup we are getting a solid 70MB/sec xfers.

Any idea what could be causing the slow performance?