PRO 6 poor read performance??

Thx for the replies.

mdgm wrote:
What disk(s) are in your PC? Are you using RAID in it? If you have a single mechanical hard disk in your PC that would probably be the bottleneck.

I started with one ST31500341AS, and now have 4 ST31500341AS. using XR2. As noted in an earlier post, I added them one at a time (waiting for the volume expansion to complete). The internal "Bonnie" add on measured faster disk throughputs (> 300 MB/s with 4 drives), but the network read speed did not change much.

victorhortaliveson wrote:
When I had this sort of problem before it turned out to be outdated NIC drivers. I was running Win7 32bit using an Intel PRO/1000 PT PCIe. Even after updating the drivers I found Read speed to be lower than Write speed. I did manage to get 90MBps Write and 80+MBps Read. This was to/from a ProPioneer with 5 drives using 9K Jumbo Frames through 2 Netgear GS108tV1 switches and CAT6 LAN.

The Windows 7 machine is a T410 laptop with an i7 processor. I found a newer NIC driver, and have fiddled with settings - so far I haven't seen much improvement there. I've tried direct connect, but generally find that connecting through my GS108TV2 gives the same results, and is much simpler. Cabling is Cat 5E, but very short (5 feet cables). Jumbo frames help on the Win7 for reads, but seem to hurt it for writes.

One challenge on the Windows 7 system is that I cannot turn off the antivirus stuff (it is a corporate machine, and I cannot change the domain policies).

The Vista machine has a RealTek adapter, I haven't found newer drivers (except for suspicious hits on "driver update" software sites). I can turn the firewall off on that (which does help some).

BTW, is NFS faster? If so, which clients are folks using? What about iSCSI?