Re: Software RAID5 slow write speeds

This is just general troubleshooting not specific knowledge on my part.
When you tested the added NIC, did you disable the others? Did you leave the
default settings of the new connection unchanged?Assuming you did, cos you
sound as though you are being pretty systematic, that rules out both the
hardware and the Connection properties (e.g advanced settings)
Did you try a direct cable connection? That rules out anything at all in the
network.
No other software loaded? Nothing filtering or encrypting the data? I
suppose as we are trying to find something happening in the I/O you could
try filemon and see if anything strange kicks in when you write.
I forget if you said you had tried rebuilding it with the recovery disks.
That's the only option left. We had a NAS once that ran really slow (not
this slow) but that was because someone had done a little experimenting with
it. We rebuilt it and it ran fine.
Anthony

"gstar" <gary.brett@xxxxxxxxx> wrote in message
news:1157107975.255633.202380@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Anthony wrote:
Well to me that is conclusive. Its not the RAID. It could be a firewall
or
antivirus, but I don't think its likely. It sounds like the networking.
Just
to try a different tack, is it set up for Mac, NFS, Netware etc, and can
you
disable those in the network properties?
Anthony

Hi Anthony,
This is really doing my had in now. Just to recap on fixes I have tried
-
- I ensured none of the services above were present
- Increased memory to 1.5GB from & including original 512mb
- Added an additional 100mb NIC alongside original 1GB cards
- Installed SP from HP with hot fixes, rebooted several times
- Changed CAT5e patch cables and LAN switch.
- Ran tests copying from LAN desktop to NAS USB drive [same results]
- Ran test across NAS drives and from USB stick [very fast (see
attached image)]


Before upgrading

WRITE 11MB TO NAS 1200S - 21.37kbps
READ 11MB FROM NAS 1200S - 888.62kbps

After upgrading

WRITE 11MB TO NAS 1200S - 334.27kbps
READ 11MB FROM NAS 1200S - 536.85kbps

As you can see, still a long way to go but I am lost as are HP who are
running similair test and reaching 10mbps!

Are we at the end of the line here? Shall I bin it!

Cheers

Gary



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