Re: [TCLUG:23272] Bad RAID controller?

[<Nick.T.Reinking@supervalu.com>]

Yes, you will need special drivers for the Escalade card.

It is the same way with SCSI RAID cards - you have two drivers.
One is for the SCSI card itself, and the other is for the onboard
co-processor of the card.

The FastTrack card doesn't have a co-processor to handle the
I/O, but the Escalade card does.

Make sure you go to www.3ware.com and get the special drivers
that you need.

Nick Reinking





jasonj@innominatus.com, on 10/30/2000 11:19:13 AM
To: tclug-list@mn-linux.org @ PMDF
cc:  
Subject: [TCLUG:23272] Bad RAID controller?

I am wondering if anyone else has used the 3ware Escalade 6400 IDE RAID
controller and attempted to copy a hard drive from the motherboard's IDE
controller to a RAID 0 array on the escalade.

If anyone has done this, what were your transfer rates? When I tried, I
was getting about 4meg/min. When using a promise fasttrak 66 I was
getting about 197meg/min.  I was using PowerQuest's Drive Copy 3.0 and
also tried Drive Image, both with the same result.

I am wondering if the lack of optimized drivers is the problem, or if
the escalade controller is just bad. The escalade is a hardware
controller, so I didnt think it would need any sort of drivers to get
better than 4meg/min. I didnt need any special drivers when using the
promise fasttrak. Its kinda wierd that the controller is working fine,
but just slow.

Another strange thing is that when I delete the array and the drives
show up as single drives through the escalade, then I try the drive
copy, the transfer rate is around 100meg/min. Only in RAID 0 is the
controller dirt slow, which is the exact opposite result I was looking
for when buying the card.

I'd hate to go through the procedure of getting a new board and having
the same result.

In case anyone has been thinking about going with IDE RAID I can post
the results of all this testing when the problem is resolved.


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