Re: [TCLUG:23272] Bad RAID controller?

[Jason J <jasonj@innominatus.com>]

I called up the company and they tried the same setup I was trying. One drive
on the onboard IDE controller, then using Drive Image Boot Floppies to 3 WD
hard drives in RAID 0 with an Escalade 6400. That guy got somewhere around
497meg/min, I got 4meg/min.

Do you think the engineer didnt understand the situation and did something
different, or that my card is bad?

And if the card is just fine, how would you handle this exact drive copy
without it taking 3 days at 4meg/min?

Use another machine, compile a linux kernel with the escalade drivers, put
that on a disk, and use dd?


Thanks for the help.




Nick.T.Reinking@supervalu.com wrote:

> 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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