[tslug] Re: SCSI and Linux

[Sean M. Foy]

I have used Adaptec AHA-2940U2W and ASC-29160 controllers in my linux
machines over the past few years. I haven't had any trouble. I have used ATA
drives before and since and while I can't say that I can notice a difference
in seek times, the overall performance does seem to be better. I haven't
done any objective testing. Apart from the various performance benefits,
it's much easier (possible!) to find HDs with 5 year warranties; I think
it's less likely that I will have to deal the hassle of HD failure with SCSI
devices.

I've heard good things about ATTO (http://www.attotech.com/) and I'm
considering picking up one of their controllers, but so far my only
experience is with Adaptec. 

Sean
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Joshua
Sent: Thursday, April 29, 2004 6:19 PM
To: [EMAIL PROTECTED]
Subject: [tslug] SCSI and Linux


Hi Everyone,

I've been investigating SCSI hard drives lately, and I wanted to know if 
TSLUG members had done any experimentation with Linux and SCSI. What 
interface cards, hard drives, etc. that have worked for you with Linux? 
With SCSI hard drives, is there a very noticeable speed increase in hard 
drive access time? I'm really interested in what everyone has to say 
about this.

Joshua K.
[EMAIL PROTECTED]

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[tslug] Re: SCSI and Linux

[Caleb Jorden]

Josh,

SCSI hard drives are supported in Linux.  More specifically, Linux
supports a large number of SCSI cards.  Adaptec are well-supported, as
are most other brands of SCSI controllers.  Your best bet is to find one
you like and search around on google to see what people have been saying
about it and Linux.

As for the speed increase, it is real.  Depending on your bus interface
(PCI-X, 64bit/66MHz PCI) the speed increases will be different.  The CPU
utilization tends to be a little bit lower too when using SCSI disks
with disk-intensive processes.

RAID controllers are also well-supported by Linux.  If you want really
good speed, get a RAID5 system.  But, if you are short on cash, you
might just want to try out a smaller setup.  When I say a RAID system, I
am talking about hardware RAID, not the stuff done in software.  But
software has its advantages too, but not nearly as much in speed as
hardware.

I hope this is helpful.

Caleb Jorden
[EMAIL PROTECTED]

On Thu, 2004-04-29 at 18:18, Joshua wrote:
> Hi Everyone,
> 
> I've been investigating SCSI hard drives lately, and I wanted to know if 
> TSLUG members had done any experimentation with Linux and SCSI. What 
> interface cards, hard drives, etc. that have worked for you with Linux? 
> With SCSI hard drives, is there a very noticeable speed increase in hard 
> drive access time? I'm really interested in what everyone has to say 
> about this.
> 
> Joshua K.
> [EMAIL PROTECTED]
> 
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> To get off this list, send email to [EMAIL PROTECTED]
> with Subject: unsubscribe
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> 


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