[olug] Raid and or Journaling

[Nick Walter]

I've been using software raid with 2.2 and 2.4 kernels and love it.  I've
used Raid-1 (software) for some critical systems such as primary DNS server,
and had no problems.  I also haven't had a drive failure yet, so I can't say
how well software raid-1 handles it.

Funny but true Linux Software Raid story:  I made some estimates for how
long it would take a customer to move a large amount of data onto their
system.  I made my estimates based on a quite similar system that I had
handy to test with.  The chief difference between the two systems was that
the customer systems had 130GB of disk space spread over 5 Ultra-160 SCSI
drives connected to a DPT hardware raid controller.  My test system had had
160 GB of disk space apread over 2 Maxtor IDE drives and 2.2 kernel software
raid-0.  My estimates proved quite wrong for the customer because my
Maxtor-IDE/software-raid system had 20% faster I/O than the
160-SCSI/hardware-RAID solution . . .

Nick Walter
Interact Incorporated

-----Original Message-----
From: Vincent [mailto:vraffensberger at home.com]
Sent: Wednesday, October 24, 2001 9:20 PM
To: olug at bstc.net
Subject: Re: [olug] Raid and or Journaling


I've been using s/w raid (raid5) at work in very intense production systems
for nearly two years without any trouble, even after a disk failure.  We
have one application called "drivewidower", due to it's ability to trash a
good scsi drive every 6 months and it is now writing to a s/w raid without
any problems.
We also use reiserfs, to an extent, on s/w raid without any trouble at all.
I've been testing Ext3 to see if there's any advantages to switching to it
in the near future.  I haven't had any trouble with it either, but I'm not
sure if it would help in the environments where we're currently using ext2.

----- Original Message -----
From: "Mike Peterson" <mikejack at radiks.net>
To: "OLUG Linux" <olug at bstc.net>
Sent: Wednesday, October 24, 2001 7:00 AM
Subject: [olug] Raid and or Journaling


> Has anyone had good luck using Linux Software RAID?
> Has anyone had good luck running Reiser or JFS or Ext3 or other journaling
> file systems with Linux?
> If so, what distribution are you running and how many users?
> Also is it for file serving, web serving, database serving, mail serving
or
> combined?
>
>
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For help contact olug-help at bstc.net - run by ezmlm
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