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sybperl-l Archive

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From: "Jack H dot Stanley" <jstanley at chron dot com>
Subject: Re: Question about RAID levels using Sybase 11.9.2....
Date: Jul 7 2000 4:17AM

We have been using RAID5 for 6 operational SYBASE servers for 6+ years and have
experienced consistent and reliable performance - it is all in the RAID
controller hardware - we use CMD's with lots of memory.

Robert Banniza wrote:

> Guys,
>         I have a question here and I don't mean to start a religuous RAID war
> either. I got into a discussion with my company's data center manager the
> other day and we started talking about RAID. One thing led to another and I
> told him that I was going to build a particular Sybase installation using
> RAID-5 on a Sun E450 (using the built in hardware RAID controller). The next
> thing I know, this guy starts telling me how stupid of an idea this is and
> the only way to build a database installation is using RAID-1. In the shops
> that I have worked in as either a programmer or sysadmin. in the past, we
> have always used RAID-5. I did my research and several sites were pointing
> to using RAID 0+1 (striping+mirroring). Can someone tell me what RAID level
> most Sybase shops use? This particualr Sybase installation will be writing
> from some big files with more a lot of reading (BulkStats project). Either
> way, I would appreciate any information as I want to know the best way to do
> this and the reasoning behind it. I'm looking for ease of data recovery and
> performance whilst configuring my RAID levels. Thanks for any help.
>
> Robert
>
> P.S. I know this is a Linux/Sybperl list but I have gotten some great
> information in the past from here.