Re: I/O Performance and Disk Size

Has it ever occurred to them that as developers, they have to prove to YOU that what they are proposing makes sense?? Some developers think short term, so you have to be wary. As soon as their project is up and running they move on to another one and forget about it. Unfortunately if their proposal costs less, you may have an uphill battle with cost-conscious managers.

5 years ago, most of us were still running DOS 6.2, Windows for Workgroups, Novell 3.12 or OS/2 2.0 (before it was called Warp). A 486/66 was the norm, I think. Won't using these old drives slow down your server? They are running at how many RPMs?

You can check the statistics provided by vendors, I imagine, and compare disk access time, I/O throughput, etc..

What are they going to put on 1G drives, anyway? Those are really small. 8i by itself uses up about 900M! If your database grows significantly you are going to end up with as many drives as there are keys on a piano. That's going to be fun to administer. You will have so many disks that you will be able to predict x drive failures per quarter... maybe one or two drives at the same time! What will that do to your database?

I know that's probably not enough to sway them, but by comparing the disk stats you can at least build an argument using data, instead of opinions. Do they still have disk performance stats that originally came with the drives, I wonder.

Check the web site of the disk manufacturers.

Regards,

Pat.

gary_arvan_at_my-deja.com wrote:

> Howdy, I'm a new Oracle DBA and I'm already in a debate with my developer
> friends regarding Disk I/O and Disk Size. Customer says the 1 Gig SCSI drives
> that are 5+ years old have quicker response than the newer and larger hard
> drives of today. He references performance data and magazine articles that
> are 5 or more years old that clearly show 1gig out performed the 10gig
> drives. But no current data! Consequently, we use 30 refurbished 1 gig
> drives, and yes they do fail rather frequently.
>
> I'm thinking todays 10, 15 or 20 gig drives will out perform these older
> drives, but I have no performance data to back up my claim. Does anybody out
> there have metrics that I could use to justify my claim?
>
> Thanks
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.
Received on Sat May 13 2000 - 00:00:00 CDT