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Home -> Community -> Usenet -> c.d.o.misc -> Re: big drives (36 gig ) and Oracle performance
Steve Perry wrote:
>
> I was told by our sys admins that they're starting to buy 36 gig drives
> so that they can cut costs on our sp frames. Because of our space
> requirements and the current 9 gig drives are taking up too much space,
> they're going to replace them with 36 gig drives.
> I see a couple of big issues, but I'd like to hear some other opinions.
> 1.) each drive will hold 4 times the data, but my past experience has
> taught me that I won't get 4 times the performance
> 2.) the nodes (S7A) are used for multiple instances, if a drive does go
> down, it will affect all instances using that drive
>
> Question:
> Have others gone to these sized drives?
> How are you utilizing them?
> What other concerns should I be looking at?
> What tips do you have?
>
> Thanks,
> Steve
In fact, there is a very good chance that when you go 4 times larger, you may end up with 1/4 the performance you currently have...
It is a bummer - the vendors continue to come up with 9G, 18G and now 36G drives...Admittedly, each new generation gets a faster disk etc etc, but you still end up with a bottleneck that does not exist with lots of little disks...
Last place I worked we were on 9G drives and we managed to convince management to get some smaller 4G drives, mainly so we could easily isolate redo logs and archives and voila ! bit time performance gains...
HTH
--
"Some days you're the pigeon, and some days you're the statue." Received on Mon Aug 09 1999 - 08:53:05 CDT
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