Re: Solid State Drives
- From: Andrew Kerber <andrew.kerber@xxxxxxxxx>
- To: dofreeman@xxxxxxxxxxx
- Date: Fri, 1 May 2009 09:18:19 -0500
I wrote an article in IOUG Select journal about Solid State. I really think
Solid Statie is the coming thing. At this point, it is too expensive to put
all your storage on SS, but if you put your popular tables on it, you can
see substantial speed improvements.
If they can resolve the write issue, I could see SS really helping to reduce
pinging in RAC by making the IO to disk almost as fast as the IO to cache,
thus reducing the required cache sizes and the pinging caused by that. Redo
log would also be a good usage for SS, reducing the time to switch logs.
Currently, the developers are centered on leveling the writing, that is
making the level of writes the same across all portions of the SSD. That is
showing promise in extending the life of the SS storage. Solaris is
working on a major initiative in SSD, I dont know how that will be affected
by their purchase by Oracle
On Fri, May 1, 2009 at 9:09 AM, Freeman, Donald <dofreeman@xxxxxxxxxxx>wrote:
> Has anybody given any thought to where we are going as SSD's get cheaper
> and bigger? We've been going round and round at my shop with discussions
> about RAID, other disk allocation issues, fights over storage. I mean we
> seem to spend a lot of time on that issue. I saw that IBM is testing a 4 TB
> SSD. I was wondering if you'd have to mirror that, What kind of
> reliability we would be getting. No more RAID discussions? I've heard
> there is a finite number of times you can write to it. What's the upgrade
> path here?
>
--
Andrew W. Kerber
'If at first you dont succeed, dont take up skydiving.'
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