Why Is RAID Dying a Slow Death? -- Enterprise Systems

Discussion:

(too old to reply)

Lester Knutsen

2014-05-04 15:22:12 UTC

Interesting from a major storage news letter - Lester

http://esj.com/articles/2014/05/02/raid-dying-a-slow-death.aspx

--
______________________________________________________________________
Lester Knutsen ***@advancedatatools.com
Advanced DataTools Corporation Voice: 703-256-0267 x102
Visit our Web page: http://www.advancedatatools.com
______________________________________________________________________

Jack Parker

2014-05-04 15:53:28 UTC

Permalink

I wonder how reliable SSD is in the grand scheme of things.

j.

Post by Lester Knutsen
Interesting from a major storage news letter - Lester
http://esj.com/articles/2014/05/02/raid-dying-a-slow-death.aspx
--
______________________________________________________________________
Advanced DataTools Corporation Voice: 703-256-0267 x102
Visit our Web page: http://www.advancedatatools.com
______________________________________________________________________
_______________________________________________
Informix-list mailing list
http://www.iiug.org/mailman/listinfo/informix-list

Justin Killen

2014-05-05 16:04:17 UTC

Permalink

The major downside of SSD's is that any given bit/byte/block has a finite amount of write cycles. If you look, you can find many RAID solutions that are targeted specifically at SSD drives, so SSD's are not at all a RAID replacement (at least not today). More recently, vendors have been adding facilities to help spread the load across the drive evenly, using internal re-mappings and whatnot. In effect, a lot of these drives have a (limited) built-in tolerance.

Still though, if you're trusting 100% of your data on a single device, then you're probably in bad shape - I hope your backups are good, because eventually that device is going to fail. My advice? Keep with the old adage - don't put all your eggs in one basket.

-Justin

-----Original Message-----
Sent: Sunday, May 04, 2014 8:53 AM
To: Lester Knutsen
Cc: Washington Area Informix Users Group Mailing List; Informix-List; ADTC
Staff
Subject: Re: Why Is RAID Dying a Slow Death? -- Enterprise Systems
I wonder how reliable SSD is in the grand scheme of things.
j.

_______________________________________________
Informix-list mailing list
http://www.iiug.org/mailman/listinfo/informix-list

Lester Knutsen

2014-05-05 23:05:56 UTC

Permalink

Jack,

All media will have bit rot. However for the last 3 years I have had a 1TB SSD in my main development server for Informix with no problems and we have had 2-3 1 or 2 TB disks fail. I think bigger disks are more likely to fail. Use Raid 10 to provide true redundancy.

Regards - Lester

Post by Jack Parker
I wonder how reliable SSD is in the grand scheme of things.
j.