[OpenIndiana-discuss] Raid type selection for large # of ssds

[Roel_D]

A little drunk, so i disagree! 

Since the pool is used for VM's A N D datastorage you will have double or maybe trippled readtimes. The virtual os/ storage will/read write and after that the pool and thus the core (OI) will write/read bits AND parity. 

But again... A little drunk

Kind regards, 

The out-side

Op 6 okt. 2012 om 22:55 heeft "Dan Swartzendruber" <dswartz at druber.com> het volgende geschreven:

> LOL, good point Bob :) 
> 
> -----Original Message-----
> From: Bob Friesenhahn [mailto:bfriesen at simple.dallas.tx.us] 
> Sent: Saturday, October 06, 2012 4:46 PM
> To: Discussion list for OpenIndiana
> Subject: Re: [OpenIndiana-discuss] Raid type selection for large # of ssds
> 
> On Fri, 5 Oct 2012, Dan Swartzendruber wrote:
>> a 24-drive raidz2 is a really bad idea.  you will get one drive IOPs.  
>> you
> 
> Everyone who has commented thus far seems to have missed that this fellow is
> only using SSDs for his pool (no rotating rust) so drive seek time is not an
> issue.  It is still true that running more SSDs in parallel should improve
> available IOPS though.
> 
> Bob
> --
> Bob Friesenhahn
> bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
> GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
> 
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