Re: [Ltsp-discuss] recommend a disk setup for LTSP install?

[David B. <ap...@gm...>]

On Tue, Mar 30, 2010 at 5:58 PM, john <lis...@gm...> wrote:

> Are  SSD write times comparable with SAS? I wasn't aware of that. I'll
> take a look.


Check this article, which directly compares SSDs with SAS and SATA arrays:

http://www.anandtech.com/show/2739/1

That article is a lot of pages, and if you look at all the SSD
articles on anandtech you could be busy for days, but these quotes
from the summary is it in a nutshell:

"We frankly see no reason any more to buy SAS or FC drives for
performance critical OLTP databases"

"these fast SLC drives make the limits of the current generation of
storage processors painfully clear."

"Once random access comes into play, you need two to three times more
SATA drives - and there are limits to how far you can improve
performance by adding spindles"

Basically, decent SSDs are faster than any spinning drive for
sequential, and way, way faster for anything random, as seek times and
latency are virtually eliminated. Terminal servers with lots of users
can fall victim quickly to random reads and writes, the exact arena
where SSDs really shine.

db