SSDs

[Jason Spatafore]

The "tipping points" I would look at is the fact that SSD's, for around
the same price and capacity as enterprise level drives (would be
debatable in higher capacity areas where enterprise drives rule):

1. Put out less heat. (Usually 1/2 a spinner)
2. Have no shock weakness (you can shake them while they're performing
data operations if you would like)
3. Use less power. (Usually 1/2 a spinner)
4. Produce no noise. (Yep, for that quiet web server in your living room!)

For an always on server, two of those have value. For placement of the
server, the noise definitely holds a value if you share the room.

I would still suggest you use spinners for data storage (spinning backup
and file stores, even place /home on) but use SSD for the read
performance (website, O/S...basically /, /tmp, and /var)

Basically, setups I always see are:

RAID 1 for O/S, web, and database using 2 x SSD's
RAID 1 on 2 x non-enterprise spinners for storage. (Backups of the
database, home directories, etc)


On 04/02/2013 02:55 PM, Lisa Kachold wrote:
> Sure Paul!  Why not.  Under linux a SSD drive is as fast as a hardware
> controlled RAID array.  
>
> For every endeavor your data storage is finite; drives will wear out
> at some point!
>
>
> On Tue, Apr 2, 2013 at 2:21 PM, keith smith <klsmith2020 at yahoo.com
> <mailto:klsmith2020 at yahoo.com>> wrote:
>
>
>     I'm almost sold.  Are you saying it is ok, or even recommended to
>     build a web server with SSD's only?
>
>
>
>     ------------------------
>     Keith Smith
>
>     --- On *Tue, 4/2/13, Paul Mooring /<paul at opscode.com
>     <mailto:paul at opscode.com>>/* wrote:
>
>
>         From: Paul Mooring <paul at opscode.com <mailto:paul at opscode.com>>
>         Subject: Re: SSDs
>
>         To: "Main PLUG discussion list"
>         <plug-discuss at lists.phxlinux.org
>         <mailto:plug-discuss at lists.phxlinux.org>>
>         Date: Tuesday, April 2, 2013, 2:08 PM
>
>
>         http://www.youtube.com/watch?v=H7PJ1oeEyGg
>         -- 
>         Paul Mooring
>         Systems Engineer and Customer Advocate
>
>         www.opscode.com <http://www.opscode.com>
>
>         From: Lisa Kachold <lisakachold at obnosis.com
>         <http://mc/compose?to=lisakachold@obnosis.com>>
>         Reply-To: Main PLUG discussion list
>         <plug-discuss at lists.phxlinux.org
>         <http://mc/compose?to=plug-discuss@lists.phxlinux.org>>
>         Date: Tuesday, April 2, 2013 1:24 PM
>         To: Main PLUG discussion list <plug-discuss at lists.phxlinux.org
>         <http://mc/compose?to=plug-discuss@lists.phxlinux.org>>
>         Subject: Re: SSDs
>
>         I have also found that in deference to their claims some of
>         the SSDs are SLOWER than regular enterprise drives.  
>         I believe this new technology leaves a lot to be desired.
>
>
>         On Tue, Apr 2, 2013 at 12:27 PM, Derek Trotter
>         <expat.arizonan at gmail.com
>         <http://mc/compose?to=expat.arizonan@gmail.com>> wrote:
>
>             I have a question about SSDs.  I've read that they like
>             the USB thumb drives can be written to a certain number of
>             times before they fail.  What is the expected lifetime of
>             an SSD?  They're terribly expensive if they're only going
>             to last 2 or 3 years.
>
>             Derek
>
>             -- 
>             "I get my copy of the daily paper, look at the obituaries
>             page, and if I'm not there, I carry on as usual."
>
>             Patrick Moore
>
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