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Date: Sat, 16 Nov 2013 17:05:39 +0100
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 <CAHwsXY=5bU7uxMo8GP1XkKiu7FN+ahNMCJ2Mi1VNy07dtFoHjg@mail.gmail.com>
Subject: Re: Commit log on USB flash disk?
From: Philippe <watcherfr@gmail.com>
To: user@cassandra.apache.org
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Hi david, we tried it two years ago and the performance of the USB stick
was so dismal we stopped.
Cheers
 Le 16 nov. 2013 15:13, "David Tinker" <david.tinker@gmail.com> a =E9crit :

> Our hosting provider has a cost effective server with 2 x 4TB disks
> with a 16G (or 64G) USB thumb drive option. Would it make sense to put
> the Cassandra commit log on the USB thumb disk and use RAID0 to use
> both 4TB disks for data (and Ubuntu 12.04)?
>
> Anyone know how long USB flash disks last when use for a write heavy
> workload like this?
>
> Please tell me if this is a really bad idea.
>
> Our alternative is to use one 4TB disk for commit log and one for
> data. Of course this will give us only half the space.
>
> Thanks
> David
>

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<p dir=3D"ltr">Hi david, we tried it two years ago and the performance of t=
he USB stick was so dismal we stopped.<br>
Cheers<br>
</p>
<div class=3D"gmail_quote">Le 16 nov. 2013 15:13, &quot;David Tinker&quot; =
&lt;<a href=3D"mailto:david.tinker@gmail.com">david.tinker@gmail.com</a>&gt=
; a =E9crit :<br type=3D"attribution"><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Our hosting provider has a cost effective server with 2 x 4TB disks<br>
with a 16G (or 64G) USB thumb drive option. Would it make sense to put<br>
the Cassandra commit log on the USB thumb disk and use RAID0 to use<br>
both 4TB disks for data (and Ubuntu 12.04)?<br>
<br>
Anyone know how long USB flash disks last when use for a write heavy<br>
workload like this?<br>
<br>
Please tell me if this is a really bad idea.<br>
<br>
Our alternative is to use one 4TB disk for commit log and one for<br>
data. Of course this will give us only half the space.<br>
<br>
Thanks<br>
David<br>
</blockquote></div>

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