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From Brandon Williams <dri...@gmail.com>
Subject Re: Cassandra and disk space
Date Fri, 10 Dec 2010 00:28:02 GMT
On Thu, Dec 9, 2010 at 6:20 PM, Rustam Aliyev <rustam@code.az> wrote:

> Also, I noticed that you can specify multiple data file directories located
> on different disks. Let's say if I have machine with 4 x 500GB drives, what
> would be the difference between following 2 setups:
>
>    1. each drive mounted separately and has data file dirs on it (so 4x
>    data file dirs)
>    2. disks are in RAID0 and mounted as one drive with one data folder on
>    it
>
> In other words, does splitting data folder into smaller ones bring any
> performance or stability advantages?
>

It brings disadvantages.  Your largest CF will be limited to the size of
your smallest drive, and you won't be using them in parallel when
compacting.  RAID0 is the better option.

-Brandon

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