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From Nick Dimiduk <ndimi...@gmail.com>
Subject Re: RS disk capacity limits
Date Sun, 14 Dec 2014 01:37:10 GMT
Correct, you want more spindles/TB. Furthermore, you'll need RAM to use
that storage effectively. GB RAM/TB of disk will very depending on your
access patterns. 20 TB raw storage is about 6.6TB after replication. Even
with compressed BlockCache and a compression ratio of 0.3, it'll be
difficult to keep that much data hot.

On Friday, December 12, 2014, 张铎 <palomino219@gmail.com> wrote:

> I think 10 disks each 2TB is better.
> A disk can only seek about 50 times per second no matter it is 10TB or 2TB,
> so more disks means you can do more seeks and increase the random read
> write performance.
>
> 2014-12-13 9:04 GMT+08:00 Krishna <research800@gmail.com <javascript:;>>:
> >
> > Hi,
> >
> > Is there any logical/practical limit on HBase RS storage size?
> > Which works better for HBase - a region server with 10 disks that are
> each
> > 2 TB or 2 disks that are each 10TB?
> > I remember, one of the recommendations is to keep each disk on RS to be
> > less than 6 TB - is that correct?
> >
> > Thanks
> >
>

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