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Date: Fri, 14 Dec 2007 09:47:59 -0800
From: "Chris Lu" <chris.lu@gmail.com>
To: java-user@lucene.apache.org, te@statsbiblioteket.dk
Subject: Re: Heads-up on SSD
In-Reply-To: <1197629949.3515.29.camel@PC990.sb.statsbiblioteket.dk>
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References: <1197629949.3515.29.camel@PC990.sb.statsbiblioteket.dk>

Toke, This is fantastic stuff! I always wanted to convince (rich)
customers to try SSD. Now it's more convincing!

I think the results will be more interesting for indexing, which has a
lot of file merges.

-- 
Chris Lu
-------------------------
Instant Scalable Full-Text Search On Any Database/Application
site: http://www.dbsight.net
demo: http://search.dbsight.com
Lucene Database Search in 3 minutes:
http://wiki.dbsight.com/index.php?title=Create_Lucene_Database_Search_in_3_minutes
DBSight customer (remain anonymous per request) got 2.6 Million Euro funding!


On Dec 14, 2007 2:59 AM, Toke Eskildsen <te@statsbiblioteket.dk> wrote:
> There's an interesting article on state-of-the-art setup with Mtron
> Solid State Drives at
> http://www.nextlevelhardware.com/storage/battleship/
> The concise version is that Mtron flash drives puts all traditional
> harddrives to shame and seems especially well suited for applications
> that performs a lot of seeks. No surprise there, but read the article
> for some eye-opening numbers.
>
> At The State and University Library in Denmark we've experimented with
> two Samsung SSDs vs. two 15.000 RPM traditional harddisks in RAID setup
> with our current Lucene index at about 30GB and logged queries from our
> users.
>
> For searches we can confirm that the SSDs are substantially faster,
> especially when the available amount of RAM for caching relative to the
> index size is small. A teaser-graph can be viewed at
> http://wiki.statsbiblioteket.dk/summa/Hardware
>
> Our test should not be seen as authoritative or even even representative
> for Lucene on SSDs in general, but it seems clear to us that users of
> Lucene-systems ought to look into SSDs if they haven't already done so.
>
>
>
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