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From "Chris Lu" <>
Subject Re: Heads-up on SSD
Date Fri, 14 Dec 2007 17:47:59 GMT
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
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 <> wrote:
> There's an interesting article on state-of-the-art setup with Mtron
> Solid State Drives at
> 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
> 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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