On 05/01/2013 10:09 AM, Tom Hughes wrote:
On 01/05/13 08:40, Sarah Hoffmann wrote:
My knowledge on the hardware side is rather limited. Just take into
account that Nominatim is doing quite a bit of writing when in minutely
update mode and that you will need to start from scratch if the
data on the SSD is lost.
Our server is using Crucial RealSSD C300 drives, which I think are at
the enterprise end of the market.
Each is currently showing 8% of write capacity used after something
like 15 months of active use. I'm not sure if they were used somewhere
else before though as they are showing just under 20,000 hours powered
on (about 2 years 3 months) but we've only had our Nominatim server up
and running again since early last year.
Tom
For this you probably want the OCZ vector. It has very good specs.
If you're bold and like to live on the edge but care about bandwidth, I
would recommend going with PCI-e SSD cards. They beat the living
daylights out of their SATA brothers and sisters on performance.
Take a look at the specs from the Revodrive 3 X2
http://ocz.com/consumer/revodrive-3-x2-pcie-ssd There is one small
caveat, they don't promote it for linux, in fact they don't mention it
their OS support list, there's a reason too, this little gem smacks the
competition and they have a product position issue since it's so
insanely cheap for what you get.
But a well known internaut and gentoo contributer, robat2 on the OCZ
forums, has looked at it and now there is kernel support available. So
it will work. And on top, TRIM support is in the latest distro's so in
fact, linux is probably the only OS that fully supports this feature,
very important for you'r drive to stay healthy. (you'll end up with 4
different drives under linux).
If you buy 2 OCZ vector's and put them in raid0 it might come close to
what the Revodrive 3 can. There are some things that are a tad faster
on the Vector as compaired to the Revodrive, but price/performance I
don't think anything comes close to it.
So pay attention to the PCI-e versions of your SSD's. More of those are
hitting the markets nowadays.
Glenn
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