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Subject: Re: SSD Experience (on developer machine)
From: Paul Libbrecht <paul@hoplahup.net>
In-Reply-To: <1314112311.3772.227.camel@te-prime>
Date: Tue, 23 Aug 2011 17:20:21 +0200
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To: java-user@lucene.apache.org

Funnily, I had such an experience: an SSD on the laptop of the brand =
SanDisk, guaranteed for 80 TB of writes.
Well, I had it twice changed under guarantee. Then the shop provided me =
an OCZ.
Maybe that lasts longer... I'm still in guarantee.

paul


Le 23 ao=FBt 2011 =E0 17:11, Toke Eskildsen a =E9crit :

> On Tue, 2011-08-23 at 16:10 +0200, Federico Fissore wrote:
>=20
> [Toke: Re-writes is not a problem now]
>> Maybe this still is a point, thinking at how easy is today to fill =
your=20
>> local storage: for example, a "common" user will store video files.
>=20
> It is only a problem if the SSD is stored to the brim (and don't have
> hidden cells to counter the problem). If you store to the brim, you =
will
> have problems working actively with the device - temporary files,
> logging and whatnot tends to require that a non-trivial amount of
> storage is free. If you are not working actively with the device, the
> wear on the cells is not a problem. This brings us back to my initial
> point: Yes, you can construct cases where there will be problems. But
> they tend to be artificial:
>=20
> Let's say you have a drive with just 5GB left. Let's say that the =
cells
> can handle 10,000 writes. Doing constant rewrites of the 5GB gives you
> 10,000 * 5GB =3D 50TB before the drive gives up. I asked my drive =
about my
> daily write average some time ago. It was 13GB/day. With that =
scenario,
> the drive would live 10+ years.
>=20
> Admittedly this is just back-of-the-envelope and it ignores a lot of
> factors, but it does provides an idea of the amount of punishment they
> can take.


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