[Dovecot] SSD drives are really fast running Dovecot

Robert Brockway robert at timetraveller.org
Thu Jan 13 19:37:12 EET 2011


On Wed, 12 Jan 2011, Timo Sirainen wrote:

> On 12.1.2011, at 21.15, Matt wrote:
>
>> I thought about doing this on my email server since its troubles are
>> mostly disk I/O saturation but I was concerned about reliability.
>> Have heard that after so many read/writes SSD will go bad.
>
> There's no need to worry about that in any modern drives.

Hi Timo.  Wear levelling often isn't as good as is claimed on the box. 
Often wear levelling is only across subsets of the SSD not across the 
entire device.

I've seen several SSD drives fail in production after about 12 months of 
use, and this in low-write environments (eg, I log syslog to a remote 
syslog server).   I'm refraining from deploying SSD for mail servers for 
now, much as I would love to.

Rob

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