SSDs

Stephen cryptworks at gmail.com
Sat Apr 20 12:53:52 MST 2013


there is no cylinder alignment really in a SSD anymore...


On Sat, Apr 20, 2013 at 12:18 PM, Michael Butash <michael at butash.net> wrote:

> So I bought a samsung 840, I'll be using it on a single-disk system,
> requiring encryption (luks), and lvm/btrfs.  Might actually try btrfs
> finally now, but this is for work.  Just curious your opinion about the
> firmware side to expect these days losing trim support with fs layers, but
> relying on built-in firmware auto-leveling.
>
> Most of what Lisa suggested to do I normally do already, I just still do
> manual alignment of cylindars of the disk for flash geometry (or plan to).
>  Is that even needed still for non-gpt installs (like ubuntu)?
>
> Longevity seems almost a crapshoot with ssd's at times, so just curious to
> know what enterprise storage systems use on the back end with ssd to keep
> them from dying with layers of raid and such.
>
> I did buy the samsung 840 "pro" disk, just curious what makes it so pro vs
> cheaper 840 (~$50 diff).  Since single disk, I'm hoping it holds up longer.
>
> Thanks in advance!
>
> -mb
>
>
> On 04/02/2013 02:05 PM, Alan Dayley wrote:
>
>> An SSD from a well known manufacturer will last longer and be faster
>> than any rotating hard drive. The controllers and firmware in the drive
>> are designed to compensate for wear-out problems. Buy something from
>> Intel, Samsung, OCZ or STEC and you will be just fine.
>>
>> (I was a firmware engineer for an SSD company for 11.9 years. I don't
>> have time right now to give a detailed answer. Just trust me. ;-) )
>>
>> Alan
>>
>>  ------------------------------**---------------------
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-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen
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