[Beowulf] SSD performance

[John Hearns]

I forgot the main purpose of the Internet. My bad.
>You don't say for which purpose the SSDs are being used.
Storing cat pics?

On 22 July 2018 at 07:41, John Hearns <hearnsj at googlemail.com> wrote:

> You don't say for which purpose the SSDs are being used.
> In your laptop?
> As system disks in HPC compute nodes?
> Journalling drives in a parallel filesystem?
> Data storage drives in a parallel filesystem?
>
> Over on the CEPH mailing list there are regular topics on choice of SSDs.
> I would advise going over there and asking the same question.
>
> Also you don't say how they are failing.
> Are these consumer grade drives or data centre grade drives?
> Consumer drives have much, much lower 'drive writes per day'
>
> Two jobs ago I would have said the go-to data centre drives were Intel.
>
> Also one comment specific to HPC. I found that SSD drives dont 'get sick'
> like spinning drives,
> ie you dont see syslog messages about blocks failing to be read/written.
> They just fail.
> Also two jobs ago I though that SMART checks were not picking up failing
> SSDs.
> I believe that you can monitor them if you choose the correct counters.
> Anyone?
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> On 22 July 2018 at 07:32, Jonathan Aquilina <jaquilina at eagleeyet.net>
> wrote:
>
>> What Ones are you currently getting?
>>
>> Sent from my iPhone
>>
>> > On 22 Jul 2018, at 05:42, Jonathan Engwall <
>> engwalljonathanthereal at gmail.com> wrote:
>> >
>> > I am not happy with the SSDs I am using. I am buying another sad every
>> couple weeks.
>> > Fast sure, but my productivity right now is zero.
>> > Are there any recommendations on reliable ssd brands?
>> > Jonathan Engwall
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