Yes there ARE write limits to SSDs. Look at the 'drive writes per day' figure.
On 22 July 2018 at 12:30, John Hearns <hear...@googlemail.com> wrote: > Well if you are looking for boot drives.. I would seriously advice looking > at SATA DOMs > These are solid state drives which plug into the SATA socket on the > motherboard. > They are fantastic for storage servers - you can use all of the drive > slots for storage or journaling drives. > > I would really like to build a cluster sometime with SATA DOM on the > compute nodes too. > > > On 22 July 2018 at 09:07, Jonathan Aquilina <jaquil...@eagleeyet.net> > wrote: > >> Also another thing I think worth asking is if these ssd‘s are standard >> Sata drives or m.2 drives >> >> Sent from my iPhone >> >> On 22 Jul 2018, at 08:02, Jonathan Engwall <engwalljonathanthereal@gmail. >> com> wrote: >> >> Does 345 power_on_hours seem like "old age" >> Not happy. Thanks for the CEPH tip. >> >> On Sat, Jul 21, 2018, 11:30 PM Jonathan Engwall < >> engwalljonathanther...@gmail.com> wrote: >> >>> I built up a couple r610 dells with the idea that they would boot from >>> ssd through a usb external drive. The cheap external drives might be the >>> real culprits. I have to think about that. >>> The latest drive to fail was a Kingston and I think it was new. >>> There is a write limit on some ssds? >>> Lately I have been building trying to crosscompile the cray xmp >>> simulator. It has thousands of targets. But earlier this week afterI >>> installed openvswitch was when the trouble began. >>> Jonathan Engwall >>> >>> On Sat, Jul 21, 2018, 10:44 PM John Hearns via Beowulf < >>> beowulf@beowulf.org> wrote: >>> >>>> 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 <hear...@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? >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> On 22 July 2018 at 07:32, Jonathan Aquilina <jaquil...@eagleeyet.net> >>>>> wrote: >>>>> >>>>>> What Ones are you currently getting? >>>>>> >>>>>> Sent from my iPhone >>>>>> >>>>>> > On 22 Jul 2018, at 05:42, Jonathan Engwall < >>>>>> engwalljonathanther...@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 >>>>>> > _______________________________________________ >>>>>> > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin >>>>>> Computing >>>>>> > To change your subscription (digest mode or unsubscribe) visit >>>>>> http://www.beowulf.org/mailman/listinfo/beowulf >>>>>> >>>>>> _______________________________________________ >>>>>> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin >>>>>> Computing >>>>>> To change your subscription (digest mode or unsubscribe) visit >>>>>> http://www.beowulf.org/mailman/listinfo/beowulf >>>>>> >>>>> >>>>> >>>> _______________________________________________ >>>> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin >>>> Computing >>>> To change your subscription (digest mode or unsubscribe) visit >>>> http://www.beowulf.org/mailman/listinfo/beowulf >>>> >>> _______________________________________________ >> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf >> >> >
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