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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