Hi,
I have just expand our ceph-cluster (7 nodes) with one 8TB HGST (change
from 4TB to 8TB) on each node (and 11 4TB HGST).
But I have set the primary affinity to 0 for the 8 TB-disks... in this
case my performance values are not 8-TB-disk related.
Udo
On 08.07.2015 02:28, Blair Bethwaite wrote:
On 13 July 2015 at 21:36, Emmanuel Florac wrote:
> I've benchmarked it and found it has about exactly the same performance
> profile as the He6. Compared to the Seagate 6TB it draws much less
> power (almost half), and that's the main selling point IMO, with
> durability.
That's consistent with t
Le Wed, 8 Jul 2015 10:28:17 +1000
Blair Bethwaite écrivait:
> Does anyone have any experience with the newish HGST He8 8TB Helium
> filled HDDs?
I've benchmarked it and found it has about exactly the same performance
profile as the He6. Compared to the Seagate 6TB it draws much less
power (almo
Hey Christian,
Thanks, I haven't caught up with my ceph-users backlog from last week
yet so hadn't noticed that thread (SMR drives are something I was
thinking about for a DR cluster and long term archival pool behind
rgw). But note that the He8 drives are not SMR.
Cheers,
On 8 July 2015 at 11:0
Re-added list.
On Wed, 8 Jul 2015 11:12:51 +1000 Nigel Williams wrote:
> On Wed, Jul 8, 2015 at 11:01 AM, Christian Balzer wrote:
> > In short SMR HDDs seem to be a bad match for Ceph or any random I/O.
>
> The He8 isn't shingled though, it is a PMR drive like the He6.
>
Argh!
That's what you
On Wed, 8 Jul 2015 10:28:17 +1000 Blair Bethwaite wrote:
> Hi folks,
>
> Does anyone have any experience with the newish HGST He8 8TB Helium
> filled HDDs? Storagereview looked at them here:
> http://www.storagereview.com/hgst_ultrastar_helium_he8_8tb_enterprise_hard_drive_review.
> I'm torn as t
Hi folks,
Does anyone have any experience with the newish HGST He8 8TB Helium
filled HDDs? Storagereview looked at them here:
http://www.storagereview.com/hgst_ultrastar_helium_he8_8tb_enterprise_hard_drive_review.
I'm torn as to the lower read performance shown there than e.g. the
He6 or Seagate
