Hi David,
Yes you are right, I should have worded it as "no performance benefit".
There are certainly benefits in regards to density.
We could have gone for 1x P3700 per 12 Spinners, but went 1x P3700 per 6
spinners due to fear of losing 12 OSD's at once.
Losing 12 OSD's at once may or may not be
Further clarification, 12:1 with SATA spinners as the OSD data drives.
On Tue, Jul 7, 2015 at 9:11 AM, David Burley
wrote:
> There is at least one benefit, you can go more dense. In our testing of
> real workloads, you can get a 12:1 OSD to Journal drive ratio (or even
> higher) using the P3700.
There is at least one benefit, you can go more dense. In our testing of
real workloads, you can get a 12:1 OSD to Journal drive ratio (or even
higher) using the P3700. This assumes you are willing to accept the impact
of losing 12 OSDs when a journal croaks.
On Tue, Jul 7, 2015 at 8:33 AM, Andrew
Hello,
On Wed, 8 Jul 2015 00:33:59 +1200 Andrew Thrift wrote:
> We are running NVMe Intel P3700's as journals for about 8 months now.
> 1x P3700 per 6x OSD.
>
> So far they have been reliable.
>
> We are using S3700, S3710 and P3700 as journals and there is _currently_
> no real benefit of the
We are running NVMe Intel P3700's as journals for about 8 months now.1x
P3700 per 6x OSD.
So far they have been reliable.
We are using S3700, S3710 and P3700 as journals and there is _currently_ no
real benefit of the P3700 over the SATA units as journals for Ceph.
Regards,
Andrew
On Tu
Hello,
On Tue, 7 Jul 2015 09:51:56 + Van Leeuwen, Robert wrote:
> > I'm wondering if anyone is using NVME SSDs for journals?
> > Intel 750 series 400GB NVME SSD offers good performance and price in
> > comparison to let say Intel S3700 400GB.
> > http://ark.intel.com/compare/71915,86740 My c
> I'm wondering if anyone is using NVME SSDs for journals?
> Intel 750 series 400GB NVME SSD offers good performance and price in
> comparison to let say Intel S3700 400GB.
> http://ark.intel.com/compare/71915,86740
> My concern would be MTBF / TBW which is only 1.2M hours and 70GB per day for
>
Hi,
I'm wondering if anyone is using NVME SSDs for journals?
Intel 750 series 400GB NVME SSD offers good performance and price in
comparison to let say Intel S3700 400GB.
http://ark.intel.com/compare/71915,86740
My concern would be MTBF / TBW which is only 1.2M hours and 70GB per day
for 5yrs o
