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.
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On Tue, Jul 7, 2015 at 8:33 AM, Andrew Thrift <andrew@xxxxxxxxxxxxxxxxx> 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 P3700 over the SATA units as journals for Ceph.Regards,
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