We didn’t find a measurable difference doing this on 5100s, ymmv.
It depends on the controller...
With chipset SATA and LSI 9200 HBA the difference is huge. I have some
evidence here: https://yourcmc.ru/wiki/Ceph_performance#Server_SSDs
With some controllers it may be not the case.
--
>> SATA: Micron 5100-5200-5300, Seagate Nytro 1351/1551 (don't forget to
>> disable their cache with hdparm -W 0)
We didn’t find a measurable difference doing this on 5100s, ymmv.
Depending on your use-case, CRUSH rules (EC vs R), etc. sub-DWPD models may be
fine for OSDs, but I suggest higher
Effectively performances are not so bad but they decrease a lot if you run
the same test with 2/3 instances at the same time.
With iscsi on an emc unity with sas disks, performances are a little more
high.
But they do not decrease so much when you run the same test with 2/3
instances at the same
Also, just for more diversity, Samsung has the 883 DCT and the 860 DCT models
as well.
Both less than 1 DWPD, but they are enterprise rated.
Reed
> On Jan 3, 2020, at 2:10 AM, Eneko Lacunza wrote:
>
> I'm sure you know also the following, but just in case:
> - Intel SATA D3-S4610 (I think
I'm sure you know also the following, but just in case:
- Intel SATA D3-S4610 (I think they're out of stock right now)
- Intel SATA D3-S4510 (I see stock of these right now)
El 27/12/19 a las 17:56, vita...@yourcmc.ru escribió:
SATA: Micron 5100-5200-5300, Seagate Nytro 1351/1551 (don't forget
