Radian RMS 200 and NVMe pool?

[lmiksche]

Hi everyone,

I have a dilema, I have got R630 server that came with the Radian RMS 200.
The plan is to use 4 NVMe drives Z1 or similar as storage and iSCSI target, possibly even running NVMe over C.E or TCP
Is the Radian of any use as cache or journal? Im a bit worried that it may actualy slow things down as the combined write/read speeds of the NVMes + the total IOPS may be greater then the Raians.

RMS DATA
https://www.radianmemory.com/wp-content/uploads/2016/07/RMS-200-Data-Sheet-ver-1-7.pdf
Samsung Drive Data:
https://download.semiconductor.samsung.com/resources/brochure/PM1733 NVMe SSD.pdf

 

[lmiksche]

Is there realy noone who can answer that question?

 

[i386]

I have some radian rms 200 ssds. They are beasts and even faster than first gen optane (pcie) for 1qd/1thread.

Looking at the specsheets of the samsung ssds the radian should be fast enough to keep up with the samsung ssds most of the time (unless you run a pcie 4.0 system with many concurrent random reads...)

 

[ano]

should work, probably wont see much gains though , shouldnt slow down, if you have the hw, its easy to tst

 

[lmiksche]

Mind they will work as RAID so on read the performance will be quadrupled. So far PCIe 3. Will do some testing I guess.

 

[gb00s]

RMS200/300 are far superior, specially considering you have the Gen3 version of the PM1733 only. I have these set up in a RAID1 mode as write cache only and never look back to Optane 900/905 or so. Even 4800X is just equal performance wise. I also don't have any temp issues as many noticed using RMS200.