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.

 

[Halfwalker]

Sorry to wake an old thread ... Has anyone had issues getting the RMS-200 to even show up ?

Picked one up on fleabay the other day, and it looks fine to the naked eye.

I put it in a Supermicro X10DRH-CT motherboard - fan spins up fine, but device never shows up at all. Not in `lcpsi` nor in `nvme list`.

Next to try will be in a very similar board - X10DRH-CLN4, but I don't hold much hope. I saw someone else in the TrueNAS forums having a similar issue with an X11 board

Radian RMS-200/300 supported?

Hi, I wanted to set up a new storage box with TrueNAS SCALE using a used Supermicro X11DPH-T mainboard and an Radian RMS-200 (or 300) card. But for whatever reason the Radian RMS card doesn't show up at all. It neither appears in lspci nor is it listed by dmidecode - and of course it doesn't...

www.truenas.com

 

[i386]

I have 3 and they worked with x10sdv, x10srl, h12ssl and m12swa boards ._.
I think you have a broken unit...

 

[Halfwalker]

OK, so it does show up in lspci output - I was looking for "Radian"
02:00.0 Non-Volatile memory controller: Microsemi / PMC / IDT F32P08xG3 [PCIe boot mode]

But what device does it use ? There are no /dev/nv... devices, and nvme list shows nothing ...

lspci -nk does show that it should be using the nvme driver

02:00.0 0108: 111d:80cf                                 
        Kernel modules: nvme

and the nvme modules are loaded

nvme                   61440  0
nvme_auth              28672  1 nvme_core
nvme_core             208896  3 nvme_tcp,nvme,nvme_fabrics
nvme_fabrics           36864  1 nvme_tcp
nvme_keyring           20480  1 nvme_tcp
nvme_tcp               53248  0