sata DOM Supermicro vs Innodisk

[phier]

Hello,
is there any need to make a research which one is more reliable if any ,... or it doesn matter at all?

Thanks!

 

[phier]

also how is it possible to achieve mirrored pair of sata doms - with boards as x11ssl-f, or board has to support 2x SuperDOM?

 

[Patrick M. Hausen]

Supermicro have been super reliable. Not a single one failed so far. Oldest running for about 5 years now, 24x7.
Reallocated sectors all 0.

 

[Patrick M. Hausen]

SuperDOM only means the DOM can be powered via the SATA connector. Each Supermicro DOM comes with a tiny power cable and there should be at least one matching connector on the mainboard.

• 1 DOM in SuperDOM port without power cable
• 1 DOM in any SATA port with power cable

Some boards like the X10SDV-7TP4F do come with 2 SuperDOM connectors.

 

[phier]

@Patrick M. Hausen so much appreciate. Was thinking about

Supermicro Generic SMCMVN1 SATA DOM SSD DM016​

also is it possible or does it make a sense to mirror that DOM SSD to USB - to be able to boot in case usb/dom die.

looking to the MB spec supermicro x11ssl-f it seems that these are proper SATA,
8.2 SuperDOM with built-in power

so it means if i want to use SATA DOM then i will KILL one sata port (from total 6), correct?


thanks

 

[Patrick M. Hausen]

Mirroring SATA to USB: possible - yes. Making sense - no idea. I have stopped using USB for TrueNAS years ago. Simply too unreliable.

As for the board: 2 SuperDOM ports for SATA-DOMs, 4 additional SATA ports for regular disks/SSDs. Or 6 regular disks and no DOMs. The ports are just regular SATA with additional power for DOMs.

Depending on what you want to build ... I would consider:

• 2 SATA DOMs for booting
• 4 spinning disks
• 1 or 2 AOC-SLG3-2M PCIe card(s) for 2 or 4 additional SSDs

Nice home or SMB system.

Edit: quickly checked the board manual. Looks like the PCIe slots do nut support bifurcation. You can still use one PCIe/NVMe SSD per slot but not two.

 

[phier]

@Patrick M. Hausen
thanks

is that AOC-SLG3-2M PCIe card same as SAS3 expanders - see bellow, ie can u attach to it normal disk or ssd only?

SI SAS, SAS 9240 and SAS 9207 series, the IBM/Lenovo M1015/M1115 and the Dell H200 and H310. All of these, except for the LSI SAS 9211 and 9207, must be cross-flashed. All of these, except for the LSI SAS 9211 and 9207, must be cross-flashed.


wells seems its something different https://www.supermicro.com/en/products/accessories/addon/AOC-SLG3-2M2.php >M.2 NVMe SSD
so in that case isnt better idea to boot from 2x M.2 NVMe SSD sticked into AOC-SLG3-2M PCIe card and use all 6 ports for a proper drives?

 

[Patrick M. Hausen]

1. If you pick the X11 SSM-F instead of the X11 SSL-F, you get 6 regular SATA ports and two SuperDOM ports.
2. The AOC-SLG3-2M is more or less a PCIe riser card and you can use it for only a single disk with these boards. You would need a board that supports bifurcation to turn a PCIe x8 slot into two x4 slots to use two SSDs. And then you can place only M.2 NVMe SSDs on that card. Then again it's reasonably affordable and combined with "prosumer" SSDs like the Samsung 970 EVO Plus you get 2 SSDs with full speed in a single slot.

 

[phier]

i dont want to use any SATA on board for a boot as i have 6/8 hdds...
not clear... then can i use one NVMe SSD with the card AOC-SLG3-2M and boot from that?