m.2 2280 3.84/4TB with PLP for Synology Cache

[Nohbdy]

Looking for an NVMe cache drive for a Synology ds1823xs+ and beginning to wonder if such a drive exists. There are several 22110 options, but all the 2280 options I can find are consumer/prosumer focused and don't have power loss protection. Has anyone run across an enterprise drive at these capacities in 2280 format with PLP?

There are Synology's own drives, but they only go up to 800GB. Willing to deal with the complaints from DSM for the increased capacity.

 

[BlueFox]

Capacitors take up a lot of space, so they are seldom found on 2280 drives. I don't think you're going to find what you're looking for unfortunately. Could always get the M2D20 card and stick that in the PCIe slot as it will support a pair of 110mm drives.

 

[Nohbdy]

Capacitors take up a lot of space, so they are seldom found on 2280 drives. I don't think you're going to find what you're looking for unfortunately. Could always get the M2D20 card and stick that in the PCIe slot as it will support a pair of 110mm drives.

Didn't think of that since Synology doesn't list the M2D20 as supported for the ds1823xs+. However, after some quick googling, it looks like the card works with DSM out of the box anyway. That seems like a good option along with maybe some Samsung PM9A3 3.84TB drives.

 

[cowonmars]

Micron 7300 offers 960gb in 2280 form factor. I believe m.2 + plp limits 2280 to around 1tb, 1.92tb drives all seem to be 22110.

 

[VMman]

Why does it have to be so large if its only for caching? I'm not a Synology user.

If you can get away with a smaller 2280 m.2 then the Optane's (118gb) are tough to beat right now. No need for PLP since there isn't a dram cache.

 

[Nohbdy]

It's a pretty large array and is used as storage for a number of VMs. Current cache usage is close to 1TB. 3.84 TB is admittedly overkill, though the larger drives tend to come with higher TBW. If there was an m.2 optane in the 800-1000GB range, that would probably be ideal.

The Micron 7450 Max at 800GB looks interesting and has high enough TBW that it could be safely 100% allocated as cache. According to the spec sheets, the 7450 max is available in m.2 format up to 3.2TB, but I can't find any evidence that anything above 800GB actually exists in the market.

I also ran across the Transcend mte712p which is available in 2280 format up to 2TB with PLP and a decent TBW (1.97 DWPD for 3 years). It is targeted towards embedded devices, but looks like a good alternative to the 7450 (pro or max) at similar price points.