Synology DS1621+ Which NVME SSD For Cache?

[Valo]

I've picked up a Synology DS1621+ for my new NAS on offer. I'm currently waiting to pickup some Seagate Exos drives on offer, hopefully around Easter time if I'm lucky.

I'm wanting to take advantage of the ability of the DS1621+ to have an SSD Cache. I'm just unsure what NVME SSD to use, does anyone have any recommendations?

 

[Valo]

If it's only connected via a 1 gigabit network, then the maximum transfer rate is about 125 MB/s so there's probably little benefit in getting anything much better than basic NVME drives such as a WD Blue for about £53 each in a 500Gb size.

https://www.overclockers.co.uk/wd-b...-solid-state-drive-wds500g3b0c-hd-588-wd.html

Yeah, it'll be connected to my 1 gigabit switch.

Depending on your use case. Cache may be a waste of time and money. I got the M2D18 dual SSD card and popped in a couple of SSD's. I disabled it a few months after installing it due to massive performance issues. Plex was horrific. Mine is mainly a just a Plex server though. Doesn't do much more other than surveillance station and a few apps.

I'm considering Plex but it's mainly file storage.

How much do you expect to write to the array per day? If it's little (<100GB per day), I'd say a PCIe 3 drive with a DRAM cache but with TLC (e.g. Samsung 970 Evo Plus, WD SN750), but if you plan to write significant amounts then you might need to get enterprise-grade SSDs.

It'll be less than 100GB day I'll be writing to the array. I'll keep my eyes peeled for some offers on the 970 Evo Plus (That's what I was looking at before posting). What would be the best to use two smaller NVME drives or just purchase a larger single drive?

 

[Valo]

Thanks for the advice. I've decided to try without an SSD Cache for now.

Finally managed to pickup some storage drives to actually build out my Synology.