SSD Volume and HDD Volume on same NAS

[Robbie]

Are their any issues running a pure SSD volume and a pure HDD volume on the same NAS, or will the presence of an HDD volume drag the SSD volume down to spinning rust speed?

Eg:
Storage Pool 1 / Volume 1 = SSD-only array
Storage Pool 2 / Volume 2 = HDD-only array

 

[Rusty]

It will be fine. Personally I don’t mix ssd and hdds in the same nas just yet but I don’t see any problems. Still most mid range nas will not utilize the full speed of the ssds but it will still be fast

 

[jeyare]

no way to utilize a performance of the single HDD by single 1Gbps ethernet only. Then it doesn’t matter if you will use for such operation SSD or HDD, there is still max. 125MB/s throughput only at the Ethernet level. Frequently under 80MB/s, what is the performance of old grandpa with SATA1 bus.

 

[Robbie]

It will be fine. Personally I don’t mix ssd and hdds in the same nas just yet but I don’t see any problems. Still most mid range nas will not utilize the full speed of the ssds but it will still be fast

Thanks Rusty and it should only be for a while. One of my NASs died and is the way of these things in covid times it just happens to my off-site unit.

My plan is combine my current on-site 5-bay (SSD-only array) and a 2-bay (HDDs) into a single 8-bay so I can release the 5-bay to serve as the off-site replacement with HDDs fitted. Would have been easy in normal times.

I've been running an SSD-only NAS for a couple of years now, so familiar with the performance etc. My other NASs will remain on HDDs for the foreseeable future though as I only need one high-performance array.

 

[Rusty]

My plan is

Sounds solid!