It appears we both replied at the same time so I didn’t actually see your reply above my last when I posted it.
OK, using unRAID changes my assessment of the speed of the array. Given the limited knowledge I’ve been able to glean about how it really works, you will not get the raw performance of a traditional array, and especially not for files freshly written (such as the transcode temp). So storing the transcode in a location with faster access could see some benefit.
As far as the number of parity disks for the number of disks, as long as you understand the risks, noted. It’s really a question of the tradeoff of data security vs costs and it sounds like you’ve already done that analysis.
As per the database, since changes to it are committed to disk in transactions, such as play progress, it will be faster on a faster disk. As far as disk access goes, it is quite easily the file with the most access. You’ll have to make your own assessment as to how much speed you need.
BTW, 10 streams is not going to saturate a 10Gbps connection. It’s likely to only saturate a 1Gbps connection only momentarily in bursts. Media these days, transcoded or not, rarely exceeds 40Mbps.
@buba013 said:
no i didn’t see any change between them that I noticed ,
but my SSD/M.2 systems are high spec’s and all PMS are running on Centos 7 for me .
only thing I notice was the change from Spindle to SDD that was huge speed increase browsing the catalog
until your GUI requires more than 400MB’s read/writes an good fast SSD will be fine .
If you have the cash to burn
Ah ok. I was looking for some real world experience with it. Have you noticed any slowness with multiple streams transcoding to your non m.2 SSDs?
no i wouldn’t on this. system Internal Server: E5 2697v3 M.2 20k passmark
my i7 4790S runs 5 streams fine SSD (9k passmark) ( this is the lowest spec i would use unless it was a VPS )
but i have connected and running most of the day . 2/3 ipads ,1 iphone(remote) 2 x apple tv 4 and nvida shield running all the time .
only issue i have ever seen on this system is network related
it also depends on the SSD you buy .
So for somethi ng to do i just rebuilt two Plex servers
1 with NVMe
1 with M.2 ssd
1 with sata ssd 850 pro
the only real difference I saw was the scanning of meta data for a new setup, NVMe took about 1 1/2 hours quicker and I could play 3 streams while doing a Fresh new scan.
The M.2 and the 850 pro were about the same .
It is noticeable just only not really worth the cash but hay why not if you can .
I can flick over 2k movies in a few seconds and it is smooth as silk
.