Performance!


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I've been running Unraid now for several years using enterprise hardware, and recently bought a new (old) server for archiving purposes which is 2 gen up on what I already had.

 

I was expecting some major speed improvements, but in reality it's not much faster at read/write speeds.  On both machines (1 x HP Proliant DL180 G6, 1 x HP Proliant DL380e G8) both running SAS 7.2k drives, on my main machine I have 2 x parity 1 x cache, 9 x SAS drives, and the array is Encrypted, and 1 x Parity, 10 x SAS drives on the archive machine, not encrypted.  I have dual 1GB network cables for both machines, running in a Gigabit switch, again enterprise grade.

 

On average I get around 80MB/s read/write speeds on an individual drive when writing to the main array on the main machine, but it can reach 1GB/s reading for parity across the entire array, so I know it's not bottlenecking apart from individual drive writes.

 

Have I got a major issue, or have I just got a config problem?  I read others getting 600MB/s or more!!

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  • 2 weeks later...
On 2/16/2021 at 1:00 PM, strike said:

No, not massive, only 125 MB/s, that is top speed for an individual disk on an gigabit network. If you don't go over the network you will get max 200-250 maybe on an 7200 rpm spindle.

New technology is needed to increase this significantly. Seagate have launched MACH.2, but no word about Linux support. 

Edited by frodr
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