Performance pointers + cable

[Daf1]

Hi,

I'm getting 30MB/s +/- 10% write speed to my new ReadyNAS 104 RAID5.
From what I see here - that seems Ok, but thought I'd see if I can optimise stuff.

(RAID5, 4xWD 3TB Red disks, Unmanaged gigabit switch, 5m Cat6 cable to NAS, 40cm Cat5e to PC, Win7, Drag+drop to share)

Performance
Is 30MB/s what I should be expecting for the above setup ?

Performance tips
Any tips ? E.g. I don't know what Jumbo Frames is.
Is there a resource for general Performance tips ?
The page linked to here often is giving a Not Found 404 error : http://www.readynas.com/?p=310

Cables
Is it worth getting a Cat6 cable for PC->switch ?
Will that make much of a difference ?

TIA

[StephenB]

Cat 5e is fine for gigabit, esp. since you are only talking 40 cm.

Can you try this tool and report back on its performance? http://www.808.dk/?code-csharp-nas-performance
You'll need to map a share to a drive letter to use it.

Also, what switch do you have?

SmallNetbuilder.com tested the RN104 at ~85 MB/sec read and ~40 MB/sec write. http://www.smallnetbuilder.com/nas/nas- ... l=&start=1

[dishmagic66]

To give a indication:
Overhere a RN104 on 6.1.4 with 4 X ST2000M001 in raid 5
Test done from Dell XPS I5 notebook. 10m cat5/E, TP-Link TL-SG108, 3m cat5/E, TP-link TL-SG108, 1m cat5/e, Readynas RN104

NAS performance tester 1.4 http://www.808.dk/?nastester
Running warmup...
Running a 400MB file write on drive U: 5 times...
Iteration 1: 32,49 MB/sec
Iteration 2: 38,11 MB/sec
Iteration 3: 34,36 MB/sec
Iteration 4: 37,91 MB/sec
Iteration 5: 36,88 MB/sec
------------------------------
Average (W): 35,95 MB/sec
------------------------------
Running a 400MB file read on drive U: 5 times...
Iteration 1: 61,00 MB/sec
Iteration 2: 66,07 MB/sec
Iteration 3: 63,44 MB/sec
Iteration 4: 64,26 MB/sec
Iteration 5: 67,60 MB/sec
------------------------------
Average (R): 64,47 MB/sec
------------------------------

[StephenB]

Ok. This is quite a bit better than ~30 MB/s

Does the Dell laptop have an SSD drive?

[dishmagic66]

No it has a 2.5 inch 750GB 7200rpm from WD
It does 99MB/s read and 98MB/s write tested with Crystal diskmark

[dishmagic66]

LAN test lite from totusoft gives similar results.
write read
Packet length : 4,000,000,000 4,000,000,000
Time to complete: 116.3184707 55.9923386
Bytes per second: 34,388,348 71,438,345
Bits per second : 275,106,784 571,506,760

[StephenB]

ok. Your speeds are slightly slower than what smallnetbuilder got, but they are testing with a desktop platform that is faster than the laptop.

Personally I would leave it at that - though if you want to try enabling jumbo frames, that would be a next step.