NASLite Network Attached Storage

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Task-specific simplicity with low hardware requirements.
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PostPosted: Wed Feb 27, 2013 4:01 am 
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Joined: Sat Jun 02, 2007 2:45 am
Posts: 485
Location: France
Hi

As I have bought an SSD laptop (very very fast :) ), I decided to put an SSD drive in my NL server. Install, format etc went very nicely.

The test results are really not what I expected. I get almost the same results with the HDD as SSD.

The SSD drive mounted as drive S:

Image

The HDD drive mounted as drive R:

Image

The same test on the local HDD drive c:

Image

The computers are on a Gigabit LAN and the testing software was CrystalDiskMarkk running on a Win7 Intel i3 4Go RAM computer.

I suppose the LAN is the bottleneck but I can't see why and where.

Any ideas

Robby


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PostPosted: Wed Feb 27, 2013 11:48 am 
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Joined: Sun Apr 02, 2006 9:05 pm
Posts: 1688
Location: Up State NY in the USA!!!!
You are getting numbers that are limited by the network. The theoretical limit is 125MB/sec but with the overhead of the headers, error correction and lost packets you can expect to see in the 80 to 90MB/sec range for a NAS implementation on gigabit.

The numbers vary because of different factors like the size of packets and the types as well as the overall size of the transfer since the Cache function in NASLite is far less a factor when read/writes are to a SSD.

Good numbers none the less though.

Mike


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PostPosted: Thu Feb 28, 2013 3:10 am 
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Joined: Sat Jun 02, 2007 2:45 am
Posts: 485
Location: France
Thanks a lot Mike

I had forgotten the 125MB/sec limit :( Sometimes, I really am a bum...

Time to disassemble the laptop and put in a bigger SSD ;)

Robby


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PostPosted: Thu Feb 28, 2013 7:00 pm 
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Joined: Sun Apr 02, 2006 9:05 pm
Posts: 1688
Location: Up State NY in the USA!!!!
As a general rule most of us that have bench marked our NAS have used diskwriggler. It seems to return consistent numbers from test to test as well as doing a fair job of exercising the NAS to it's limits.

Here is a screen capture of a NAS I built for a friend a while back

Image

The string at the top generates a simulated NTSC video stream of large enough size fill the NAS write cache buffer test the actual write speed of the drive/s. In the above case it was four 5400RPM Maxstor 500GB drives in a RAID5 array on a 3Ware 9500 card. As you can see the numbers are not to bad at all.

Mike


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PostPosted: Fri Mar 08, 2013 2:47 pm 
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Joined: Sat Jun 02, 2007 2:45 am
Posts: 485
Location: France
Hi Mike

Yes I know and have used diskWriggler. The "problem" I find with it is that it is like testing a car on a straight line, it will give me the max speed but not what the car will be like in real life conditions.

Your read and write speeds are great. If I remember well, in my case, the read speeds were much lower than the write speeds. I'll test next week and will come with the results.

Have a nice WE.

Robby


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