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Author Topic: What kind of performance should I expect  (Read 4941 times)

coleman

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What kind of performance should I expect
« on: January 30, 2010, 12:23:44 PM »

Hello,

I've had a DNS-343 for a little under a year now, and while I've been happy with it's capabilities I've been a little underwhelmed by the performance.  That said, I'm not sure that I have a good handle on what I should reasonably expect.  Reviews I read prior to purchasing made me think that it would do a little better then what I've been getting.

My home network is based around a single 16 port 3Com GigE unmanaged switch.  Cables to the hosts are call Cat 5E or Cat6, pre-made.  Jumbo packets are not currently enabled on any hosts.
The NAS is running 1.03, but no funplug or anything. The NAS has 4 1.5GB disks in it, formatted ext2, each disk is running individually.  Both my laptop and desktop are Windows 7 x64 machines.  The desktop disk is actually one I replaced in the NAS with a larger disk.

I did a test today copying a large file (~4.4GB) around:
SourceDestTime
NASLaptop15m 35s
LaptopNAS6m 58s
LaptopDesktop2m 6s
DesktopLaptop1m 50s

Is that just what I should expect?
Thank you!

Edit:Not doing JBOD or RAID.
« Last Edit: January 30, 2010, 12:33:21 PM by coleman »
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JavaLawyer

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Re: What kind of performance should I expect
« Reply #1 on: January 30, 2010, 01:40:09 PM »

My DNS-343 is configured identically to yours except I'm using 2TB HDDs.  A similarly sized file transfer typically takes ~8 minutes (NAS -> PC) and ~11 minutes (PC -> NAS).  Network configurations aside, the HDD spin rates will also impact your transfer speeds.
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coleman

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Re: What kind of performance should I expect
« Reply #2 on: January 30, 2010, 06:47:17 PM »

Well 3 of the 4 are 7200 RPM disks.  One is a new WD, one of the green ones, but that's not the one I benchmarked.  And I know the 3 7200s should be at least as fast as the disk that's in the desktop, but they aren't even close.  Anyway, 4MB/sec would be pathetic for a modern disk, if that's all it could manage.

I would understand more if I had a bunch of RAID overhead, but since I'm not doing that I'm a little surprised that it's as slow as it is.  It's got me contemplating building a WHS machine or putting a file server together again, which is unfortunate, as I wanted a NAS to get away from running a full blown server, but the slow performance is starting to bother me.
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JavaLawyer

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Re: What kind of performance should I expect
« Reply #3 on: January 31, 2010, 03:47:47 AM »

I share you sentiments.  I purchased my DNS-343s primarily for the networked storage capacity, with performance as a secondary consideration.  The unit serves it's purpose as a means of high capacity storage, but the transfer rates are wanting.
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skrupka

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Re: What kind of performance should I expect
« Reply #4 on: February 04, 2010, 03:30:00 PM »

i'm getting about 6 minutes for an 8 gig file transfer.
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hilaireg

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Re: What kind of performance should I expect
« Reply #5 on: February 08, 2010, 09:28:35 PM »

Few questions:

  • What are the HDD(s) manufacturer and model
  • When you look at the specs for the HDD(s), what is the cache size
  • Are there any jumpers installed on the HDD's to step them down to 1.5 Mbps (some HDD's ship jumpered for 1.5 instead of 3.0)


Cheers,
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addictarmy

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Re: What kind of performance should I expect
« Reply #6 on: March 25, 2010, 10:15:52 AM »

It depends on your network as well. For example if you are on a 100Mbps network you'll only be able to do somewhere south of 12.5MBps.
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kgon

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Re: What kind of performance should I expect
« Reply #7 on: April 08, 2010, 12:36:28 PM »

I expected more too,
I'm  using 8port-linksys G-Ethernet switch on Win7-64bit.
Transfer   PC        >    Raid-0   12MB   Ext-3
Transfer   Raid-0   >    PC        35MB   Ext-2

Transfer   PC        >    Raid-5   10MB
Transfer   Raid-0    >   PC       NA
I just changed from 2x 2TB Raid-0 to 4x 2TB Raid-5 and am transfering data back to NAS (I backed up my data to my PC's Raid-0 4TB ( 2x 2TB ).
So Trasfering 3TB of data is more like days not hours.

Anyone know how to get a faster trasfer rate?  A Win7 port setting?

New to this, first wanted fast-Big storage but now want safe data (DNS-323 died with Raid-0 2x 1TB, not sure if its the NAS or the Drives yet, need to pull out drives to test).
Kurt
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Shuttle with Win7-64bit on Gb-Switch to
4x 2TB-WD20EADS-Raid5-DNS-343
2x 1TB-SEAGATE-Raid0-DNS-323