Slow NAS (Synology) Transfer Rate

Posted on 2009-04-19
Last Modified: 2013-11-14

Router: Linksys RV042 (Firmware Version:
NAS: Synology DS207+ (Firmware DSM 2.1-0839)

Having owned a few Synology NAS, this particular transfer rate is extremely slow. When I try to open even a 100kb word document, it pauses for 30 seconds before opening, when I open a 2mb photoshop file, it takes over minutes. There're only around 5-7 users connected at any point with very low usage.

Can anyone advise how can I trace the performance issue of the NAS?  Is it possible that having VPN turned on (IP becomes 10.116.171.X) on the Router affects the network performance?

Question by:dennisdominic
    LVL 36

    Expert Comment

    by:Bing CISM / CISSP
    are all NAS devices sitting on the same internal subnet behind the router?

    when you talk about accessing the NAS, is it internal access or that through VPN?
    LVL 1

    Author Comment

    All sitting on the same internal subnet.
    Accessed on local LAN.
    The PCs and NAS are connected to the same Router  (Linksys RV042).
    When I transfer a 100mb file,
    PC to PC transfer at around 4mb/sec.
    PC to NAS (or NAS to PC) transfer at around 700kb/sec.
    LVL 36

    Expert Comment

    by:Bing CISM / CISSP
    > this particular transfer rate is extremely slow
    > PC to NAS (or NAS to PC) transfer at around 700kb/sec.

    PC to the specific NAS? or any NAS?
    LVL 5

    Expert Comment

    I would start to check if the NAS filesystem is healthy.
    Improper shutdown might damage the filesystem.

    LVL 1

    Accepted Solution

    I found out the reason is that Linksys RV042's Ports needs to be on Auto Negotiation mode and not 100M Full Duplex.

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