Accessing zip files on file shares painfully slow - WIndows 10 & Windows 8.1

2020-02-26

Question

_{Wednesday, February 26, 2020 9:01 PM}

We regularly received zip files from clients that are placed in project directories on a Synology NAS.

Our engineers who are all using relatively powerful workstations find is excruciatingly slow to open the Zip files from the NAS (30-60 seconds for a 2MB zip file) and significantly longer for larger files. I've scoured this form and the web searching for a solution, but nothing I have tried seems to improve the situation. I've monitored our network which usually shows to be <10% utilized and peaks at 25% utilized, so I don't think it's the network. The NAS has seen a few instances where IO utilization is above 80%, however seems to be mostly during backups and not during the day.

OS versions: Windows 10 (1809, 1903 & 1909), Windows 8.1 (9600)

Attempted fixes:

Validated all IP configuration settings and DNS

Updated all network drivers

Disabled SMB1 communications to NAS. Interestingly enough, that made matters worse for the Windows 8.1 client just accessing folders, and had no impact on how long it takes to open a zip file.

Turning off Antivirus & Windows Firewall for testing - no noticeable difference

Any help would be appreciated.

Thanks!

All replies (3)

_{Thursday, February 27, 2020 1:24 AM}

Hi,

Do you use any unzip software?

If the problem also have on accessing the other shared files?

Please check the NAS log and if there is any error/

Please refer the following link for more information:

https://www.reddit.com/r/DataHoarder/comments/2qksto/is_it_unusual_for_a_nas_to_take_a_while_to/cn8h7vc/

Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

Hope this can help you.

Have a nice day!

Ellen

Please remember to mark the replies as answers if they help.
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_{Thursday, February 27, 2020 8:52 PM}

Hi Ellen,

We use WinRAR to unzip files, and have already pointed out to our engineers that downloading the zip files to their local hard drive would speed up unzipping.

Having said that, I understand that the unzip is being done over the network, but I'm struggling that on a 10G network a 2MB zip file should take >30 seconds to unzip. Even unzipped, the files aren't that large, they primarily use zip to put the data into containers to move between our offices and the client.. I have not seen any errors on the NAS, and as my initial note said the NAS isn't overly busy.

Any other suggestions?

Thanks

Ira

_{Friday, March 6, 2020 7:02 AM}

Hi,

*>>We use WinRAR to unzip files, and have already pointed out to our engineers that downloading the zip files to their local hard drive would speed up unzipping. *

The unzip process is: download the zip file form NAS and then use WinRAR to unzip the files?

If it is slow to unzip files, please try to update the WinRAR.