Network speed affected by large file copy operations. Also, why intermittent network outages?

Hi
I have a couple of issues on our company network.
The first is thate a single large file copy imapcts the entire network and dramatically reduces network speed and the second is that there are periodic outages where file open/close/save operations may appear to hang, and also where programs that rely on
network connectivity e.g. email, appear to hang. It is as though the PC loses it's connection to the network, but the status of the network icon does not change. For the second issue if we wait the program will respond but the wait period can be up to 1min.
The downside of this is that this affects Access databases on our server so that when an 'outage' occurs the Access client cannot recover and hangs permamnently.
We have a Windows Active Directory domain that comprises Windows 2003 R2 (soon to be decommissioned), Windows Server 2008 Standard and Windows Server 2012 R2 Standard domain controllers. There are two member servers: A file server running Windows 2008 Storage
Server and a remote access server (which also runs WSUS) running Windows Server 2012 Standard. The clients comprise about 35 Win7 PC's and 1 Vista PC.
When I copy or move a large file from the 2008 Storage Server to my Win7 client other staff experience massive slowdowns when accessing the network. Recently I was moving several files from the Storage Server to my local drive. The files comprised pairs
(e.g. folo76t5.pmm and folo76t5.pmi), one of which is less than 1MB and the other varies between 1.5 - 1.9GB. I was moving two files at a time so the total file size for each operation was just under 2GB.
While the file move operation was taking place a colleague was trying to open a 36k Excel file. After waiting 3mins he asked me for help. I did some tests and noticed that when I was not copying large files he could open the Excel file immediately. When
I started copying more data from the Storage Server to my local drive it took several minutes before his PC could open the Excel file.
I also noticed on my Win7 client that our email client (Pegasus Mail), which was the only application I had open at the time would hang when the move operation was started and it would take at least a minute for it to start responding.
Ordinarlily we work with many files
Anyone have any suggestions, please? This is something that is affecting all clients. I can't carry out file maintenance on large files during normal work hours if network speed is going to be so badly impacted.
I'm still working on the intermittent network outages (the second issue), but if anyone has any suggestions about what may be causing this I would be grateful if you could share them.
Thanks

What have you checked for resource usage during one of these copies of a large file?
At a minimum I would check Task Manager>Resource Monitor. In particular check the disk and network usage. Also, look at RAM and CPU while the copy is taking place.
What RAID level is there on the file server?
There are many possible areas that could be causing your problem(s). And it could be more than one thing. Start by checking these things. And go from there.
Hi, JohnB352
Thanks for the suggestions. I have monitored the server and can see that the memory is nearly maxed out with a lot of hard faults (varies between several hundred to several thousand), recorded during normal usage. The Disk and CPU seem normal.
I'm going to replace the RAM and double it up to 12GB.
Thanks! This may help with some other issues we are having. I'll post back after it has been done.
[Edit]
Forgot to mention: there are 6 drives in the server. 2 for the OS (Mirrored RAID 1) and 4 for the data (Striped RAID 5).

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Hi,
Sorry if it causes confusion but "by design" I mean "by design it will use memory for copying files via network".
In Windows 2000/2003, the following keys could help control the memory usage:
LargSystemCache (0 or 1) HKEY_LOCAL_MACHINE\CurrentControlSet\Control\Session Manager\Memory Management
Size (1, 2 or 3) in HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameter
I saw threads mentioned that it will not work in later systems such as Windows 2008 R2.
For Windows 2008 R2 and Windows 2008, there is a service named Microsoft Windows Dynamic Cache Service which addressed this issue:
https://www.microsoft.com/en-us/download/details.aspx?id=9258
However I searched and there is no update version for Windows 2012 and 2012 R2.
I also noticed that the following command could help control the memory usage. With value = 1, NTFS uses the default amount of paged-pool memory:
fsutil behavior set memoryusage 1
You need a reboot after changing the value.
Please remember to mark the replies as answers if they help and un-mark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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May 4 00:23:37 Orobourus kernel[0]: AppleRAID::recover() member CBDFD75C-5DC8-4089-A7AE-1EFBE0B1A6EB from set "tao.av.complexity.org" (868584D1-E485-4B37-AFCE-E7AFC3AD5BB7) has been marked offline.
May 4 00:23:37 Orobourus kernel[0]: AppleRAID::restartSet - restarting set "tao.av.complexity.org" (868584D1-E485-4B37-AFCE-E7AFC3AD5BB7).
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: jnl: dojnlio: strategy err 0x6
May 4 00:23:37 Orobourus kernel[0]: jnl: end_transaction: only wrote 0 of 12288 bytes to the journal!
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: disk5: media is not present.
May 4 00:23:37 Orobourus kernel[0]: jnl: close: journal 0x7b319ec, is invalid. aborting outstanding transactions
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This looks similar to another 'RAID volume unmounts' thread I found elsewhere in the forum - it appeared to have no solution apart from contacting Apple.
Is this the only recourse?
G5 2.7 6.5Gb + X-RAID 3.5Tb Mac OS X (10.4.9) Decklink Extreme / HD

There should be no need to restart the controllers to get additional reporting -- updating the firmware restarts them.
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Large file copy fails

trying to move a 60GB folder from a NAS to a local USB drive, and regardless of how many times it try to do this it fails within the first few minutes.
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The CPU does occasionly peak at 100% when transferring a large file but the copy often fails when the CPU is significantly lower. I know a 4240 has 300Mbit/s throughput but as I understood it traffic would still be serviced but would bypass the inspection process if exceeded, maybe a transition from inspection to non inspection causes the copy to fail like a tcp reset, I may try a sniffer.
I do have TAC involved but like to try and utilise the knowledge of other expert users like yourself to try and rectify issues. Thanks for your help. If you have any other comments please let me know, I will certainly post my findings if you are interested.

Help with large file copy to WKS

I need to copy a folder and all of it's contents from
\apps\reallybigfolder to each workstation at c:\putithere.
Because of the size of the file copy, I chose to create an app object
with logic that says if xxx.exe exists then do not push. Basically, I
don't want this thing to just run constantly. I need it to run one time
to each workstation on the network when the users log in.
I have tried pointing the app object to \public\ncopy.exe and then
setting the parameters the way I want them, but I keep getting an
error: "Cannot load VDM IPX/SPX Support". The two files in the folder
are copied, but the subfolders are not. I have tried using the /s/e
switches, but it does not help.
I have also tried writing a .bat file, to test it - but I get the same
results as above. So next I tried using copy instead of ncopy. I do not
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Tony

What you are doing should work.
It sounds as if there are some other workstation issues going on.
I don't think I seen or could make the error "Cannot load VDM IPX/SPX
Support" happen if I tried. Perhaps this would happen w/o a Novell
Client installed. In such a case you could use XCOPY or ROBOCOPY.
(Robocopy is way cooler than XPCOPY and is free from MS.)
You can also use the "Distribution Tab" and the "Files" section to copy
entire directories. Just use *.* as the source.
[email protected] wrote:
> I need to copy a folder and all of it's contents from
> \apps\reallybigfolder to each workstation at c:\putithere.
>
> Because of the size of the file copy, I chose to create an app object
> with logic that says if xxx.exe exists then do not push. Basically, I
> don't want this thing to just run constantly. I need it to run one time
> to each workstation on the network when the users log in.
>
> I have tried pointing the app object to \public\ncopy.exe and then
> setting the parameters the way I want them, but I keep getting an
> error: "Cannot load VDM IPX/SPX Support". The two files in the folder
> are copied, but the subfolders are not. I have tried using the /s/e
> switches, but it does not help.
>
> I have also tried writing a .bat file, to test it - but I get the same
> results as above. So next I tried using copy instead of ncopy. I do not
> get the error message, but it still does not copy any of the subfolders.
>
> Is there another way? An easier way? I really appreciate the help.
>
> Tony
Craig Wilson
Novell Product Support Forum Sysop
Master CNE, MCSE 2003, CCN

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Hi,
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1. Problem not due to firmware upgrade. The problem existed before the firmware upgrade, and persist after the upgrade. But yes, I did power off and power on my router again.
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Network speed affected by large file copy operations. Also, why intermittent network outages?

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