Server File Sharing unstable on mac and windows network on Mavericks and OSX Server 3.0

Since I've updated our mac mini server from Mountain Lion and OSX Server 2.X to Mavericks and OSX Server 3.0 we are having sharing issues with Windows (7 and 8) and OSX Mavericks users, not being able to access files on the mac mini server.
What I've notice is that OSX Serer 3.0 stop working and I have to restart the Mac Mini Server to make things start working again.
This was not happening with Mountain Lion and OSX Server 2.X.
On the Windows and OSX users what happen is the computers keep trying to connect to the server and are not being able to open or copy files. Again this is intermittent, and I suspect it might be a OSX Server bug.
Any one having the same problem or can give us and advice would be great help.
Thanks.
Andre Tenenbaum

I too am having this exact problem as well as a few of my network administrator contacts that have gone through the Mavericks / Server 3 upgrade.
It may be worth noting that before the upgrade I had run a mac mini server (core 2 duo) that never had any unintentional downtime, and the current mac server had never gone down or lost connection so I know it has nothing to do with user or network configuration.
NAS server hardware:
- Mac Mini core i5
- 16 GiB ram
- Promise Pegasus Raid5 external drive (thunderbolt)
I am NOT running time machine as the backup.
Everyting posted above is occuring although the rate at which my users lose acces is sporadic. Sometimes the server will stay up 24-36 hours and sometimes it will only stay up for around 4. Every user, every group loses acces AT THE EXACT SAME TIME EVERYTIME to EVERY SHAREPOINT...all of my local users as well as my remote users. All of my users are on Windows machines (mostly win7, but a couple of XP and 8 users as well). The share is accessed via a mapped drive using the format x.x.x.x/share and I have had 0 issues with getting users connected. The problem is 100% keeping them connected. When the users lose access the get the "drive cannot be accessed" error on their end, however when I check the server 3 app, it still shows all users connected and I have let it run for a few minutes and the idle times do change.
I also cannot see any spikes in the Activity monitor that might indicate a memory strain issue on the server side, but I assume that is because I am not watching the Activity Monitor at the moment everyone loses access.
Let me say that the SMB2 protocol does work much better when it actually works, much faster, but intermitent connectivity is a VERY SERIOUS ISSUE and has resulted in several corrupt files for my workers already. Also, because I was one of the unfortunate people that had the upgrade lock up on me and I had to restart it, I lost my 10.8.x recover backup and so I would have to do a clean install in order to restore my server back to its original state. I am also hesitant to do this because I would most likely only be able to download the Server3 app from the app store and I have not heard from apple or any other power user group on whether the bug is with the app or the OS.

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Using Apple Server File Sharing

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If you really want to learn more about OS X Server, I highly recommend the Apple Training Series books at Peachpit Press.
http://www.peachpit.com/store/product.aspx?isbn=0321775082
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Tengo una notificación de una respuesta, pero parece haber desaparecido ... pero en respuesta a su pregunta en la notificación ...
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Though this worked on Snow Leopard without any issues, Lion just doesn't seem to be able to handle it. The odd thing is, on Snow Leopard there was only a single 1GB ethernet connection to a NAS system, whereas with Lion we have a much more powerful machine with a 6-port 10GB ethernet card and a 4 lane 8GB fiber card to a true SAN. You would think that the newer scenario with Lion would handle far more users with ease.
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Issues connecting from PC to Mac
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Issues connecting from Mac to PC
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HT201301 How do I send an audio file via file sharing to other Mac and PC users instead of email?

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Hi guys, I have a client running Lion server 10.4, and roughly 5 Mac's around the office all running lion 10.4. Everything was setup and running smoothly until this morning when he lost all file sharing to the server. (Data is stored on the server and Mac's connect through finder>network>server) When hitting "connect as" there is no login window, the black bar just says "connecting" and doesn't get any further. I have tried restarting the file sharing service from the server, connecting manually via its IP with both AFP and SMB to no avail. I have also tried turning off AFP on the server and restarting that, as well as adding other shared folders, opening up permission etc. Hoping someone has an idea of what's going on!

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Hi Jbiedlin,
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Lion Server File Sharing Crashes

We have a brand new Mac Pro (12 core with 64GB of RAM) running OS X Lion Server in a corporate environment. The server is running only file sharing and software update servers, and we have around 40 users who need to be connected over AFP at all times. This company runs 24/7 and we have an XSan environment using an ATTO Celerity 8GB 4 channel fiber card (84EN) along with a 6 port 10GB Ethernet card. The Ethernet card is configured in a link aggregation bond using ports 1-4. The idea is that clients who do not have fiber cards installed on their machines can still connect to the SAN via Ethernet and this file server. They AFP connect to the share, and of course the share is the SAN. It's a single mount point and everyone has read/write access.
The issue is that this machine keeps crashing (multiple times per day) and I cannot find any reason why. Syslog shows nothing of value and I've called into Apple Enterprise Support who also brought nothing to the table.
We initially had SMB and AFP file sharing activated but as soon as a Windows 7 client connected the machine was brought down. So, I disabled SMB via terminal (sudo serveradmin stop smb) and deactivated it via the Server app for the share point). That at least allows the machine to be up for 4-6 hours before crashing again.
This is seemingly the simplest of setups for file sharing and I would've thought that this beast of a machine would be able to handle being a file server without issue for far more than 40 clients. I'm seeing high CPU usage, which Apple support told me was perfectly normal (around 60% on the kernel_task process and around 55% on the AppleFileServer process). It also seems to consume all 64GB of memory, though it shows 60GB as inactive, but at the same time it's paging in and out.
Virtually all of the clients are running Lion (10.7.4), the server itself is running 10.7.4. There are a few ethernet connected clients running 10.6 along with two running 10.5. As I mentioned I disabled SMB so there are no Windows computers connecting to this machine at this time (though it would be nice to get that functionality back if AFP can be stabilized).
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All the memory is fine. The server rarely if ever goes down when there are only around 10-12 users connected. When there are 20+ users connected and working heavily it goes down often. When I say working heavily, I mean they are transferring huge files to the SAN (100GB+), sometimes 5 at a time per user, and there are a bunch of others who are reading large video files at a minimum of 220MB/sec from the SAN.
Though this worked on Snow Leopard without any issues, Lion just doesn't seem to be able to handle it. The odd thing is, on Snow Leopard there was only a single 1GB ethernet connection to a NAS system, whereas with Lion we have a much more powerful machine with a 6-port 10GB ethernet card and a 4 lane 8GB fiber card to a true SAN. You would think that the newer scenario with Lion would handle far more users with ease.
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Mac Pro is hard wired (ethernet) to cox.net and Mac Book is wireless to cox with Netgear router-WEP.
Have gone into system preferences on both machines and under "Sharing" enabled file sharing.
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If you just want to do this on your home network, wired or wireless, and you've already enabled file sharing, you're done.
Just hit command/k to Connect To Server, then hit browse.
Your MacPro should show up.
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Server File Sharing unstable on mac and windows network on Mavericks and OSX Server 3.0

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