Hi Angela, I remember looking at issues relating to many open files and needed to do some SMD tuning at the time http://blogs.citrix.com/2010/10/21/smb-tuning-for-xenapp-and-file-server s-on-windows-server-2008/ This blog might give you an idea, It's for 2008. I was using server 2003 at the time but don't have exact MS article at hand Ronnie From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Angela Smith Sent: 30 June 2011 08:45 To: thin@xxxxxxxxxxxxx Subject: [THIN] Session hangs/resets Hi Im having an issue on my Windows 2003 Xenapp 5 Farm where Sessions keep locking up and just disconnecting, event logs say Event ID 50, and 26 for delayed write failed. This is particularly noticable with Lotus Notes 8.5 client which relies heavily on File Server. I've been doing research on this all last week with no luck at all. File server hosting user home drives/profiles is on the NAS. NAS is underutilised and Citrix Servers are all connected to Gig network again which is underutilised. No other applications get errors except for Lotus Notes, and when it crashes all of their applications crash. It just crashes the user's entire connection. There is no latency that I can see Has anyone seen this issue before? Ive had to reset over 300 connections in 1 month because of this issue. We have Session reliability enabled. Thanks Ang Visit our website : www.ltai.ie __________________________________________ Lufthansa Technik Airmotive Ireland Limited. Registered in Ireland. Reg. No. 45999. Registered Office: Naas Road, Rathcoole, Co.Dublin. Lufthansa Technik Airmotive Ireland Leasing Limited. Registered in Ireland. Reg. No. 140891. Registered Office: Naas Road, Rathcoole, Co.Dublin. __________________________________________ The information in this email and in any attachments is confidential and may be privileged. If you are not the intended recipient, please destroy this message, delete any copies held on your systems and notify the sender by return email. You should not read, retain, copy, disseminate, distribute, disclose or use this email or its contents in any way. Any such action is strictly prohibited. Thank you.