Yes I believe that is the case. We are not using z/OS for the VPN service.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of R.S. Sent: Thursday, March 30, 2006 10:29 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: z/OS DFS SMB Performance Is the VPN terminated outside from z/OS ? I mean: [1]---encrypted-Inet--- [2] ---clearLAN--- [3] 1 - remote PC with VPN 2 - local VPN device 3 - mainframe Is the above true ? -- Radoslaw Skorupka Lodz, Poland Smith, Sean M wrote: > Problem: > > When connecting to work over VPN, SMB performance leaves a lot to be > desired. Where a 200k file in the office loads in 5-9 seconds, over VPN > it takes 50-60 seconds. It does not appear to be a server problem or a > bandwidth problem. I tried the same file directly pulling it from an > HFS and I got it loaded in 6 seconds from home. I then setup a file > server on a z/OS box to see if it would perform better. It did not. > Talking to local VPN expert, he basically said that SMB is "chatty" and > that we will see some improvement with Windows Vista. > > > > > > Reading the DFS manual for SMB, there are several notes about > performance one of which states that HEAPPOOLS(ON) provides a > significant improvement. What they don't say is what the heap pool > sizes and percentages should be for SMB. I am overriding the HEAPPOOLS > in the JCL so these will not be system wide. I tried HEAPPOOLS(ON) and > did see a good improvement. > > > > Any help would be appreciated. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
