Have you determined what the actual problem is. Is it the disk, the server, the network, or the tape drive. I would start with what data rate you are getting right now. If you are getting 8MB+/second, then Gigabit may help, but if you are getting 2MB/second then you probably will not even notice an improvement. If the latter is true, you have to isolate where the problem is. If you are using LTO or DLT type drives, they can go into latch back and dramatically affect performance if you cannot provide the data fast enough. That can be because of any component in the process, disk, network, server, domino. So, you need to figure out where the pain is first.
What Rob has said is very true. Just because it says Gigabit does not mean you can get there. The fastest Intel Box we have ever seen is about 25MB/second reading a 100GB database with large blocks connected via SAN to an IBM Enterprise Storage Server. That is as good as it gets. Whats the gating fact? The IP packets burn up the CPU. These are 600MHZ XEONs I believe. The other piece is the electronics on the Gigabit card may not be able to move the data off the bus that fast so Gigabit just becomes connectivity not usage. Kind of like putting a light bulb on a 10,000,000 kva circuit. It isn't going to use any more than it can process. Paul D. Seay, Jr. Technical Specialist Naptheon Inc. 757-688-8180 -----Original Message----- From: Rob Schroeder [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 5:27 PM To: [EMAIL PROTECTED] Subject: Re: Gigabit performance with Win2K You're unlikely to get 10x improvement. Your problem will be a combination of the drivers and the size of the server. You actually need quite a large server with a good driver and an excellent fibregigabit card to drive true gigabit. The question is: are you using the bandwidth you have today? Rob Schroeder Famous Footwear 608-827-3495 phone 608-662-6495 fax Greg Redell <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent by: "ADSM: cc: Dist Stor Subject: Gigabit performance with Win2K Manager" <[EMAIL PROTECTED] .EDU> 09/11/2002 04:05 PM Please respond to "ADSM: Dist Stor Manager" Hello all, We are currently looking into upgrading our network to from 100Mb to gigabit and our network architecture group wanted to make sure that TSM could use all that bandwidth if it had it available. My main concern and the main reason for the upgrade is our Domino servers, can TDP use the extra speed, or is there too much overhead to let it ramp up to a good pace? Can we expect TSM to get a 10x throughput increase? I know there is a lot on this subject on ASDM.org but I did not see any comments on TDP or Win2K environments. Our environment is as follows: The server and nodes are all Win2K SP2 TSM server 4.2.1.0 2x1GHz procs File server clients 4.2.2.0 varying processors TDP for Domino 1.1.2 Domino 5.0.8 on 4x550 mhz procs Any input is helpful. Greg Redell Great-West Life & Annuity Insurance Co. Phone: 314-525-5877 Email: [EMAIL PROTECTED] [Insert Maniacal Laugh Here]
