we're running aix 4.3.3 ML 10, so we have to have our gig e network cards set to auto_negotiate as they do not have a setting for 1000. a check of the device reports it IS running at 1000 MB full duplex.
for our primary backups (i.e. database/large file) we are typically seeing between 8K - 15K. for system level backups (smaller files* we have seen up to 20K. we do not have jumbo frames enabled, but i think we could do so because the gigabit backbone is dedicated to backups. if we enable jumbo frames, what should we set the mtu size to? -----Original Message----- From: Kelly J. Lipp [mailto:[EMAIL PROTECTED]] Sent: Tuesday, December 24, 2002 5:36 PM To: [EMAIL PROTECTED] Subject: Re: Gigabit Ethernet speed What kind of performance are you seeing? I would expect a number greater than 20,000 KB/sec as reported by a client summary. I also would expect it to be highly variable and dependent on client speed. I believe that Gig E is going to be faster than just about anything else in all but the highest end systems so suspect a bottleneck elsewhere. As with 100 Mbit networks, duplex and link speed incompatibilities are killers. 100/1000 full is the way to go. Stay away from Auto unless you have un-managed network switches. Thanks, Kelly Kelly J. Lipp STORServer, Inc. 485-B Elkton Drive Colorado Springs, CO 80907 [EMAIL PROTECTED] or [EMAIL PROTECTED] www.storsol.com or www.storserver.com (719)531-5926 Fax: (240)539-7175 -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Conko, Steven Sent: Tuesday, December 24, 2002 7:44 AM To: [EMAIL PROTECTED] Subject: Gigabit Ethernet speed anybody have any tips on what type of "Network transfer rate" we should be seeing for our backups over gigabit ethernet? the clients backup via copper Gb ethernet dedicated for backups to a tsm server connected to a 3494 tape library with 10 3590 tape drives via fibre channel/brocade switch. there is only one client on one gigabit interface and 3 on another. any tips for improving network performance? thanks Steven A. Conko Senior Unix Systems Administrator ADT Security Services, Inc.
