This is one of the truly great things about Veritas Volume Manager. When I first realized I could take a couple of JBOD disks chassis worth of disks, dump them into a pile, insert them into the chassis in random order (not necessarily even into the same chassis), and connect the chassis to different controllers, or connect the chassis to a different system (running VxVM), and it would all work, I was amazed. You don't even have to reboot the system, if the devices were not in use when you removed them, and if the system can scan the disk bus and create the devices on the fly (eg cfgmgr on AIX or devfsadm on Solaris).
All the information about the diskgroups and their components is in the private region on each disk. As long as the OS can read the disk, you can ask Volume Manager to scan the private region on the disks and from there Volume Manager knows how to put it back together, even if it was a bunch of mirrored plexes that were then striped together. -- John Cronin 678-480-6266 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Darren Dunham Sent: Thursday, September 06, 2007 2:49 AM To: Veritas-vx@mailman.eng.auburn.edu Subject: Re: [Veritas-vx] HBA Driver update and Veritas > I have another really quick question. If I change drivers from the Sun > qlc driver for the Qlogic 2460 HBA's will that change my target device > id's and will Veritas be able to handle that gracefully as far as > Veritas enabled disks, and volumes across those disks? It is very likely to change the controller portion of the device at a minimum. Yes, VxVM should handle that gracefully. As long as all the disks are "visible" to the OS, VxVM will find the information that describes how the diskgroup is arranged. Name and specific path changes should have no effect on proper operation of the volumes. -- Darren Dunham [EMAIL PROTECTED] Senior Technical Consultant TAOS http://www.taos.com/ Got some Dr Pepper? San Francisco, CA bay area < This line left intentionally blank to confuse you. > _______________________________________________ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx ***** The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential, proprietary, and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from all computers. GA623 _______________________________________________ Veritas-vx maillist - Veritas-vx@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-vx
