From: Aaron W Morris (Decep@NETSCAPE.NET)
Date: Mon Sep 02 2002 - 17:00:50 EDT
First let me say that I am by no means a HACMP expert, but I am familiar with how HA works as well as some of the things it can do.
1. HACMP is basically the same thing as your "warmspare" concept with the exception being there is usually a shared disk pool so you do not have to keep the databases in sync manually. Also, a HACMP failover (depending on how large the databases and disks are) should not take more than 20 minutes. If a failure occurs with the "warmspare," a person has to be there to "hand-hold" the process, while a well-tested HACMP environment would allow you to worry about the "who, what, when, where, and whys?" with management after you wake up. :)
2. You shouldn't be worried about the hostname, only IP. The best thing to do is have each machine with it's own IP address and then bind an alias IP to the working machines production interface. If this fuctionality is not provided by default in HACMP, I know for a fact it can be implemented.
Hope this helps.
Ken_Sedlacek@KYRUS.COM wrote:
>Dear Selected few:
>
>Enviro:
>one H70, 4 GB/4 CPUs, 4.3.3.10, SSA, NO HACMP, running 1 Production Oracle
>8i instance.
>TSM backup.
>one H50, 3 GB/3 CPUs, 4.3.3.10 ("warmspare")
>
>Management Wants:
>A non-HACMP hotspare or warmspare environment for our Production Oracle 8i
>db.
>Management will tolerate 1 hour downtime when switching to "warmspare"
>server.
>
>While I know in general about HACMP, I would like to pick your Admin.
>brains on this question:
>
>Question 1:
>Would a HACMP environment be advisable instead of our home-brew "warmspare"
>environment.
>
>The home-brew "warmspare" environment involves many different scripts to be
>run to keep the "warmspare" server in-sync with the Production server. It
>also necessitates many mechanisms to make it the Production server, and
>then many more to make it again the "warmspare" non-Production server.
>
>Wouldn't HACMP be easier for all concerned??
>
>Question 2:
>When using HACMP w/Oracle, when HACMP switches, does the "new" Production
>server change its hostname, etc.?
>Without going in to too much detail, how does HACMP switch the Oracle/AIX
>parameters to maintain Production on the new Production server?
>
>It seems to me that we are "reinventing the wheel" with our home-brew
>"warmspare" server and would be much better using HACMP instead?
>
>
>Ken Sedlacek
>AIX/TSM/UNIX Administrator
>ksedlacek@kyrus.com
>
>IBM Certified Specialist: RS/6000 AIX v4.3 Support
>IBM Certified Specialist: RS/6000 SP & PSSP 3
>Tivoli Certified Consultant - Tivoli Storage Manager v4.1
>
-- -Aaron W Morris If not fully satisfied with this email, please return unread portion for a full refund. Offer void in Utah. Other restrictions apply. __________________________________________________________________ The NEW Netscape 7.0 browser is now available. Upgrade now! http://channels.netscape.com/ns/browsers/download.jsp Get your own FREE, personal Netscape Mail account today at http://webmail.netscape.com/
This archive was generated by hypermail 2.1.7 : Wed Apr 09 2008 - 22:16:11 EDT