How can I manage redundant HMC upgrades with firmware upgrades?

Thread Tools Search this Thread
Operating Systems AIX How can I manage redundant HMC upgrades with firmware upgrades?
# 1  
Old 08-24-2009
How can I manage redundant HMC upgrades with firmware upgrades?

Lets says I have 2 HMC's A and B, connected to a p570 managed system.

Right now the firmware level of the p570 is EM320_076 and that needs to be upgraded to EM340_095.

Now the HMC's are at V7R3.3 and as per the code matrix the HMC's needs to be upgraded to V7R3.4 Servicepack 2.

Now my query

1. Should I be upgrading both HMC A & B before upgrading the firmware of p570.

2. If I leave one HMC as it is and upgrade the other one only and then upgrade the firmware level on p570, will there be any issue?

let me know if I not clear.


Last edited by balaji_prk; 08-24-2009 at 01:00 PM.. Reason: Edited title
# 2  
Old 08-24-2009
Yes you have to upgrade the HMC(s) before doing the managed system's firmware upgrade.

Once one HMC is upgraded you should be able to do the firmware update but why wouldn't you want to upgrade the 2nd HMC? Going to V7R3.4 SP2 isn't very difficult if I remember correctly.

# 3  
Old 08-24-2009
Hey Joe..

Thanks for the quick response..

There are other managed systems conected to the HMC and not all of them are going for an upgrade.

Though I would have a backout plan if I just upgrade one of the HMC.

# 4  
Old 08-24-2009
Since you can reboot (and upgrade) an HMC w/o bringing down any of it's managed systems I guess I don't understand your comment, but no big deal.
# 5  
Old 08-24-2009

hmc firmware upgrades are downwards compatible but NOT upwards compatible. If you upgrade only one hmc and than the frame, you will have problems afterwards with the other hmc - if you upgrade both hmcs first, you won't have any issues and your not-upgraded frames won't have issues either.

Kind regards
# 6  
Old 08-24-2009
hmc firmware upgrades are downwards compatible but NOT upwards compatible.
That makes me clear.

Thanks guys.

Login or Register to Ask a Question

Previous Thread | Next Thread

8 More Discussions You Might Find Interesting

1. What is on Your Mind?

Discussion (Thread) Tagging Upgrades

Dear All, I have made significant progress coding new discussion thread tagging features. As always, we want all users to tag thread and moderators to tag threads with relevant keywords. Moving forward, in addition to the #1 important "human tagging", we will also auto tag threads with one... (4 Replies)
Discussion started by: Neo
4 Replies

2. What is on Your Mind?

Phase III: CSS Flexbox Upgrades

On my never ending quest to get rid of table tags and make the site responsive for all device sizes, I plan to use CSS Flexbox with jQuery. I tried using Bootstrap Flex and CSS Grids, but none of these worked as easy and clean as CSS Flexbox. For example, today I changed the top header area... (0 Replies)
Discussion started by: Neo
0 Replies

3. AIX

Need to confirm something regarding TL upgrades

Hi everyone, My current AIX OS level is "7100-01-06-1241" and I am planning to upgrade it to " 7100-02-03 ". Can i directly upgrade it to "7100-02-03" from 7100-01-06" ? or first i need to upgrade the "7100-01-06" LPAR to TL 02 and then reboot and then upgrade it to TL 02 SP03 ? ... (4 Replies)
Discussion started by: System Admin 77
4 Replies

4. AIX

HMC upgrades

Hey!!! Has anyone done HMC patch installation remotely? I would love to know if that would be possible. I have been doing through CD/DVD but hate to do the additional work of finding someone in the DC and sending him the CD's. I have seen the option to supply remote site. can that be helpful?... (5 Replies)
Discussion started by: balaji_prk
5 Replies

5. News, Links, Events and Announcements

Solaris 10 and live upgrades

two articles related to live upgrades that i found useful and noteworthy. Solaris 10 5/08 Live Upgrade Gotcha :: Col’s Tech Stuff Solaris Live Upgrade and Patches :: Col’s Tech Stuff (0 Replies)
Discussion started by: pupp
0 Replies

6. SuSE

Linux(Suse) Upgrades

Hello, Anyone out there deal with updating OS on linux servers remotely? We use Suse but like to hear what someone else does with any linux version. We have network connectivity to our remote locations but it's just a DSL connection, so some will be fast and some will be slow. Thanks for... (1 Reply)
Discussion started by: benefactr
1 Replies

7. UNIX for Advanced & Expert Users

RedHat remote upgrades

Is there an easy (and safe) way to upgrade RedHat versions remotely? I know the difference between 7.2 and 7.3 is just a bunch of newer .rpm file versions. Or is there more? Do I have to boot the CD and choose upgrade? What if I'm 100 miles from the server and would like to avoid traveling there?... (1 Reply)
Discussion started by: ArkiMage
1 Replies

8. UNIX for Dummies Questions & Answers

Hardware Upgrades..

Quick question would it effect Linux if I upgraded my Ram from 128RD Ram to 256RDRAM (I'm going to simply pop in a second 128 RAM chip)...would I need to change any configuration options etc or would Linux detect all this with no problem? (4 Replies)
Discussion started by: PravusMentis
4 Replies
Login or Register to Ask a Question