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Paul,

It's great that you are testing! Congratulations for that since many shops figure they have a good back up, why test the recovery, and you have very well described why in a very short note.

The time to recover the disk configuration, load LIC, the OS and LPPs are all going to be the same under BRMS or IBM i direct commands. BRMS will add about 3% or 4% to a recovery of the applications since it has to update its database along the way, but that's reasonably minor.

It should take about two more tries before you have your save process set up to support your intended recovery plan. (At least that's the average I've run into) Keep in mind, if you use the *SAVSYS group or one just like it for your full system saves, you can still use the native IBM restore commands to recover the system, and not use BRMS, to do the recovery. Not my first choice but possible. Just use the correct sequence, LIC/OS, *IBM, *ALLUSR, (repeat as needed for iASPs) *LINK (repeat as needed for iASP) and finally DLO. You can avoid the BRMS overhead in that case and get the exact same results as you would from a BRMS recovery, or a "21" save. You can even change the program behind the option 21 on the RESTORE menu to run the commands the way you want them if you wish.

I don't suspect a restore without BRMS will be that much faster. Frankly as our systems have grown, we have not kept up our expectations about the recoveries to go with them. A bigger system takes longer to restore and most have not though about that part.

You say you had to both initialize the disk and reintialize them when you added them to the ASP (*SYSBAS ?). Since the RAID controller did not change out DASD Units, that implies something went wrong there, you should not have needed two initialization routines. Where the DASD units marked read only (DPH00x) ?

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 4/21/2013 6:46 PM, Steinmetz, Paul wrote:
I've just completed a BRMS test recovery of a V6R1 R&D partition to a test partition, many issues, (many objects, links, and authorities not restored) need to be reviewed and resolved.
Recovery took 4 days.
Recovery was from system save, month end full save, and daily incrementals.
12 hours to init disks, 12 hours to add to ASP, LIC 1 hour, 5 hours i5 OS, user data - 2 days plus.
Previously I've done restore 21, with good success.
BRMS does an excellent job for saves, application restores, but I am really questioning a total recovery.
Has anyone done a BRMS recovery in a reasonable time with minimal errors?
I'm not sure I could ever recover using a BRMS recovery.

Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
471 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx
http://www.pencor.com/
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