The question:
I have the following situation. I currently have an ESA10000 with quad HSZ70's.
I have purchased a new ESA10000, sans controllers. The new 10000 has the upper
and lower BA370's bridged. Here's the plan:
1. Pull the upper pair of '70's and install bridge cables in the old 10K.
Result is having the bottom pair of 70's run the whole cabinet.
2. Put the pair I pulled in the new 10K cab.
The question I have is the state of the disks in the old 10K.
1. what scsi id's will the lower controller give to the upper drives?
2. is a reconfig of the disks necessary (meaning backup prior and restore after)
or will the bottom controller pick up the config? I did a save config on each
unit as it was created.
Bottom line is I'm prepared to restore the data off tape for the upper '370.
I'm just concerned I'm going to really have to restore the whole cabinet (which,
of course, I am prepared for.)
Well, bottom line, is it worked. Thanks to the folks that chimed in. I'll
forward the reponses on to those who are interested. Here's a rundown of what I
did.
1. Backed it all up... just in case!
2. Took detailed notes of the configuration of the upper drives
3. Shutdown the OS.
4. Deleted everything from the upper controller all the way down to the disk
level.
5. Shutdown all four controllers and powered off the box.
6. Pulled the controllers.
7. Took the "blanks" from the new 10000 controller location and put them in the
upper location.
8. Made sure the lower PVA was set to 0 and set the upper PVA to 2.
9. Installed the bridge cables.
10. Powered it back up
11. Ran CONFIG
12. Recreated everything from the raidset/stripeset on up to unit.
13. Viola (yeah, I know, bad joke), all the data was there.
What i didn't do and I should have done ahead of time is put some kind of "place
holder" at the top-level of each mount point. I was on my 30th hour by the time
i brought the machine back up and it took me a while to figure out what had been
mounted where. I know I could have done the math to figure out the device >
unit translation but i was tooooooo damn tired by that point.
Anyway, it's doable!
Jim
Received on Wed Oct 20 1999 - 18:32:49 NZDT