My original question was:
I am in the process (more like research) on upgrading the ACS version from
8.5 to 8.6. The questions I have are: (oh yeah....they are connected to two
ES40s =) )
1.) If I remove the 8.5 card, how long will the HSG80 keep the data in
memory? I have "heard" that the HSG80 maintains memory for approx 2 days but
I am not sure how true this is. Obviously I won't leave the card out for
that period of time but I would like to know just to be on the safe side.
2.) This is the first time I am upgrading the ACS cards and is it that
simple to pull the card out and place the new 8.6 in? Do I need to bring the
SANs down first before swapping out the cards?
3.) I also need to order an additional 128 MB DIMM since the 32 MB DIMM does
not meet the 8.6 requirement. Do you think Compaq in the future will ever
require more than 128 MB for a requirement or should I just go all the way
to 512.
4.) The last question I have is more of an annoying problem. Everytime I am
connected via the CLI and I attempt to run any random command I will receive
annoying time out errors. It's pretty much a random occurence. Have you run
into problems like this before?
Here are the answers that I have received. Thanks to Randy Cable, Jim
Kurtenbach, and Tim Brown. The answers are verbatim.
1.) There are two types of batteries involved with this subsystem: Cache and
Controller. We believe you are referring to the cache batteries themselves.
If your system has been up and running for awhile, these should be fully
charged and can probably store your NVRAM contents for some period. Not sure
about two days and again this depends on your batteries; unfortunately not a
good way to determine there life, other than draining them, which you
probably do not want to do. These can also be powered down and should be if
the storage sub-system will be idle for any period. This will cause all
NVRAM to be flushed after about 4-6 minutes. In addition, Jim mentioned
printing out hard copies just in case.
2.) You shouldn't need to shut down entirely to do this upgrade. Shut down
one
controller and replace, bring back up and then do the same with the other
controller.
>>>Just follow the upgrade procedure for your controller which is on the
>>>Compaq web site. You will need to hold down the reset button, remove the
>>> 8.5. card, insert the 8.6 card, then release the reset in order for the
>>>controller to reboot. The SAN shouldn't need to rebooted since you're not
>>> chaning any of your configuration.
Really shouldn't need to shut everything down, although I do like to
schedule downtime for the entire system and do it after hours. That gives
me the opportunity to make sure all is well.
3.) Everyone I have talked to said max it out. This depends on what type of
activity you will be performing, but Daryl
suggested that you MAX out, if 512 is it, then by all means go for it. $'s
permitting, of course. The more memory the better; enables cache writeback
options and prevents data loss.
4.) Try HSG80> run vtdpy. It gives a cryptic screen of what is happening
inside the controller. I will also checked the cables and possibly switch it
to another port.
Thanks for the help.
Kenway Lee
Systems Engineer
IMPAC Funding Corp.
(949) 475-3934
klee_at_impaccompanies.com
Received on Wed Aug 15 2001 - 23:42:26 NZST