how to shutdown Hyper-v, Microserver and SAN so i could change UPS batteries?


I  need to change the batteries of our UPS so I need to switch everything off before I start. And I don't know where to start.

we have 2 hyper-v , HV1 and HV2. (HP DL360)
we have 6 virtual servers.
we have SAN (MSA1040)
Microserver (HP G2020)

Could you please help me. what do i switch off first and how? and in what order?
then once i am done with the UPS, how to switch all back on and the order?

Thank you for your help
Who is Participating?
Philip ElderConnect With a Mentor Technical Architect - HA/Compute/StorageCommented:
All of the UPS systems that are designated to work with servers (sine wave outputs) stay up during battery swaps. We don't shut things down to swap batteries.
Farhan KaziSystems EngineerCommented:
I assume you can manage your infrastructure from your local system or any jump box which is not running on servers that you going to shutdown.
1. Shutdown virtual machines (first applications, databases - if any) either via console, RDP, SSH.
2. Shutdown Microserver if it is being used as an application server or database server.
3. Shutdown Hyper-v servers (any order)
4. Shutdown SAN

Power on sequence is opposite to above sequence.
1. Power on SAN
2. Power on Hyper-v servers
3. Power on database servers (VMs on physicals)
4. Power on all other application servers (VMs on physicals)
russusAuthor Commented:
thank you both for your answers.

Philip, i think the unit i've got (GXT2-3000) along with a battery cabinet (GXT2-72VBATT) are about 10 years old. i've asked around and looks like you're right, i should be able to hot swap the batteries without interrupting the load. But i must be sure before fiddling with it.  
thank you for your help
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
For us, as a rule once we've cycled a couple of battery changes through the UPS we're looking at replacing the entire lot. The electronics tend to get a little flaky depending on heat/cool cycles they have gone through.
Make sure the batteries haven't expanded to the point where things will not pull out.
I've had these issues in the past and the last thing you want is fighting with a stuck battery.
russusAuthor Commented:
thanks pgm but what can be done in that case? must take them out
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Have a crow's foot handy (crowbar, J-Bar). I've had to use one to convince some very bloated batteries out of a 2U enclosure. ;)

A set of pry bars or larger flat head screwdrivers could be used as well. Just make sure to have some strong and wide plyers available to help "influence" the UPS battery enclosure back into shape.
russusAuthor Commented:
hehe thanks Philip. I've swapped the batteries of the unit but i was very disappointed at the time as the battery cabinet is completely different structure and didn't want to do something i wasn't sure of.
anyhow, batteries retested and now i have no warning error and no beeps and i have green lit led panel :)

thank you all for your help
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
No worries. Does the UPS have a network management setup?
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