One of our clients had a primary breaker pop on Friday last week when an appliance was turned on while someone was running an oven’s self-clean cycle.
When the power failed it somehow managed to kill the APC BR1500LCD UPS protecting the server. The end result of the UPS being taken out was that both power supplies in the redundant PSU setup also failed.
The server was configured as follows:
- Intel Xeon X3220 Series CPU
- Intel S3210SHLX Server Board
- 4GB RAM
- Intel RAID Controller SRCSASRB + BBU
- 500GB Seagate ES series drives in dual RAID 1 arrays.
- Intel SC5299BRP with both PSUs.
Intel sent out a pair of replacement PSUs which fired up the hardware with no issues.
The BR1500LCD’s onboard display normally shows about 20 to 30 minutes of runtime on any given day. It now reads 1 minute so it will also be replaced.
We were fortunate that the spontaneous shutdown of SBS 2003 R2 Premium with ISA installed did not in some way mess up Exchange or Active Directory.
We ran a few reboot cycles and an update cycle checking to make sure that the Exchange database was happy in between each cycle which it was. We had their ShadowProtect backup on standby if there was a need to recover the server.
The final reboot happened in about 1/3 the time the first boot up after plugging in the new PSUs did. We will be keeping a close eye on this box to make sure everything stays happy.
It just goes to show that even with a good UPS in front of a system that includes line levelling that there are no guarantees.
Nothing replaces having a good backup that is known to recover without issues. The stress levels are so much lower when we know we have a fall back in the midst of a server down situation.
Microsoft Small Business Specialists
Co-Author: SBS 2008 Blueprint Book