UPS Setup For a Small/Mid-Size Company?

An anonymous reader writes "We're a small company employing ~30 people and we are becoming increasingly reliant on virtual servers. Unfortunately, the hosts they are on don't have redundant power supplies because we simply don't have the capacity. We currently have one UPS per rack, which gives us about two minutes. This may have been enough time when they were put in — they've been there for some time — but it isn't really enough time to shut everything down in the event of a failure. Domain Controllers alone may take up to 15 minutes. So I'm looking at upgrading the UPSs to ones that would preferably give us around 15 minutes of breathing space and send an email or text alert when a failure is detected. Something that could trigger shutdowns automatically would also be nice. Of course cost is a key factor too. so given all of the above, what does Slashdot recommend?"

Comments

Have you tested the UPS lately?

[plopez]

This is sort of off topic, but when was the last time you tested the UPS units that were installed "some time ago". The batteries can eventually go flat. You better check what you have ASAP. You may need to replace them sooner than you think.

I can't remember the brand, but some of the higher end UPS units I have used came with monitoring software. They software polled the UPS unit, and started the shutdown as soon as a power failure caused the switch over to battery.

HTH.

1st. Identify Requirements

[narziss]

It's not about the amount of people, servers, or a fixed time limit to preserve power. First and foremost, you need to identify what the critical systems are that need to be protected. These may include the VM farms, NAS storage, obviously the underlying network infrastructure, and at the very least, some management terminals that can be used in the event of a failure. Once you identify these systems you need to reference the electrical in/output specifications. If possible, you would want to measure the real requirements in production with inline monitors or passive taps. After you have built your requirement set (mind you, you may decide it's better to have a few small UPS vs one very very large one) you need to explore what needs to be up, and for how long, and build yourself a model. There are dozens of UPS manufacturers, and tens of thousands of combinations for any sized company. Once you have an outline of the systems and their individual power requirements, coupled with your own requirements for their availability/protected power, it will be relatively easy to build yourself a good level of protection on a small budget. Mind you these devices (UPS) can often be found on the second hand market due to company refresh, datacenter closures, etc. Many can be easily re-certified by the manufacturer directly or a variety of 3rd party vendors who specialize in this type of infrastructure.