Choosing the right UPS...
Each server at uagra.net is of course under an UPS (Uninterruptible Power Problems Source).
Question is, how to couple UPS and machines? Should we buy new UPSs? Could we reuse some existing one? Are there some UPS units that need a battery replacement? Problems, problems...
Current UPS stock
Currently (February 2010) there are the following UPSs in service or in stock:
| UPS make & model | Power (VA) | Power (W) | Host serviced |
|---|
| APC BackUPS RS 800 | 800 | 540 | gulo |
| APC BackUPS RS 800 | 800 | 540 | meles |
| APC BackUPS ES 700 | 700 | 405 | eira |
| APC BackUPS 650 | 650 | 400 | none |
APC BackUPS 650 | 650 | 400 | battery pack, OK, electronics blown |
| APC BackUPS CS 500 | 500 | 300 | none |
| APC BackUPS CS 500 | 500 | 300 | none |
| APC BackUPS CS 500 | 500 | 300 | none |
Current server stock
Currently (February 2010) there are the following servers/appliances/whatever in service:
| host | Make & model | Power (VA) | Power (W) | Heat (BTU) | Notes |
|---|
| gulo | Compaq ProLiant 1600 | 503 | 352 | 1202 | to be dismitted |
| meles | Gigabyte GS-SR202 | 394 | 276 | 943 | redundant PSU |
| eira | Sun Fire X2200 ME | 300 | 210 | 717 | - |
| gulo II | Sun Fire X4140 | 551 | 386 | 1318 | redundant PSU, to be deployed |
| (LAN switch) | HP ProCurve 5304xl | 900 | 630 | 2152 | - |
| mellivora | Buffalo TeraStation Live | 85 | 60 | - | - |
| pastor | OPNwall - m0n0wall appliance | 7 | 5 | - | - |
Note: power rating has been calculated using APC
UPS selector.
Future UPS assignment
Once gulo II will be deployed, and gulo will go out of service, the UPS assigment will be as follows:
| host | Make & model | Power (VA) | Power (W) | UPS assigned | Notes |
|---|
| gulo II | Sun Fire X4140 | 551 | 386 | two BackUPS RS 800 | redundant PSU, redundant UPS.
UPS are "smart-signaling" USB, set up and configure apcupsd.
Eventually, this host will broadcast in case of power failures. |
| eira | Sun Fire X2200 ME | 300 | 210 | BackUPS ES 700 | keep existing UPS |
| meles | Gigabyte GS-SR202 | 394 | 276 | two BackUPS 650 | redundant PSU, redundant UPS.
UPS are "dumb-signaling" RS-232, check and build cables. Remember that meles has only two RS-232 ports, and one is on the front panel and is needed to control pastor. |
| mellivora | Buffalo TeraStation Live | 85 | 60 | BackUPS CS 500, shared with pastor | UPS is "smart-signaling" USB. Check whether TeraStation Live understands it, there is still an USB port free on the rear panel. |
| pastor | OPNwall - m0n0wall appliance | 7 | 5 | Shares BACKUPS CS 500 with mellivora | Check whather OPNwall has some understanding of UPS, albeit with network signaling (no USB ports here). |
| (LAN switch) | HP ProCurve 5304xl | 900 | 630 | BackUPS CS 500 | Hope that this big sucker will do with this seemingly undersized UPS. Figure out if there is a way to make the switch UPS-aware (probably no...) |
Deployment plan: shut down everything but eira. Unplug all from the two BackUPS RS800. Plug gulo II power cords into each one of the two RS800. Plug in USB cables. Restart gulo II. Place eira's ES700 on top of the two RS800s. Add two BackUPS 650 into the rack, where once gulo was. Plug meles power cords into each one of the 650. Plug in a single RS-232 cable from the main UPS to meles RS-232 rear port. Restart meles. Add two BackUPS CS500 into the rack, above the two 650s. Plug the HP switch into one. Plug mellivora and pastor into the other. Add USB cable from the latter UPS to mellivora. Restart mellivora. (whew).
Remember that UPS discharge timings are to be re-made (when reconfiguring apcupsd) on gulo II, meles, mellivora and eira (order matters).
