Just thought I would post an update on this as I am working on this to match via jquery and automatically select the appropriate shipping carrier. I compiled a list of the matching regex for my project and I have tested a lot of tracking numbers across UPS FedEX and USPS. If you come across … Read more
How long should the electronics/relays/etc in an line-interactive UPS last? You will find it difficult to get an answer to this question because it depends on too many factors. Quality of components used in the UPS, the quality of the manufacturing process, shipping/storage between factory and consumer, handling during installation, environment differences (temperature, airflow, input … Read more
The standard answer for this is “not at all”. Fix the software to handle restarts in random order. If you really need SOME servers to start first (example: Active Directory) put them on USV’s that are possibly surviving a LOT longer. A low power atom based server is good enough as Active Directory controller and … Read more
UPS equipment The UPSs will have some power filtering built in – check the spec with the manufacturer. If your standby generator is upstream of the UPS it should not adversely affect the quality of power coming from the UPS. If you want to buy new UPS equipment, consider looking at hardware that will take … Read more
It allows the raid card to remember what is in its buffers ( that hasnt been sync’d to disk ) Its very important for people who need high data integrity.. Or to save your DB from certain types of corruption.. (Basically whats on disk, is on disk – so thats safe.. The problem is when … Read more
In addition to amcnabb’s answer, higher-end PDUs (though not the one you linked to) will also give you the possibility of not only monitoring (over the network) the current draw for each socket, but also cutting and restoring power to certain sockets remotely.
Answers to this may vary. But I actually work in warehousing and logistics environments, and I’ll typically plan new server rooms to have a high capacity central UPS (6kVA or more), usually an online (double-conversion) model. Devices of this tier have UPS management interfaces, so it makes sense to tie those in to SNMP and … Read more
According to the manual: Replacing the Battery Module This UPS has an easy to replace, hot-swappable battery module. Replacement is a safe procedure, isolated from electrical hazards. You may leave the UPS and connected equipment on for this proce- dure.
You should be safe. It is always OK to put a lower load on a higher rated receptacle. (At the proper voltage that is. Don’t mix 230V and 115V). Just think of it this way: If it wasn’t OK nobody could plug a phone charger (about 2 Amp max) in a standard wall-outlet (10 Amps … Read more
The typical scenario implemented when using UPS is: On power loss, the UPS notifies the software component on the system(s) connected to it. If the power is lost longer than n seconds, the UPS driver notifies the UPS and halts the system without powering it off (this is important). UPS waits m seconds for the … Read more