Dell PowerVault 715N (Rackmount NAS Appliance) - Manual (Page 30)

The 384 KB of RAM located between 640 KB and 1 MB. If the system has an Intel386 or higher microprocessor, a utility
called a memory manager can create UMBs in the upper-memory area, in which you can load device drivers and memory-
resident programs.
UPS
Abbreviation for uninterruptible power supply. A battery-powered unit that automatically supplies power to your system in
the event of an electrical failure.
utility
A program used to manage system resources—memory, hard drives, or printers, for example.
V
Abbreviation for volt(s).
W
Abbreviation for watt(s).
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