Browse Prior Art Database

Network UPS having HUB Function

IP.com Disclosure Number: IPCOM000123076D
Original Publication Date: 1998-May-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Funahashi, T: AUTHOR

Abstract

Net work UPS (Uninterruptible Power Supply) which has so-called HUB function whose power is linked with UPS control CPU (Central Processor Unit).

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Network UPS having HUB Function

   Net work UPS (Uninterruptible Power Supply) which has
so-called HUB function whose power is linked with UPS control CPU
(Central Processor Unit).

The UPS which has:
  1.  LAN (Local Area Network) Control interface.
  2.  Network HUB whose power is supplied from the independent
       source from that for workstations.

(EXAMPLE OF STRUCTURE)

                            (Image Omitted)

  1.  AC (Alternating Current) fail occurs.
       Send AC fail information to the Network UPS control server.
  2.  Shutdown request is sent to workstation/PC (Personal
       Computer).
  3.  After the shutdown complete, cut the AC power to the
       workstation/PC.  And send the complete information to
       the Network UPS control server.
  4.  If the UPS control server request the power off of UPS or
       pre-defined time passed, UPS shutdown by itself.

(MERIT)

   If the power of HUB is cut at the same time AC power to
Workstation is cut, UPS control server can't know the result of
shutdown power off of the workstation.

(SUCCESS OR FAIL)

   If the HUB AC is backuped by another UPS, HUB AC may be
stopped before the shutdown power off completed.  Also in this case,
UPS control server cannot know the result.  It is necessary to know
the result of shutdown to control the power on procedure.  If the
shutdown failed, it may take more time to wake up the system.  Using
this...