Grass Valley PFR 500/E Dec 12 2002 - Manual (Page 34)

Chapter 2 PFR500/E Installation Information
34 PFR 500/E Instruction Manual 20 September 2002
PFR500/E power-down
IMPORTANT: If your PFR 500/E system is part of a Media Area Network, refer to
the Media Area Network Instruction Manual for instructions on shutting down the
Media Area Network before powering down a PFR 500/E.
To power-down the PFR 500/E correctly:
1. Stop all read/write activity to the PFR500/E storage system.
2. Power-down the RAID storage system by powering-down the PFR500 Controller
chassis prior to, or at the same time as with the PFR 500E Expansion chassis.
>>> CAUTION: You must always power down the PFR 500 RAID Controller chassis
prior to, or at the same time as the PFR500E Expansion Chassis. Failure to do so
may force some LUNs offline. This will cause loss of access to the media file system
when the system is powered up again. Refer to “Forcing LUNs online: Recovery
from improper power- sequence” in Chapter 3 of the Profile XP System Guide.
To turn on power, refer to “PFR500/E power-up and initialization” on page 33 .
Battery Backup recharge
Every PFR 500/E RAID controller includes a backup battery so that if electrical power
is lost, data stored in cache memory will be saved.
Data store cache is not used in Profile storage systems, so the Battery Backup module is
not used, even though it ships as part of the LBB module.