Lacie 12big Rack Fibre 8 User Manual - Page 51

Power Down

Get Lacie 12big Rack Fibre 8 PDF manuals and user guides View all Lacie 12big Rack Fibre 8 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 51 highlights

LaCie 12big Rack Fibre 8 User Manual Operation page 51 3.6. Power Down The enclosure can be powered down at any time and if writeback cache contents are present, the contents will be preserved by the internal backup battery. However, you should not power down the RAID Controller(s) if there is I/O activity in progress. The preference would be to wait until the cache contents has been written to the disks before completing the shutdown. If the enclosure is left in powered off state for an extended period, the battery will discharge and the cached data will be lost. If the backup battery is allowed to discharge, upon power up the writeback cache will be disabled; however once the battery is recharged, writeback cache is automatically re-enabled. To ensure that the cache is flushed to disks, stop all host I/O operations from the applications. Allow sufficient time for the controller to write the cache data to the drives. This will prevent the battery from being discharged. 1. From the StorView main screen, click the Controller icon. The Controller Information screen appears, where you will click the Shutdown button under that controller's column. If dual controllers are in use or installed be sure to click the Shutdown button under each controller. This will provide a graceful shutdown for the RAID Controllers. IMPORTANT INFO: You may also perform a graceful shutdown of the controllers from the VT-100 RAID Configuration Utility. As both interfaces support this feature. 2. Once the system has completed its shutdown, power down the enclosures by switching the power cooling module switches to the OFF positions. To completely isolate power from the enclosure, disconnect the power cords. Fig. 66 - Embedded StorView Setup Wizard - Initialize Systems Screen

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
LaCie 12big Rack Fibre 8
Operation
User Manual
page 51
3.6. Power Down
The enclosure can be powered down at any time and if writeback
cache contents are present, the contents will be preserved by the
internal backup battery. However, you should not power down the
RAID Controller(s) if there is I/O activity in progress. The preference
would be to wait until the cache contents has been written to the
disks before completing the shutdown.
If the enclosure is left in powered off state for an extended period,
the battery will discharge and the cached data will be lost. If the
backup battery is allowed to discharge, upon power up the write-
back cache will be disabled; however once the battery is recharged,
writeback cache is automatically re-enabled.
To ensure that the cache is flushed to disks, stop all host I/O opera-
tions from the applications. Allow sufficient time for the controller to
write the cache data to the drives. This will prevent the battery from
being discharged.
1. From the StorView main screen, click the
Controller
icon. The
Controller Information screen appears, where you will click the
Shutdown
button under that controller’s column. If dual con-
trollers are in use or installed be sure to click the
Shutdown
but-
ton under each controller. This will provide a graceful shutdown
for the RAID Controllers.
IMPORTANT INFO:
You may also perform a graceful shutdown
of the controllers from the VT-100 RAID Configuration Utility. As
both interfaces support this feature.
2. Once the system has completed its shutdown, power down the
enclosures by switching the power cooling module switches to
the OFF positions. To completely isolate power from the enclo-
sure, disconnect the power cords.
Fig. 66 - Embedded StorView Setup Wizard - Initialize
Systems Screen