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Miscellaneous Functions
007-4382-002
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When the remaining battery power (in minutes) falls below the Battery Threshold
(minutes) value entered, a low battery power alarm is triggered and is displayed in the
Battery Backup Status portion of the Display Environmental Subsystem Information
window (see Figure 3-85 on page 120 and Figure 3-86 on page 121).
The buttons at the bottom of the screen operate as follows:
•
Save Threshold: saves the battery threshold value entered in the text box.
Note:
The specified threshold value entered must not exceed the battery’s maximum
power value in minutes.
•
Recondition Battery: conditions the battery so that it can achieve maximum life.
Conditioning involves fully discharging the battery, then recharging it.
Note:
While the battery is being reconditioned, the system cache operates in the
conservative cache mode (write-through) for the duration of the reconditioning process.
•
Charge Battery: initiates a battery charge cycle.
•
Shutdown Battery: this option shuts down charging to the battery. The Battery
Backup Unit (BBU) maintains memory content in the presence of AC power
failures, AC power glitches, and short power outages. This protection is important
when the write-back cache is enabled, and data is waiting to be flushed to the disk
drive. Therefore SGI does not recommend or support use of the Shutdown Battery
option provided in TPM 1.2 with 7.75 firmware. If a shutdown of the battery is
performed, memory retention is not guaranteed if power loss occurs. Any data in
the controller’s on-board cache memory will be lost.
Summary of Contents for TP9100
Page 1: ...TPM Installation Instructions and User s Guide for TP9100 007 4382 002 ...
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Page 60: ...44 007 4382 002 3 Using TPM Figure 3 10 All Drive Packs Created 7 01 and Later Firmware ...
Page 65: ...Configuration Functions 007 4382 002 49 Figure 3 15 All LUNs Defined 6 14 Firmware ...
Page 87: ...Configuration Functions 007 4382 002 71 Figure 3 40 Initialization Progress 6 14 Firmware ...
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