IBM DCS3860, Инструкция по установке, использованию и обслуживанию

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The learn cycle takes up to three hours. During this time, the cache will be active if
the battery is in optimal condition. If the learn cycle is interrupted, the current
learn cycle will be terminated and the battery will perform a new learn cycle at the
next scheduled interval (eight weeks from the current learn cycle). A learn cycle
interruption is caused by removing the battery from the controller chassis, resetting
the power to the storage system, or if an storage enclosure or battery overheats.
Data caching starts after the battery is charged to the programmed voltage level,
which occurs when the storage system power is first turned on, when a new
battery is installed to replace a failed battery, or when the system power is turned
on after months of inactivity.
Attention:
Write caching is suspended while a battery pack is either charging or
self-testing.
Turning off the storage system
The DCS3860 is designed to run continuously. After you turn it on, do not turn it
off. Turn off the power only in the following situations:
v Instructions in a hardware or software procedure require that you turn off the
power.
v
An IBM technical-support representative instructs you to turn off the power.
v
A power outage or emergency situation occurs, see
“Restoring power after an
unexpected shutdown” on page 73
.
Attention: Except in an emergency, never turn off the power if any amber (needs
attention) LEDs are lit. Correct the fault before you turn off the power. Use the
Storage Manager software and the amber LEDs to check the overall status of the
DCS3860 . All LEDs should be green on the front of the storage system. If they are
not, use the Storage Manager software to diagnose the problem so that the
DCS3860 will power-on correctly later.
(L003)
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide