Dell PowerVault MD3000i User's Guide - Page 28

Battery Settings, Starting or Restarting the Host-Agent Software in Windows

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Battery Settings A smart battery backup unit (BBU) can perform a learn cycle. The smart BBU module includes the battery, a battery gas gauge, and a battery charger. The learn cycle calibrates the smart battery gas gauge so that it provides a measurement of the charge of the battery module. A learn cycle can only start when the battery is fully charged. The learn cycle completes the following operations: • Discharges the battery to a predetermined threshold • Charges the battery back to full capacity A learn cycle starts automatically when you install a new battery module. Learn cycles for batteries in both RAID controller modules in a duplex system occur simultaneously. NOTE: It might take several hours for a learn cycle to complete. NOTE: Write caching on all virtual disks is disabled during this time. Learn cycles are scheduled to start automatically at regular intervals, at the same time and on the same day of the week. The interval between cycles is described in weeks. Use the following guidelines to adjust the interval: • You can use the default interval. • You can run a learn cycle at any time. • You can set the learn cycle earlier than the currently scheduled time. • You cannot set the learn cycle to start more than seven days later than the currently scheduled time. To modify the settings, click the Tools tab → Change Battery Settings. Starting or Restarting the Host-Agent Software in Windows The host-agent software module is the software component that resides on the server or management station that communicates with the MD3000 or MD3000i external storage enclosures. The SMagent software automatically starts after you reboot the host. If you add a storage array after the host server has started, or iSCSI sessions are created while the SMagent is running, or the 28 Storage Array

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28
Storage Array
Battery Settings
A smart battery backup unit (BBU) can perform a learn cycle. The smart BBU
module includes the battery, a battery gas gauge, and a battery charger. The
learn cycle calibrates the smart battery gas gauge so that it provides a
measurement of the charge of the battery module. A learn cycle can only start
when the battery is fully charged.
The learn cycle completes the following operations:
•
Discharges the battery to a predetermined threshold
•
Charges the battery back to full capacity
A learn cycle starts automatically when you install a new battery module.
Learn cycles for batteries in both RAID controller modules in a duplex system
occur simultaneously.
NOTE:
It might take several hours for a learn cycle to complete.
NOTE:
Write caching on all virtual disks is disabled during this time.
Learn cycles are scheduled to start automatically at regular intervals, at the
same time and on the same day of the week. The interval between cycles is
described in weeks.
Use the following guidelines to adjust the interval:
•
You can use the default interval.
•
You can run a learn cycle at any time.
•
You can set the learn cycle earlier than the currently scheduled time.
•
You cannot set the learn cycle to start more than seven days later than the
currently scheduled time.
To modify the settings, click the
Tools
tab
→
Change Battery Settings
.
Starting or Restarting the Host-Agent Software in
Windows
The host-agent software module is the software component that resides on
the server or management station that communicates with the MD3000 or
MD3000i external storage enclosures. The SMagent software automatically
starts after you reboot the host. If you add a storage array after the host server
has started, or iSCSI sessions are created while the SMagent is running, or the