HP NetRAID 1 Controller - Manual (Page 27)

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Rebuild Rate: This option allows you to set the RAID rebuild drive rate for rebuilding a
failed drive. The rebuild rate determines the percentage of system resources devoted to the
rebuild. A 100% rebuild rate means that 100% of the system’s resources are applied to the
rebuild, leaving no resources available for other tasks until the rebuild completes. The default
rebuild rate is 50%.
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Rescan: The currently selected adapter rescans its SCSI channels to make sure that all drive
configuration information is current.
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View Log: Selecting this menu option displays the contents of the View Log File, which
records adapter activities and conditions such as battery backup charge (HP NetRAID only),
logical drive properties, and changes to configurations along with the date and time changes
are made.
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Alarm Control: There are two onboard tone generator settings, described below.
◊ Enable/Disable Alarm: Choose this option to enable or disable the onboard tone
generator. The default setting is Enabled.
◊ Silence Alarm: This setting stops the alarm when it goes off. To silence a sounding
alarm, choose Alarm and Silence.
Physical Drives Menu Options
The physical drive menu options are described below.
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Rebuild: To rebuild one or more failed disk drives, choose the Rebuild option from the
Physical Drv Menu. Select Cancel to stop the rebuild process at any time. The drive will
return to its original status before the rebuild began. A RAID 1, 3, 5, 10, 30 or 50
configuration has built-in redundancy. If a drive in one of these RAID groups fails, the RAID
subsystem continues to work but no additional redundancy is provided. Another drive failure
will bring the system down. Rebuilding the failed drive replaces and adds it into the RAID
system. The rebuild process can take place while the RAID system is still running, although
performance may be affected.
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Format: Choose the Format option from the Physical Drv Menu only to low-level format one
or more physical drives. Since most SCSI disk drives are low-level formatted at the factory,
this step is usually not necessary. You typically must format a disk if:
◊ The disk drive was not low-level formatted at the factory
◊ There is an excessive number of media errors detected on the disk drive
NOTE You do not need to use the Format option if you simply want to erase existing
information on your hard drives, such as a DOS partition. That information is
erased when you initialize the logical drive(s). Hewlett-Packard drives are
factory-formatted.
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Change Status: Select this option from the Physical Drv Menu to change the status of the
following functions:
◊ Make Online: Puts the drive online and available to the adapter
◊ Make Offline: Puts the drive offline and unavailable to adapter
◊ Spin Up: Sets the method and timing for spinning up the hard disk drives
◊ Spin Down: Sets the method and timing for spinning down the hard disk drives