Avago Technologies 3ware SAS 9750-4i - Manual (Page 57)

Controller Object Commands
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/c x show rebuild
9000 series controllers support background tasks and allow you to schedule a
regular time when they occur.
Rebuild is one of the supported background tasks. Migrate and initialize are
other background tasks that follow the same schedule as rebuild. Other
background tasks for which there are separate schedules are verify and
selftest. For each background task, up to 7 time periods can be registered,
known as slots 1 through 7. Each task schedule can be managed by a set of
commands including add, del, show and set a task. Background task
schedules have a slot id, start-day-time, duration, and status attributes.
For details about setting up a schedule for background rebuild tasks, see
“Setting Up a Rebuild Schedule” on page 65.
Rebuild activity attempts to (re)synchronize all members of redundant units
such as RAID-1, RAID-10, RAID-5, RAID-6, and RAID-50. Rebuild can be
started manually or automatically if a spare has been defined. Scheduled
rebuilds will take place during the scheduled time slot, if enabled the
schedules are enabled. For in depth information about rebuild and other
background tasks, see “About Background Tasks” in the 3ware SATA+SAS
RAID Controller Card Software User Guide, Version 10.0.
The show rebuild command displays the current rebuild background task
schedule as illustrated below.
//localhost> /c1 show rebuild
Rebuild Schedule for Controller /c1
========================================================
Slot Day Hour Duration Status
--------------------------------------------------------
1 Mon 2:00pm 10 hr(s) disabled
2 Thu 7:00pm 18 hr(s) disabled
3 - - - disabled
4 - - - disabled
5 - - - disabled
6 Mon 1:00am 4 hr(s) disabled
7 Sun 12:00am 1 hr(s) disabled
A status of “disabled” indicates that the task schedule is disabled. In this case,
the controller will not use the defined schedule timeslots. If the rebuild
command is entered manually, rebuilding will start within 10 to 15 minutes. It
will begin automatically if a rebuild is needed and a proper spare drive is set
up.
If the rebuild schedule is enabled while a rebuild process is underway, the
rebuild will pause until a scheduled time slot.