Avago Technologies 3ware SAS 9750-16i4e - Manual (Page 164)

Chapter 8. Maintaining Units
152 3ware SATA+SAS RAID Controller Card Software User Guide, Version 10.2
Using Auto Verification
Auto-Verify is available as a unit policy that can help insure that a unit is
verified on a regular basis. This is important, as it can provide early warning
of unstable units and possible data loss.
Auto-Verify is enabled on a per-unit basis, and works in conjunction with the
Verify Schedule, which is set on a controller-wide basis. Two verify schedules
settings are available (Basic and Advanced), and Auto-Verify works
differently, depending on which is selected.
The Basic Verify schedule (enabled, by default), provides a weekly day and
time for Auto-Verify to occur. When the Basic schedule is used, Auto-Verify
will start a verify at the designated time, and run until it has finished.
For users who need more control over when Verify tasks run, an Advanced
Verify schedule is also available, which gives you the ability to define seven
times during the week when verifications can occur, and allows you to specify
the duration of each, effectively creating a series of "schedule windows". This
is useful if you want to insure that background tasks such as verification occur
during times of low system usage. When you use the Advanced Verify
schedule, if a verify does not have time to complete during a scheduled time
window, it will pause until the next scheduled time, to resume verifying.
This distinction between Basic and Advanced Verify Scheduling is new in
9.5.1. In previous versions, there was one type of Verify Scheduling, which
functioned as the "Advanced" version does in 9.5.1.
For more details about how to set the Verify Scheduling option, see “Selecting
Advanced or Basic Verify Schedules” on page 166.
Starting a Verify Manually
Verification of units can be done automatically, on a schedule, or can be
started manually, as described below. You can manually start a verify through
either 3DM2 or 3BM. (See “Enabling or Disabling Auto-Verify for a Unit” on
page 107 and “Scheduling Background Tasks” on page 163.)
Note: Unless you have a specific need for the Advanced Verify schedule, it is
recommended that you enable Auto-Verify for units, and that you use Basic Verify
scheduling, in order to insure weekly verification of your units.
If Auto-Verify is disabled for a unit, then verification will only run if you start it
manually or in the event of an unclean shutdown.
Note: If the unit has not previously been initialized and you manually select Verify
Unit , the initialization process starts .