About Controller Policies - 3Ware 9550SXU-12 User Manual

Configuring Your Controller

About Controller Policies

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5 On the pop-up menu, select
The Controller Information page displays.
Figure 37. Controller Information page
The following policies affect all units and drives on a controller and can be
adjusted as appropriate for your equipment. Controller policies are shown at
the bottom of the Controller Settings page in 3DM (Figure 38) and on the
Policy Control screen in 3BM (Figure 39).
• Determines whether the Auto Rebuild policy is enabled or
Auto Rebuild.
disabled. When disabled, degraded units can only be rebuilt with
designated spares. When enabled, the controller firmware will
automatically attempt to rebuild a degraded unit if there is no spare, using
either an available drive or a failed drive.
• Auto-Carving. Determines whether the auto-carving policy is enabled or
disabled. When it is enabled, any unit larger than a specified size (known
as the carve size) is broken into multiple volumes that can be addressed
by the operating system as separate volumes. The default carve size is 2
TB.
This auto-carving feature is sometimes referred to as multi-LUN, where
each volume that is created is referred to as a "LUN."
• (Referred to as Carving Factor in 3BM) Sets the size for
Carve Size.
dividing up units into volumes when Auto-Carving is enabled. This
setting can be between 1024 GB and 32768 GB.
•
Staggered spin-up.
Standby power management state to minimize in-rush current at power-up
and to allow the controller to sequence the spin-up of drives. Compatible
drives are sent a spin up command based on the settings specified with the
3ware SAS/SATA RAID Software User Guide, Version 9.5.1
and press
Controller
Spin-up allows drives to be powered-up into the
.
Enter