Avago Technologies MegaRAID SATA 150-4 (523) - Manual (Page 58)

3-10 BIOS Configuration Utility and MegaRAID Manager
Version 2.0 Copyright © 2003–2006 by LSI Logic Corporation. All rights reserved.
3.3.3.3 Enclosure Management
MegaRAID SATA 300 RAID controllers offer enclosure management
through the same protocols used for SCSI Accessed Fault-Tolerant
Enclosures (SAF-TE), using an I
2
C interface to communicate with the
storage enclosure processor (SEP). This feature allows you to use RAID
capabilities provided by the SATA 300 adapters in an enclosure
containing your hard drives.
The SATA 300 controllers uses the SAF-TE command protocol to
communicate control and status with the SEP. The SAF-TE protocol,
defined in the SATA II specification, communicates or performs SAF-TE
operations such as setting the drive state and turning the LED on or off
with the SEP device. SEP is a microcontroller that resides on a SATA
backplane. It senses drive insertion status, drive activity, and status LEDs
for each hard drive slot. The drive status is reported and LED control
performed according to commands through the I
2
C bus. LEDs are
located on the backplane near each hard drive slot.
3.3.3.4 Logical Drive Submenu Description
Select this option from the Configuration Utility Objects menu to select a
logical drive and to perform the actions in
Table 3.4 .
Table 3.4 Configuration Utility Logical Drive Submenu
Option Description
Initialize Use this option to initialize the selected logical drive. Initialize every logical drive that
you configure.
Check
Consistency Use this option to verify the correctness of the redundancy data in the selected logical
drive and have the CU automatically correct any differences found in the data. This
option is available if you are using RAID level 1, 5, 10, or 50.
View/Update
Parameters Use this option to display the properties of the selected logical drive. This option allows
you to modify the cache write policy, read policy, and the I/O policy.
Refer to Section 3.9, “FlexRAID Virtual Sizing,” on page 3-32 for more information on
virtual sizing.
You can access the Advanced Menu from the View/Update Parameters option.