Smart Technology; Configuration On Disk; Configuration Features - LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Hardware Manual

4.1

SMART Technology

4.2 Configuration on Disk
4.3 Configuration Features
The MegaRAID Self Monitoring Analysis and Reporting Technology
(SMART) feature detects up to 70% of all predictable drive failures.
SMART monitors the internal performance of all motors, heads, and drive
electronics. You can recover from drive failures through online physical
drive migration.
Configuration on Disk (drive roaming) saves configuration information
both in nonvolatile random access memory (NVRAM) on the MegaRAID
SCSI 320-2, and on the disk drives it controls. If the MegaRAID SCSI
320-2 is replaced, the new MegaRAID controller can detect the actual
RAID configuration, maintaining the integrity of the data on each drive,
even if the drives have changed channel and/or target ID.
Table 4.1 contains the configuration features for the MegaRAID 320-2.
Table 4.1 Configuration Features
Specification
RAID levels
SCSI channels
Maximum number of drives per channel 15
Array interface to host
PCI bus master
Drive interface
Upgradable cache memory sizes
Cache function
SMART Technology
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Feature
0, 1, 5, 10, and 50
2
PCI 2.2
Supports write invalidate
Wide Ultra320
32, 64, 128, or 256 Mbytes
Write-back, Write-through, Adaptive
Read Ahead, Non Read Ahead,
Read Ahead
4-3