4.1SMART Technology

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.

4.2Configuration on Disk

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.

4.3Configuration Features

Table 4.1 contains the configuration features for the MegaRAID 320-2.

Table 4.1

Configuration Features

 

 

 

 

 

Specification

 

 

Feature

 

 

 

 

RAID levels

 

 

0, 1, 5, 10, and 50

 

 

 

SCSI channels

 

2

 

 

 

Maximum number of drives per channel

 

15

 

 

 

Array interface to host

 

PCI 2.2

 

 

 

PCI bus master

 

Supports write invalidate

 

 

 

Drive interface

 

Wide Ultra320

 

 

 

Upgradable cache memory sizes

 

32, 64, 128, or 256 Mbytes

 

 

 

Cache function

 

Write-back, Write-through, Adaptive

 

 

 

Read Ahead, Non Read Ahead,

 

 

 

Read Ahead

 

 

 

SMART Technology

4-3

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