CFI TERA STOR SATA RAID IV Guía de usuario descargar pdf (Pagina 34)

24 Intel® RAID Controller RS2SG244 Hardware User’s Guide

Fault Tolerance

Table 10. Fault Tolerance Features

Electrical Characteristics

All power is supplied to the Intel

RAID controller RS2SG244 through the PCI Express

3.3V rails and the 12V rail. Onboard switching regulator circuitry operating from the 3.3V

rails and the 12V rail provide the necessary voltages. The following states determine the

typical current consumption of the controller:

• State 1: During a consistency checks of all RAID 5 virtual drives at one time

• State 2: While sitting idle at the DOS prompt

Cache options • Write-back or Write-through

• Read Ahead

• Adaptive Read Ahead

• Non Read Ahead

• Cache I/O or Direct I/O

• Disk Cache

Specification Intel

RAID Controller RS2SG244

Specification Intel

RAID Controller RS2SG244

Self Monitoring Analysis and

Reporting Technology (SMART)

support

• Detects up to 70% of predictable disk drive failures

• Monitors the internal performance of all motors, heads,

and drive electronics.

Optional Battery Backup • Intel

RAID Smart Battery AXXRSBBU7 cache backup

• Up to 48 hours of data retention, ‘Gas Gauge’

Drive Replacement • Auto detection of failure

• Hot-plug

• Hot-swap

Drive Rebuild Using Hot Spares • Automatic at fail

• Dedicated per Array

• Global for any array

• Auto-resume of initialization or rebuild on reboot

Error Checking and Indication • Parity generation and checking, automatic consistency

checking

• Patrol reads

• Activity and fault LEDs

• Multiple retries

• Logs in NVRAM, event log, CIM, Smart, Intel

RAID

Web Console 2

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