Intel RS25DB080

26 Intel® RAID Controller RS25DB080 Hardware User’s Guide
Fault Tolerance
Table 10. Fault Tolerance Features
Electrical Characteristics
All power is supplied to the adapter via the PCI Express 3.3V and 12V rail. Necessary
Voltages are provided by onboard switching regulator circuitry operating off of 12V and
3.3V rails.
The following states determine the typical current consumption of the board:
• State 1. During BBU fast charge
• State 2. During initialization of all RAID 5 logical drives simultaneously
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 RS25DB080
Specification Intel
®
RAID Controller RS25DB080
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 AXXRSBBU9 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