Intel RS25DB080 Hardware User Guide - Page 36

Specification Cache options Intel® RAID Controller RS25DB080 • Write-back or Write-through • Read Ahead • Adaptive Read Ahead • Non Read Ahead • Cache I/O or Direct I/O • Disk Cache Fault Tolerance Table 10. Fault Tolerance Features Specification Self Monitoring Analysis and Reporting Technology (SMART) support Optional Battery Backup Drive Replacement Drive Rebuild Using Hot Spares Error Checking and Indication Intel® RAID Controller RS25DB080 • Detects up to 70% of predictable disk drive failures • Monitors the internal performance of all motors, heads, and drive electronics. • Intel® RAID Smart Battery AXXRSBBU9 cache backup • Up to 48 hours of data retention, 'Gas Gauge' • Auto detection of failure • Hot-plug • Hot-swap • Automatic at fail • Dedicated per Array • Global for any array • Auto-resume of initialization or rebuild on reboot • 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 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 26 Intel® RAID Controller RS25DB080 Hardware User's Guide