Intel RS25NB008 User Guide - Page 32

Fault Tolerance, Table 9. Fault Tolerance Features

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Specification Intel® RAID Controller RS25NB008 Maximum size of I/O requests 6.4 Mbytes in 64 Kbyte stripes Maximum queue tags per drive As many as the drive can accept Stripe sizes 8, 16, 32, 64, 128, 256, 512, or 1024 KB Maximum concurrent 255 commands Support for multiple initiators Performance Flexibility Background services Cache options Yes Native command queuing • Drive migration • RAID level migration • Drive Roaming • Online Capacity Expansion - without reboot • Rebuild • Consistency Check • Migration • OCE • Patrol Read • 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 9. Fault Tolerance Features Specification Self Monitoring Analysis and Reporting Technology (SMART) support Optional Battery Backup Drive Replacement Intel® RAID Controller RS25NB008 • 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 22 Intel® RAID Controller RS25NB008 Hardware User's Guide

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Intel® RAID Controller RS25NB008 Hardware User’s Guide
Fault Tolerance
Table 9. Fault Tolerance Features
Maximum size of I/O requests
6.4 Mbytes in 64 Kbyte stripes
Maximum queue tags per
drive
As many as the drive can accept
Stripe sizes
8, 16, 32, 64, 128, 256, 512, or 1024 KB
Maximum concurrent
commands
255
Support for multiple initiators
Yes
Performance
Native command queuing
Flexibility
•
Drive migration
•
RAID level migration
•
Drive Roaming
•
Online Capacity Expansion - without reboot
Background services
•
Rebuild
•
Consistency Check
•
Migration
•
OCE
•
Patrol Read
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 RS25NB008
Specification
Intel
®
RAID Controller RS25NB008
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