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15 Intel® RAID Controller SRCSASPH16I Hardware Guide
Fault Tolerance
Table 4 shows the RAID Controller SRCSASPH16I 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, or 128 Kbyte
Maximum Number
of Concurrent
Commands
255
Support for Multiple
Initiators
Yes
Flexibility Drive migration, RAID level migration; drive roaming online capacity
expansion, without reboot
Background Services Rebuild, consistency check, initialization, migration, OCE, and patrol read
Cache Options Write-back or write-through, read ahead, adaptive read ahead, non-read
ahead, cache I/O or direct I/O
Table 3. Array Performance Features
Specification Intel
®
RAID Controller SRCSASPH16I
Table 4. Fault Tolerance Features
Specification Intel
®
RAID Controller SRCSASPH16I
Self Monitoring
Analysis and Reporting
Technology (SMART)
support
Detects up to 70% of all predictable disk drive failures and monitors the
internal performance of all motors, heads, and drive electronics.
Optional Battery
Backup
Intel
®
RAID Smart Battery cache backup. Trickle / fast charging.
Charge indicator.
Drive Replacement Auto detection of hard drive failure; hot-plug, hot-swap. User set rebuild
rate.
Drive Rebuild Using
Hot Spares
Automatic at drive failure; dedicated per array; global per 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
Power Conservation Staggered spin-up, lower power requirements.