Array Performance Features

Specification	Intel® RAID Controller SRCSAS144E
Redundant	32 Kb NVRAM and config on disk (COD) store RAID configuration.
Configuration

Enclosure	I2C out-of-band, SES2 in-band, SAF-TE (LEDs)
Management

Table 3 shows the RAID Controller SRCSAS144E array performance features.

Table 3. Array Performance Features

Specification	Intel® RAID Controller SRCSAS144E
PCI Express* Host	2.5 Gigabit/s per lane
Data Transfer Rate

Drive Data Transfer	3 Gigabit/s per lane
Rate

Maximum	26 elements
Scatter/Gathers

Maximum Size of I/O	6.4 Mbytes in 64 Kbyte stripes
Requests

Maximum Queue	As many as the drive can accept
Tags per Drive

Stripe Sizes	8, 16, 32, 64, or 128 Kbyte

Maximum Number	255
of Concurrent
Commands

Support for Multiple	Yes
Initiators

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

15	Intel® RAID Controller SRCSAS144E Hardware Guide