The HPE Smart Array P440ar Controller is a Flexible Smart Array, 12Gb/s SAS RAID controller that provides enterprise-class storage performance, increased internal scalability with SAS Expander Card, and data protection for specific HPE ProLiant Gen9 rack and tower servers. It features eight internal physical links and delivers increased server uptime by providing advanced storage functionality, including online RAID level migration between any RAID levels with flash backed write cache (FBWC), global online spare, and pre-failure warning.
The Gen9 family of controllers supports the HPE Smart Storage Battery. With HPE Smart Storage Battery, multiple Smart Array controllers are supported without needing additional backup power sources for each controller, resulting in simple upgrade process.

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Transfer rate	12Gb/s SAS per physical link 6Gb/s SATA per physical link PCI Express Gen3 x8 link width
Form factor	Flexible card
Ports	Internal: 8 physical links across 2 x4 ports
Cache	2GB Flash-backed write cache
RAID levels	0, 1, 10, 5, 50, 6, 60, 10 ADM
Servers supported	HPE ProLiant DL360 Gen9 HPE ProLiant DL380 Gen9 HPE ProLiant DL560 Gen9 HPE ProLiant ML350 Gen9
Product dimensions (H x W x D)	4.09 in x 5.3 in x 1.23 in
Weight	1 lb