HPE Smart Array P421 Controller (631674-b21, 633539-001) 6Gb/s, PCIe 3.0, Serial Attached SCSI (SAS) RAID controller that provides enterprise class-storage performance and data protection for HPE ProLiant Gen8 servers. SA P421 Controller features 2 external (Mini SAS) x8 wide port connectors and provides advanced storage functionality such as increased server uptime, online RAID level migration with flash back write cache, global online spare, and pre-failure warning. In addition, it facilitates easy migration and data compatibility among all models of HPE Smart Array controllers.

Brand: HPE
Model: 631674-b21, 633539-001
Product: Smart Array RAID Controller
Best for: HPE ProLiant Server
Interface: PCIe 3.0 X8
Backup Type: Flash Backed Cache
Number of Logical Drive Supported: Up to 64 X Logical Up to 200
Ports: 2 X 6gb/s Sas - Mini-sas External
Cache: 2 GB
Data Transfer Rate: 6Gbps
RAID Levels Supported: RAID 0, RAID 1, RAID 5, RAID 10, RAID 50

Compatible Systems:

DL160 Gen8, DL320e Gen8/v2, DL360e Gen8, DL360p Gen8, DL380e Gen8, DL380p Gen8, DL385p Gen8, DL560 Gen8, ML310e Gen8/v2, ML350e Gen8, ML350p Gen8