HPE MR416i-p Gen11 x16 Lanes 8GB Cache PCI SPDM Plug-in Storage Controller

P47777-B21 is the HPE MR416i-p Gen11, a plug-in tri-mode storage controller with 8GB of flash-backed write cache. It is a half-height, half-length PCI card built on a Broadcom Aero ASIC, and it connects to the server through a PCIe Gen 4.0 x8 host interface. Two x8 SlimSAS ports carry 16 lanes, so up to 16 drives attach without an expander.

NVMe runs at 16 Gbps, SAS at 12 Gbps and SATA at 6 Gbps from the same controller. It handles RAID 0, 1, 10, 5, 50, 6 and 60 and also mixed mode, where RAID volumes and JBOD drives share the card, with up to 64 volumes and both read-ahead and write-back caching. An energy pack for the cache is optional: the 96W lithium-ion battery kits P01366-B21 (145 mm cable) and P01367-B21 (260 mm cable), or the hybrid capacitor kits P02377-B21 (145 mm) and P02381-B21 (260 mm). The kit includes a backup power cable. Drives that support 24G SAS are accepted but run at no more than 12 Gbps on this controller.

SPDM lets iLO 6 authenticate the card by certificate, and a hardware root of trust protects against malicious firmware. Spare number P47951-001 is the MR416i-p Gen11 controller assembly. The OCP 3.0 form of the same controller is P47781-B21, and the MR216i-p without cache is P47785-B21. The ProLiant DL380 Gen11 and DL360 Gen11 both carry it among their tri-mode controller options.