HPE Smart Array P841 Controller

The HPE Smart Array P841 Controller is a full height, PCIe3 x8, 12Gb/s Serial Attached SCSI (SAS) RAID controller that provides enterprise-class storage performance, increased external scalability, and data protection for select HPE ProLiant Gen9 rack and tower servers. It features sixteen external physical links and delivers increased server uptime by providing advanced storage functionality, including online RAID level migration (between any RAID levels) with 4GB flash back write cache (FBWC), global online spare, and pre-failure warning. This controller includes transportable FBWC allowing the data in the cache to be migrated to a new controller.

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.

Key Features

- Storage interface (SAS/SATA)

- 16 physical links across 4 x4 external ports

- 12Gb/s SAS, 6Gb/s SATA technology

- Mix-and-match SAS and SATA drives to the same controller

- Support for SAS tape drives, SAS tape autoloaders and SAS tape libraries

- 4 GiBytes Flash-Backed Write Cache (FBWC)

- PCI Express Gen3 x8 link

- RAID 0, 1, 10, 5, 50, 6, 60, 10 ADM (Advanced Data Mirroring)

- RAID or HBA mode

- Legacy and UEFI boot operation

- Up to 200 physical drives

- Up to 64 logical drives

- Up to 8 daisy chained HPE D3600 Disk Enclosure and HPE D3700 Disk Enclosure in dual domain configuration

- HPE SmartCache (license included)

- HPE Secure Encryption (optional license)

- HPE SSD Smart Path

- VMware Virtual SAN certified

- Rapid Parity Initialization (RPI)

- Rapid rebuild

- Drive Erase

- Performance Optimization-Degraded Reads and Read Coalescing

- Power Efficiency

- Seamless upgrades to and from other HPE Smart Array controllers

- Recovery ROM to protect against controller ROM corruption

- Full-height, half-length standard PCI Express plug-in card

- Dimension (excluding bracket): 7.5 in x 9.5 in x 2.25 in (19.05 cm x 24.13 cm x 5.72 cm)

Ports

- External: 16 SAS/SATA physical links across 4 x4 port

Performance

- 12Gb/s SAS (1200 MB/s theoretical bandwidth per physical lane)

- 6Gb/s SATA (600 MB/s theoretical bandwidth per physical lane)

- PCI Express Gen3 x8 link width

- 4 GiBytes 72-bit wide DDR3-1866 Flash Back Write Cache provides up to 14.9GB/s maximum cache bandwidth

- Read ahead caching

- Write-back caching