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.

Online Management Features:

• Online array expansion
• Online capacity expansion
• Online logical drive extension
• Online RAID level migration 
• Online stripe size migration
• Online mirror split, recombine, and rollback
• Online active drive replacement
• Online drive firmware upgrade
• Online and high performance offline Rapid Parity Initialization (RPI)
• Unlimited global online spares assignment
• User selectable expand and rebuild priority

Standard Features:

• User selectable RAID level and stripe size
• User selectable read and write cache sizes
• Supports Predictive Spare Activation