The HPE Smart Array P741m is a PCI-Express (PCIe) 3.0 mezzanine card supporting direct attached and shared storage for the HPE ProLiant Gen9 BladeSystem servers. It is one of the highest performing controllers in the HPE Smart Array portfolio capable of supporting 12Gb/s level bandwidth and provides enterprise level reliability, connectivity, and storage performance for HPE Gen9 Blade servers through its support of the latest SCSI technology and advanced RAID capabilities. The P741m can support up to 227 zoned direct attached SAS or SATA drives, tape drives, and can connect to D3600, D3700, D6000, and D6020 Disk Enclosures.

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Ports	External: 8 SAS/SATA physical links across 4 x2 ports
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 2 GiBytes 72-bit wide DDR3-1866MHz Flash-Backed Write Cache provides up to 12.8GB/s maximum cache bandwidth Read ahead caching Write-back caching
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 User selectable RAID level and stripe size User selectable read and write cache sizes Supports Predictive Spare Activation