smart array p420 on PCI-E x4 functional?

[jchvatal]

Is the Smart Array P420 functional in the PCI-E 3.0 x8 slot, which has only x4 lines? 
And what are the consequent limitations in speed, functionality?

thank you very much for your respond

[Srinath_Raju]

Hi jchvatal ,

Pleaase find below the key features of P420 Controller

Key Features:

The P420 Controller supports up to 60 drives depending on the server implementation.
• Seamless upgrades from past generations and upgrades to next generation HPE high
performance and high capacity Serial Attached SCSI Smart Array controllers.
• 6Gb/s SAS technology delivers high performance and data bandwidth and contains full
compatibility with 6Gb/s SATA technology.
• x8 PCIe 3.0 host interface technology delivers high performance and data bandwidth up to 8
GB/s maximum bandwidth.
• Modular, easy-to-upgrade design lets you optimize performance by upgrading from 40-bit
512MB cache to 72-bit 1GB Flash Backed Write Cache or 72-bit 2GB Flash Backed Write Cache
(FBWC).
• Addition of the flash backed cache upgrade enables array expansion, logical drive extension,
RAID migration, and stripe size migration.
• Standard on the P420 are RAID 6 ADG, RAID 60 ADG, RAID 1 ADM, Capacity Expansion,
mirror split, recombine, and rollback in Online Mode, Drive Erase, Performance OptimizationDegraded Reads and Read Coalescing, Move/Delete any individual LUNS and Online Split
Mirror
• The HPE SSD Smart Path feature included in the Smart Array software stack improves SSD
read for all RAID levels and RAID 0 write operations by optimizing the path to each SSD
attached to the controller
• The HPE SmartCache licensed feature (available as an additional option) is a controller-based
read caching solution in a DAS environment that caches the most frequently accessed data
("hot" data) onto lower latency SSDs to dynamically accelerate application workloads.
• Mix-and-match SAS and SATA hard drives, lets you deploy drive technology as needed to fit
your computing environment.
• Software consistency on most current shipping Smart Array products: HPE Smart Storage
Administrator, HPE Systems Insight Manager (SIM), and Intelligent Provisioning.
• Low-profile PCI Express form factor - ships with a full size bracket for deployment in either a
low-profile or full sized slot.

Management Features:

Online array expansion (with FBWC)
• Online Advanced Capacity Expansion (with FBWC)
• Online logical drive extension (with FBWC)

Standard Features:

• Online stripe size migration (with FBWC)
• Online mirror split, recombine and rollback (with FBWC )
• Unlimited global online spare 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

Regards

Sr