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Green printed circuit board with silver PCIe x8 edge connector and two silver external SAS ports

HPE

HPE Smart Array P408e-p SR Gen10 RAID Controller 804405-B21

SKU CH-82MF-TS032 MPN 804405-B21

12 Gb/s SAS PCIe 3.0 x8 RAID controller with 4 GB flash-backed write cache and eight external lanes

  • Product typeConsumer Electronics
  • 12Gb/s SAS host interface maximises external drive throughput
  • PCIe 3.0 x8 connection delivers high-bandwidth controller performance
  • 4 GB flash-backed write cache protects data during power loss
  • Eight external SAS lanes enable flexible SAS and SATA drive attachment
  • Mixed Mode operation combines RAID and HBA functions simultaneously

HPE Smart Array P408e-p SR Gen10 Controller

The HPE Smart Array P408e-p SR Gen10 Controller is a 12Gb/s SAS RAID card that connects to externally attached drives through a PCI Express 3.0 x8 host interface. It provides eight external SAS lanes for SAS or SATA 600 devices and includes 4 GB flash-backed write cache. The controller supports advanced RAID levels and operates in Mixed Mode for simultaneous RAID and HBA operations.

Suited for external storage arrays.

This controller targets administrators who need to attach external SAS or SATA storage enclosures to a Gen10 server while using hardware RAID with flash-backed write cache. It also fits environments that require simultaneous RAID and HBA functionality through Mixed Mode operation. Buyers who need internal drive connectors or internal cabling should consider a different adapter.

Eight external SAS lanes define connectivity

The single specification that decides fitment is the eight external SAS lanes provided by the controller. These lanes determine how many externally attached SAS or SATA drives can be connected and whether the card matches the external enclosure cabling plan. Verify the lane count against your enclosure requirements before purchase.

How it compares

Measured against everything we stock in RAID & Drive Controller Cards, at today’s prices. Recalculated every night.

Price $1,788.99
Pricier than about 92% of the 219 comparable items (median $155.99).

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Specifications

Product
Brand nameHEWLETT PACKARD ENTERPRISE
Product typeConsumer Electronics
Size & build
Shipping weight0.34 kg
Package size244 × 216 × 51 mm

Questions about this item

What host interface slot does the 804405-B21 controller need?

The controller requires a PCI Express 3.0 x8 slot on the server motherboard.

Can the P408e-p SR Gen10 work with existing 6Gb/s SAS drives?

Yes, the 12Gb/s SAS interface is backward compatible with 6Gb/s and 3Gb/s SAS or SATA drives.

How do I verify the 4 GB flash-backed write cache is active?

Check the HPE Smart Storage Administrator utility; it will report the FBWC module status as OK and show the 4 GB cache capacity.

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