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Green rectangular circuit board with silver connectors and black components

HP

HP 726740-B21 Smart Array P440Ar 2 GB backup media

SKU CH-DDA3-VS4V7 MPN 726740-B21

2 GB FBWC plug-in card provides RAID 0, 1, 5, 6, 10, 50, 60 support with 26 channels over Sata and Sas interfaces

  • Media TypePlug-in Card
  • Capacity2 GB
  • 2 GB flash-backed write cache protects data during power loss
  • 26 channels support up to 26 Sata or Sas drives
  • PCIe 3.0 x8 interface delivers 1.2 Gbps throughput
  • RAID 0, 1, 5, 6, 10, 50, 60 plus advanced data mirroring options
  • Designed for HP ProLiant Gen9 rack and tower servers

Smart Array P440Ar 2 GB backup media

The HP 726740-B21 is a plug-in storage controller card with 2 GB flash-backed write cache designed for HP ProLiant Gen9 rack and tower servers. It connects via PCIe 3.0 x8 and manages up to 26 internal drive channels over Sata 6 Gb/s and Sas 12 Gb/s links.

Thermals noise and power draw in normal use

The controller operates inside the server chassis using system airflow and standard PCIe slot power without auxiliary connectors. Its flash-backed cache eliminates battery maintenance while preserving write data during unexpected power loss.

RAID levels and channel count

Supported RAID modes include 0, 1, 5, 6, 10, 50, 60 plus Advanced Data Mirroring 1 and 10. Eight internal physical links provide connectivity for up to 26 drives through an expander, delivering 1.2 Gbps throughput per port.

Highlights

  • 2 GB flash-backed write cache protects data during power loss
  • 26 channels support up to 26 Sata or Sas drives
  • PCIe 3.0 x8 interface delivers 1.2 Gbps throughput
  • RAID 0, 1, 5, 6, 10, 50, 60 plus advanced data mirroring options
  • Designed for HP ProLiant Gen9 rack and tower servers

Specifications

BrandHP
Media TypePlug-in Card
Capacity2 GB
Shipping weight0.45 kg
Package size254 × 216 × 76 mm

Questions about this item

How is the 726740-B21 installed in a Gen9 server and what step is often missed?

Insert the card into a PCIe 3.0 x8 slot, connect the eight internal SAS links to the backplane, then enable the 2 GB flash-backed write cache in the controller BIOS so the FBWC module is recognised.

What maintenance will the 2 GB flash-backed write cache on the P440Ar need later?

The FBWC module uses a super-capacitor instead of a battery; no scheduled replacement is required, but the cache should be monitored via the Smart Storage Administrator for any health alerts.

What limit appears first on the P440Ar during sustained write workloads?

The 1.2 Gbps flash-backed write cache bandwidth becomes the bottleneck before the 12 Gb/s SAS or 6 Gb/s SATA links saturate.

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