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- Description
- Specifications
The 726903-B21 is the HPE Smart Array P841 with 4GB of flash-backed write cache, a full-height PCIe 3.0 x8 card whose job is to connect ProLiant Gen9 rack and tower servers to external SAS storage. It exposes sixteen physical links across four x4 external ports at 12Gb/s for SAS and 6Gb/s for SATA, and it handles up to 200 physical drives and 64 logical drives. Daisy-chaining reaches up to eight disk enclosures in a dual-domain layout.
On the data-protection side it offers RAID 0, 1, 10, 5, 50, 6, 60 and 10 ADM, can run in RAID or HBA mode and supports Legacy and UEFI boot. The write cache is 72-bit wide DDR3-1866 memory with up to 14.9GB/s of cache bandwidth, and the cached data can move with the cache module to a replacement controller. SmartCache is included, while Secure Encryption needs a separate licence. The card also drives SAS tape drives, autoloaders and libraries.
The option kit does not include the HPE Smart Storage Battery, which has to be added when this is the first P-series Smart Array controller in the server. Supported servers include DL20, DL80, DL180, DL360, DL380 and DL560 Gen9, ML110, ML150 and ML350 Gen9, plus Apollo 4200 and 4500. The spare is 750051-001.
More controllers are under HPE interface cards.
Related part: 726911-B21 HPE H241 12Gb 2-Port External Smart Host Bus Adapter
Related: HPE ProLiant DL20 parts
Related part: 726825-B21 HP Smart Array P441/4GB FBWC 12Gb External SAS Controller
Related part: 786087-B21 HP XL2xx Smart Array P440/4G 12W FIO Kit
| Part number | 726903-B21 |
| Host interface | PCIe 3.0 x8, full-height |
| Ports | 4 external x4 (16 physical links) |
| Transfer rate | 12Gb/s SAS, 6Gb/s SATA |
| Write cache | 4GB flash-backed |
| Cache bandwidth | up to 14.9GB/s |
| RAID levels | 0, 1, 10, 5, 50, 6, 60, 10 ADM |
| Maximum drives | 200 physical, 64 logical |
| Modes | RAID or HBA |
| Boot | Legacy and UEFI |
| Included licence | HPE SmartCache |
| Spare part number | 750051-001 |