This item, 631671-B21, is the HPE option part number for the product described as Smart Array P420/2GB FBWC 6Gb 2-ports Int SAS Controller. Further details below.
This high-performance HPE Smart Array P420 controller is designed to maximize server performance and data availability. Featuring a 2GB Flash Backed Write Cache (FBWC), this internal SAS controller accelerates application performance by intelligently caching frequently accessed data, improving write speeds and overall system responsiveness. It supports 6Gb/s SAS technology.
This PCIe controller enhances data protection and reduces downtime. Compatible servers include but are not limited to the HPE ProLiant DL380p Gen8, DL360e Gen8, DL380e Gen8, DL385p Gen8, DL560 Gen8, DL160 Gen8, DL320e Gen8, ML350p Gen8, ML350e Gen8, ML310e Gen8, ML310e Gen8 v2, and SL270s Gen8. With its DDR3 SDRAM and fast Memory Speed, this item provides efficient and reliable data handling for demanding workloads.
HPE Option Part #: 631671-B21
PRODUCT SPECIFICATIONS FOR 631671-B21:
- Device Type: Flash Backed Cache
- Generation supported: Smart Array 6Gb/s SAS
- Form factor: PCIe
- Port attribute: Internal
- Dimensions (W x D x H): 19.05 x 24.13 x 5.72 cm (7.5 x 9.5 x 2.25 in)
- Weight: 0.37 kg (0.81 lb)
- RAM: 2048 MB
- Memory Speed: 1333 MHz
- Computer Memory Type: DDR3 SDRAM
RESOURCES FOR 631671-B21
Quickspecs for 631671-B21COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
PROLIANT SL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
HPE PARTSURFER INFO FOR 631671-B21
| Spare PN | Description | |
|---|---|---|
 | 660093-001 | Capacitor pack with 914mm (36 in) cable. For use with 512MB/1GB/2GB cache module - Provides back up power to the flash-based write cache (FBWC) memory module for up to 80 seconds in the event of a system power failure. For use with Smart Array controllers |
| 671353-001 | Miscellaneous cable kit - Includes the front video adapter cable, embedded SATA cable, Capacitor Pack with 36-inch cable (provides back up power to the FBWC memory module), and mini-SAS cable with straight connector to left connector (33-inches long) |
| 633538-001 | Smart Array P420 controller board - PCIe x8 low profile SAS controller - Has two internal x8 wide mini-SAS ports - For up to 6Gb/sec transfer rate for SAS and SATA - Does not include memory or backup power |
| 633543-001 | 2GB flash backed write cache (FBWC) memory module, 72-bit wide - Part does not include the controller board or capacitor module - For use with the P420, P421, P430, P431, 822, and 830 Smart Array controllers |
Last updated: 5/2/2025
- Trusted by thousands. Over 36,000 customers in 100+ countries trust Global One Technology to deliver mission-critical HP Enterprise hardware - including Fortune 500 businesses, schools, hospitals, and federal, state, and local goverment agencies.
- HPE is our specialty! We only sell genuine HP Enterprise parts.
- EASY ordering process. Purchase online now with credit card or PayPal!
- FAST shipping. Global One Technology ships orders received by 5pm the same day and offers NEXT DAY delivery to US customers.
This product is warrantied against hardware failure for a period of 1 Year from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
To initiate a return or warranty claim, please complete and submit the RMA Request Form.
