This item, 631922-B21, is the HPE option part number for the product described as 512MB B-series 36in Dynamic Smart Array Flash Backed Write Cache for ML/DL. Further details below.
Improve your server's write performance with this 512MB B-series Dynamic Smart Array Flash Backed Write Cache. This cache module enhances data protection and accelerates write-intensive applications in your server environment. The flash-backed design ensures data is preserved even in the event of a power failure.
Designed for seamless integration into HPE ProLiant servers, this write cache module is a crucial component for optimizing storage performance. Compatible models includes but may not limited to the HPE ProLiant DL360e Gen8, DL380e Gen8, DL160 Gen8, and ML350e Gen8 servers.
HPE Option Part #: 631922-B21
PRODUCT SPECIFICATIONS FOR 631922-B21:
- Product Type: Flash Backed Write Cache
- Memory Size: 512 MB
- Application / Usage: Server
- Weight: 1.5 pounds
- Product Dimensions: 6.2 x 4.2 x 2.2 inches
- Compatibility: HP ProLiant Gen8 Servers: DL160, DL360e, DL380e, ML350e, SL230, SL250s, SL230s
- Data Backup Type: Flash
COMPATIBLE WITH:
PROLIANT DL SERIES
PROLIANT ML SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
HPE PARTSURFER INFO FOR 631922-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 |
| 633541-001 | 512MB Flash Backed Write Cache (FBWC) module - 184-pin, DDR3 Mini-DIMM - For use with B-Series Smart Array |
Last updated: 5/2/2025
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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.
