This item, P40557-B21, is the HPE option part number for the product described as 1.92TB SAS 12G Read Intensive SFF BC PM1643a SSD. Further details below.
The HPE 1.92TB SAS 12G Read Intensive SFF BC PM1643a SSD (P40557-B21) delivers fast, dependable flash storage for read-heavy workloads such as virtualization, databases, analytics and content delivery. Built with TLC NAND and a dual-port 12G SAS interface, it provides high throughput plus the path redundancy enterprise arrays rely on, while hot-plug support lets you add or replace capacity without taking the server offline.
Shipped in an HPE Basic Carrier (BC) small form factor design, P40557-B21 drops into a wide range of HPE ProLiant platforms - from DL360/DL380 Gen10 Plus and Gen11 through the latest Gen12 servers. Digitally signed firmware helps protect against unauthorized firmware changes, and the drive is backed by a 3-year warranty. Genuine HPE parts, in stock and ready to ship.
HPE Option Part #: P40557-B21
HPE Spare Part #: P41555-001
PRODUCT SPECIFICATIONS FOR P40557-B21:
- SKU #: P40557-B21
- Description: HPE 1.92 TB, 12G, SAS, Read Intensive, digitally signed FW, solid state, small form factor Value SAS drive in a Basic Carrier with 3-year warranty
- Capacity (GB): 1,920
- Workload: RI (Read Intensive)
- Interface Type: SAS 12G
- Form Factor: SFF
- Plug Type: Hot Plug
- Carrier Type: BC (Basic Carrier)
- Digitally Signed Firmware (DS): Yes
- Flash Type: TLC
- Port: Dual
- Warranty: 3-year warranty
COMPATIBLE WITH:
PROLIANT ML SERIES
PROLIANT DL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS FOR P40557-B21:
- Which HPE servers is P40557-B21 compatible with?
P40557-B21 is supported in HPE ProLiant Gen10 Plus, Gen11 and Gen12 platforms, including ML30/DL20 Gen10 Plus, DL325 Gen10 Plus v2, DL345/DL360/DL365/DL380 Gen10 Plus, DL385 Gen10 Plus v2, ML30/ML110/ML350/DL20/DL320/DL325/DL345/DL360/DL365/DL380/DL385/DL560 Gen11, and ML350, DL320, DL325, DL340, DL345, DL360, DL380, DL380a and DL580 Gen12 servers. - Is P40557-B21 suitable for write-heavy applications?
P40557-B21 is a Read Intensive (RI) TLC SSD, so it is optimized for read-heavy workloads like virtualization, databases, analytics and content serving. For sustained write-heavy environments, a mixed use or write intensive drive is a better fit. - Does P40557-B21 include a carrier and support hot-plug installation?
Yes. P40557-B21 ships as a small form factor (SFF) drive in an HPE Basic Carrier (BC) and is hot-plug capable, so it can be installed or replaced without powering down a supported server. It also features dual-port SAS and digitally signed firmware, and carries a 3-year warranty.
Last Updated: 2026-10-04
- 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 government 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 4 PM ET the same day and offers NEXT DAY delivery to US customers.
- Form Factor/Carrier Type
- SFF / Basic Carrier (BC)
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.
