HPE P40503-K21 960GB Solid State Drive
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HPE P40503-K21 960GB SFF TLC Single Port DS SATA 6GBPS BC New

Availability: In Stock
Part Number#: P40503-K21
List Price was: $2594.87
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Short Description:
P40503-K21 960GB Gigabyte(GB) Serial Advanced Technology Attachment (SATA) Triple Level Cell (TLC) Digitally Signed Firmware (DS) Small Form Factor (SFF) Gigabytes Per Second (6GBPS) Single Port Basic Carrier (BC) Solid State Drive for Server | Made by HPE | Brand New 3 Years Warranty
Brand Warranty:
3 Years Warranty
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days
Wear-Leveling and Over-Provisioning

Wear-Leveling and Over-Provisioning are two important concepts in solid-state drives (SSDs), including the HPE P40503-K21 960GB SFF TLC Single Port DS SATA 6GBPS BC SSD.

Wear-Leveling is a technique used to distribute the write operations evenly across all the blocks of an SSD, so that no single block experiences a disproportionate number of write cycles and fails earlier than the others. Wear-Leveling algorithms monitor the number of write cycles to each block and dynamically redistribute data to ensure that all blocks are used evenly.

Over-Provisioning, on the other hand, refers to the reserve space in an SSD that is not visible to the host and is used to improve performance and extend the life of the drive. The amount of over-provisioning can vary, but it is typically 7-15% of the total capacity of the SSD. Over-provisioning provides additional free blocks for the drive to use for wear-leveling, and also allows the drive to perform internal operations more efficiently.

Operating System and Driver Support

Troubleshooting and maintenance of the HPE P40503-K21 960GB SFF TLC Single Port DS SATA 6GBPS BC SSD is an important part of ensuring its reliable operation and longevity. Here are some steps you can follow to troubleshoot and maintain the drive:


  • Check the connection: Ensure that the drive is securely connected to the motherboard and that the cables are properly seated.
  • Update firmware: Make sure the firmware of the drive is up-to-date and compatible with the operating system and the motherboard.
  • Check for errors: Run a disk utility or diagnostic tool to check for any errors or bad sectors on the drive.
  • Test for compatibility: Try swapping the drive with a known-good drive to determine if the issue is with the drive or with another component.


  • Monitor SMART data: Use a tool that can monitor the Self-Monitoring, Analysis and Reporting Technology (SMART) data for the drive, which provides information about the health of the drive.
  • Regular defragmentation: Defragment the drive regularly to help reduce the number of write cycles and prolong its lifespan.
  • Avoid sudden power failures: Ensure that the system is properly shut down to avoid sudden power failures that can cause data corruption and shorten the lifespan of the drive.
  • Use TRIM: If the drive is used with an operating system that supports the TRIM command, make sure TRIM is enabled to help the drive maintain its performance over time.

It's also a good idea to back up your data regularly to protect against data loss in case of any issues with the drive.

Troubleshooting and Maintenance

The HPE P40503-K21 960GB SFF TLC Single Port DS SATA 6GBPS BC SSD is a solid-state drive (SSD) that is designed for use in enterprise servers and storage systems. It has broad support for various operating systems and drivers, ensuring compatibility with a range of computing environments.

Operating Systems: The HPE P40503-K21 SSD is compatible with a variety of operating systems, including Microsoft Windows Server (2008 R2 and later), Red Hat Enterprise Linux (RHEL), SUSE Linux Enterprise Server (SLES), VMware vSphere ESXi, and Citrix XenServer.

Drivers: The HPE P40503-K21 SSD is supported by the HPE Smart Storage Administrator (HPE SSA) and HPE Dynamic Smart Array (DSA) drivers, providing reliable and efficient data management.

General Information about this HPE P40503-K21
  • Manufacturer: HPE
  • Part Number or SKU# P40503-K21
  • Device Type: Solid State Drive Hot-Swap
  • Sub-Type: SATA 6GBPS
Technical Information for 960GB SSD
  • Capacity: 960GB Storage Drive
  • Form Factor: 2.5 Inch SFF
  • Interface: SATA 6GBPS
  • NAND Flash Memory Type: Triple-level cell (TLC)
  • Plug Type: Hot Pluggable
  • Connectivity Type: Single Port
  • Workload Type: Mixed Use
  • Features: Digitally Signed Firmware (DS)
  • Bundled with: HPE Basic Carrier (BC)
  • Platform Supported: Mainstream Compute Platforms
  • Height: 7.00 mm
Power Consumption of SATA 6GBPS Solid State Drive
  • Idle Time: 1.37 Watt
  • Random Read: 2.81 Watt
  • Sequential Read: 3.09 Watt
  • Sequential Write: 3.93 Watt
  • Random Read/Write: 2.81 Watt
  • MAX: 3.93 Watt
Product Dimensions & Weight of 2.5 Inch SSD
  • Height: 0.63 Inch
  • Width: 3.10 Inch
  • Depth: 5.45 Inch
  • Weight: 1.50 lbs


  • Lifetime Writes (TB): 6000
  • Endurance DWPD (Drive Writes Per Day): 3.40
  • Drive Transfer Rate: 6 6GBPS (external)
  • MAX Seq. Reads Throughput (MiB/s): 520
  • Random Read Average Latency uSec (4KiB,Q1): 125
  • Random Read IOPS (4KiB, Q=16): 61000
  • MAX Random Read IOPS (4KiB): 72000@Q32

Compatibility Information

  • HPE ProLiant DL Series: DL20 Gen10 Plus (2.5inch), DL20 Gen10 Plus Base (2.5inch), DL20 Gen10 Plus Entry (2.5inch), DL20 Gen10 Plus High Performance (2.5inch), DL20 Gen10 Plus Performance (2.5inch), DL325 Gen10 Plus V2 (2.5inch), DL325 Gen10 Plus V2 Base (2.5inch), DL325 Gen10 Plus V2 for Weka Base Tracking (2.5inch), DL345 Gen10 Plus (2.5inch), DL345 Gen10 Plus Base (2.5inch), DL345 Gen10 Plus Entry (2.5inch), DL360 Gen10 Plus (2.5inch), DL360 Gen10 Plus All-NVMe Server for Software Defined Storage (2.5inch),
  • HPE ProLiant ML Series: ML30 Gen10 Plus (2.5inch), ML30 Gen10 Plus Entry (2.5inch), ML30 Gen10 Plus Performance (2.5inch)
  • HPE SimpliVity 325 Gen10 Plus V2 Node (2.5inch)

Contact us or ask for live chat/help if you have any questions about the compatibility of this item to ensure the model's matching features with your current system.

Brand Warranty:
3 Years Warranty
Product Condition:
New Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.


Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
Estimated delivery time: Overnight 8:00 AM, Early morning, overnight delivery for your time-critical shipments.

UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
  • We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
  • If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
  • You can estimate the shipping cost from the products detail page, also available on the checkout page
  • The shipping cost depends on box dimensions, weight, and zip/postal code
  • To get a FedEx® delivery service you need to mention it on the checkout page notebox.
  • For urgent shipments, please contact our customer service.
  • Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.