Western Digital
WD Ultrastar DC HC550 18 TB 3.5" Internal 512MB SATA 7200rpm 512E SE NP3 0F38459 WUH721818ALE6L4 (Pack of 4)

WD Ultrastar DC HC550 18 TB 3.5" Internal 512MB SATA 7200rpm 512E SE NP3 0F38459 WUH721818ALE6L4 (Pack of 4)
WD Ultrastar DC HC550 18 TB 3.5" Internal 512MB SATA 7200rpm 512E SE NP3 0F38459
Driving Up Capacity and Driving Down TCO for Cloud and Hyperscale Data Centers
The breadth and depth of Big Data is driving the universal need for higher capacities across a broad spectrum of applications and workloads. Laying the foundation for a worry-free data center, Western Digital delivers the capacity to conquer the data explosion with the Ultrastar DC HC500 series of hard disk drives (HDDs). The DC HC500 series is designed for public and private cloud environments where storage density and cost-efficient infrastructure is critical.
The 18TB/16TB Ultrastar DC HC550 HDDs are the first commercial implementation of Energy-Assisted Magnetic Recording technology and utilize the industry’s first Triple Stage Actuator. These technologies, integrated with HelioSeal on a 9-disk platform, deliver the highest areal density and unmatched Total Cost of Ownership for customer and market needs.
Product Details
- Up to 18TB capacity in a standard 3.5-inch form factor
- Industry’s first Energy-Assisted Magnetic Recording technology
- Industry’s first Triple Stage Actuator
- Leading HelioSeal technology
- Reliable, field-proven design across five generations
- HelioSeal design delivers power efficiency (Watts/TB)
- 2.5M hours MTBF rating and a 5-year limited warranty
Applications and Workloads
- Cloud & Hyperscale Storage
- Massive Scale-Out (MSO), high-density data centers
- Distributed File Systems
- Bulk storage using Object storage solutions like Ceph™ and OpenStack Swift
- Primary and secondary storage for Apache Hadoop® for Big Data Analytics
- Surveillance Analytics
Continuous Innovation for Highest Capacities and Lower TCO
The Ultrastar DC HC550 18TB CMR HDD and Ultrastar DC HC650 20TB SMR HDD are delivering industry leading capacity for the data center through a combination of new and proven technologies.
Western Digital is the first to deliver Energy-Assisted Magnetic Recording (EAMR) technology and a Triple Stage Actuator (TSA). These new technologies combined with further mechanical innovations and HelioSeal technology provide the industry’s highest capacities to enable data at scale with optimized TCO for data center architectures, while maintaining workload reliability and performance.
Handling time: All orders are shipped as soon as possible within 2 business day after payment confirmed. However, we cannot control transit time once your package is handed over to the courier. We process and ship orders Monday – Friday and are unable to offer weekend or holiday delivery.
Shipment Methods All shipping requires additional 1-2 days of processing timeFree budget shipping (8-14 business days)
USPS Priority (3-7 business days)
Free 2-Day Shipping on Select Items – Includes Hard Drives, HPE Networking, and Yealink! (Choose free shipping at checkout)
Returns PolicyAll products sold by aaawave.com are brand new and carry the manufacturer’s full warranty. All products advertised as BULK or OEM are brand new and carry the manufacturer’s full warranty.
*Note: "BULK" and "OEM" items do not come in a retail type of packaging, do not include hardware, accessories, cables,software, or literature. Unless otherwise noted.
All products are shipped to the customer the exact same way that we receive them from the manufacturer. We are NOT responsible for physical damage or misuse of the product, damage or misuse of the product will automatically void the manufacturer warranty.
* Note: AAAwave.com does not accept returns for refunds or exchanges of the following items: Product listings that state "Limited Supply, All sales are final". Opened software and software product keycards. The sales of all the items aforementioned are considered final.
Schedule and Time
AAAwave offers a 30 day return/exchange policy, unless otherwise noted. The return/exchange policy begins on the
customers purchase date. No returns or exchanges will be accepted after 30 days. All refunds will be made back to
the customer’s original form of payment within 7 business days of receiving the return merchandise. Return
Merchandise Authorization number (RMA) are valid for only 10 business days. Packages must be received by us within
10 business days after the RMA number has been issued. Packages received after 10 business days will not be accepted
and the warranty period will be considered voided and cancelled. RMA processing time is 5-7 business days once the
package has been received.
Extra Charge
AAAwave reserves the right to refuse the return or to charge a minimum 10% restocking fee.
There is no restocking fee if the product is returned factory sealed and unopened (including an intact UPC code) and must include all packing material, blank warranty cards, manuals, and accessories. AAAwave can only refund the original purchase price.
We offer RMA replacement without any restocking fee to customers who have received a defective product.
Shipping costs is non-refundable.
Product exchanges can be accepted for defective items, the same exact item only.
Customer’s Duty
aaawave.com does NOT offer "Advanced Replacement" for the exchange of defective merchandise.
aaawave.com does NOT pay the return shipping costs for defective merchandise.
We are NOT responsible for product defects, because we do not manufacture the products we sell. aaawave.com will pay
for shipping "Back to the customer" for exchange of defective items.
All returns and exchanges must be accompanied with a Return Merchandise Authorization number (RMA number). Please
contact us for a RMA number prior to sending your package. aaawave.com will NOT accept packages without prior
authorization and a RMA number.
All packages being shipped to aaawave.com must have a valid tracking number that is with a major courier such as
UPS, FEDEX, or USPS.
What shipping options are available?
We offer standard and expedited shipping options within the U.S. Shipping rates and estimated delivery times are displayed at checkout. Shipments to Alaska, Hawaii, and other U.S. territories (i.e. Guam, Puerto Rico, Virgin Islands etc.) require expedited shipping and incur shipping charges. Items may be delivered separately in multiple shipments.
Do you ship internationally?
Currently, we only ship within the U.S. For international inquiries, please contact our support team.
30 Day Return Policy.
AAAwave.com offers a 30 day return/exchange policy, unless otherwise noted. The return/exchange policy begins on the customers purchase date. All refunds will be made back to the customer’s original form of payment within 7 business days of receiving the return merchandise.
Are you an authorized reseller for the products you sell?
Yes, we are an authorized reseller for many brands, including ASUSTOR, Avermedia, Dynatron, HPE networking, Gigabyte, Streacom and Arduino.
How can I track my order?
Once your order ships, you will receive a tracking number via email. You can also track your order by logging into your AAAwave.com account and ask our chatbot.
Do your products come with a warranty?
Yes, most of our products are covered by the manufacturer’s warranty. Warranty details can be found on the product page or by contacting our support team.
What are your business hours?
Monday – Friday (Excluding Holidays) 8:00am – 6:00pm PST