Appliances Memorial Day SaleFree delivery. Ends 6/3. Terms apply.Shop now

$(csi.user.businessName)

Skip to content Go to Product Search

Deal of the Day

My Best Buy Memberships

Best Buy Business

Main Content

ST121WHDS2 search results

Filters

Skip To Results

Get it fast

Pickup · Ready todaySelect Store

Shipping · Get it today55423

Category

Hard Drives, SSD & Storage

Internal Hard Drives

Network Attached Storage (NAS)

Price

to

$150 - $199.99

$200 - $249.99

$250 - $499.99

$500 - $749.99

$750 - $999.99

$1000 - $1249.99

$1250 - $1499.99

$1500 - $1999.99

Brand

Buffalo Technology

Synology

Asustor

Seagate

WD

Current Deals

On Sale

Color

Black

Blue

Multi

Silver

Discount

All Discounted Items

20% Off or More

Form Factor

3.5 in.

2.5 in.

Rotation Speed

5400 revolutions per minute

7200 revolutions per minute

Customer Rating

Top-Rated

5

4 & Up

Internal Or External

Internal

External

Storage Capacity

12TB or More

8TB - 11TB

4TB - 7TB

Less than 120GB

Maximum Read Speed

Less than 500 mb/s

Maximum Write Speed

Less than 500 mb/s

Sponsored

ST121WHDS2 (45)

Sort by:

Best Match

Seagate - IronWolf 8TB NAS Internal Hard Drive with Rescue Data Recovery Services
Rating 4.8 out of 5 stars with 194 reviews
$299.99
Pickup unavailable
Get it by Tue, Jun 2 • FREE
Compare
Compare
WD - Red Plus 8TB NAS Internal Hard Drive
Rating 4.8 out of 5 stars with 75 reviews
$259.99
Pick up Wed, Jun 3
Get it by Tue, Jun 2 • FREE
Compare
Compare
Seagate - SkyHawk AI 12TB Internal Hard Drive
Rating 5 out of 5 stars with 2 reviews
$459.99
Get it by Fri, Jun 5 • FREE
Compare
Compare
Seagate - Enterprise Capacity 3.5 HDD V.5 2TB Internal SATA Hard Drive for Desktops
Rating 5 out of 5 stars with 2 reviews
$175.96
Get it by Fri, Jun 5 • FREE
Compare
Compare

Sponsored

Sponsored

1-18 of 45 items

12 3

Sponsored

Sponsored

Similar products from outside of Best Buy

sponsored

Sponsored

Visit our Support Center
Check your Order Status
Shipping, Delivery & Store Pickup
Returns & Exchanges
Price Match Guarantee

Order & Purchases

Check Order Status
Shipping, Delivery & Pickup
Returns & Exchanges
Price Match Guarantee
Product Recalls
Trade-In Program
Gift Cards

Payment Options

My Best Buy® Credit Card
Pay Your Bill at Citibank
Lease to Own
Buy Now, Pay Later
Best Buy Business Financing

Support & Services

Visit our Support Center
Shop with an Expert
Schedule a Service
Manage an Appointment
Protection & Support Plans
Haul Away & Recycling
Contact Us

Rewards & Membership

My Best Buy Memberships
View Points & Certificates
Member Offers

Partnerships

Sell on Best Buy Marketplace
Advertise with Us
Affiliates: Creators & Publishers
Best Buy Health
Best Buy Education
Best Buy Business
Partner+

About Best Buy

Corporate Information
Careers
Corporate Responsibility
Sustainability

Sign in or Create Account

Get the latest deals and more.

Email Address

Best Buy appLearn more ›

Best Buy Canada

Accessibility Terms & Conditions Privacy Interest-Based Ads State Privacy Rights Health Data Privacy Do Not Sell/Share My Personal Information Limit Use of My Sensitive Personal Information Targeted Advertising Opt Out CA Supply Chain Transparency Act

In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.

More Buying Options from $459.99

More Buying Options from $259.99

More Buying Options from $175.96