Understanding Storage Drives: HDD vs. SSD
📄 KB-ENDPOINT-001 🗂 Hardware / Endpoint 👤 End Users 📅 Last Reviewed: March 2026
Overview
This article explains the difference between a Hard Disk Drive (HDD) and a Solid State Drive (SSD) — the two most common types of internal storage found in computers. Understanding the difference can help you recognize performance limitations and know when to contact the Helpdesk for an upgrade assessment.
Applies To
Windows Desktops & Laptops Slow Startup / Application Load Hardware Refresh Assessments All End Users
What Is a Storage Drive?
Your computer's storage drive is where everything is permanently saved — your files, photos, installed programs, and the Windows operating system itself. Even when your computer is powered off, this drive retains all of your data.
Hard Disk Drive (HDD)
An HDD is an older storage technology that uses spinning magnetic disks and a mechanical read/write arm to store and retrieve data. Because it relies on physical movement to locate files, it operates more slowly than modern alternatives.
Contains moving mechanical parts inside the drive
Produces faint clicking or humming sounds during operation
Slower to start up Windows and open applications
More susceptible to damage from physical impact or drops
Generally offers more storage capacity at a lower cost per GB
Solid State Drive (SSD)
An SSD is a modern storage technology that uses electronic memory chips with no moving parts. Data is retrieved almost instantly — similar to how a USB drive works, but significantly faster and built directly into your computer.
No moving parts — completely silent during operation
Boots Windows and launches applications significantly faster
More resistant to physical shock and accidental drops
Runs cooler and consumes less power, improving laptop battery life
Typically costs more per GB of storage than an HDD
Comparison at a Glance
Feature | HDD | SSD |
|---|---|---|
Speed | Slower (~80–160 MB/s) | Much faster (up to 7,000 MB/s) |
Moving Parts | Yes — spinning platters | No |
Noise | Faint clicking / humming | Silent |
Durability | Less durable if dropped | Highly durable |
Power Usage | Higher | Lower |
Cost per GB | Lower | Higher |
Typical Use | Bulk storage / archiving | Primary system drive |
How to Tell If Your Device May Have an HDD
Your device likely has an HDD if you are experiencing any of the following:
⚠Windows takes more than 1–2 minutes to fully start up
⚠Programs are slow to open after clicking their icon
⚠Your computer produces a faint clicking or spinning noise from inside
⚠Performance noticeably slows down when multiple programs are open
💡
Did You Know? Upgrading from an HDD to an SSD is typically the single biggest performance improvement you can make to an aging machine — often making it feel like a brand-new computer.
What to Do
If you suspect your device has an HDD that is impacting your productivity, contact the IT Helpdesk to request a hardware assessment. The Helpdesk team can confirm your current drive type and advise on eligibility for an SSD upgrade or device refresh under your department's hardware lifecycle policy.
To submit a request: Log a ticket via the IT Service Portal and select:
Hardware & Peripherals > Performance Issue > Storage / Drive
Related Articles
KB-ENDPOINT-002 — How to Check Your Computer's Storage Type in Windows
KB-ENDPOINT-015 — Requesting a Hardware Refresh or Upgrade
KB-ENDPOINT-031 — Understanding Computer Performance and RAM
This article is maintained by IT Endpoint Services. For corrections or feedback, contact the Helpdesk.