When it comes to data storage, two main types of drives dominate the market. Understanding the difference between HDDs vs SSDs helps you make smarter IT investments for your business. Hard disk drives (HDDs) use spinning disks to read and write data and have been the traditional choice for years. Solid-state drives (SSDs), on the other hand, rely on flash memory for faster performance and greater durability. This guide outlines the key differences between the two technologies.
What is an HDD?
An HDD is a spinning hard disk that reads and writes data on a metal platter with a magnetic coating. The internals look similar to an old record player. There is a platter or a stack of platters that spin around a spindle, and an armature called a read-write head. Data is stored onto the platter via tiny magnetic particles.
What is an SSD?
Unlike an HDD, an SSD does not have any internal moving parts. Instead, it uses integrated circuit assemblies to store, retrieve, and cache data. An SSD has two key components: flash memory chips and the controller, which is an embedded microprocessor. Flash memory contains storage memory, while the controller executes firmware-level software.
HDDs vs SSDs: Key differences compared
When weighing HDDs vs SSDs, five key categories reveal the most important differences.
Speed
HDDs take longer to access data because the disk must spin to find it. They typically operate at 5,400 to 7,200 rotations per minute.
In contrast, SSDs can complete the same task 200% faster since they rely on instantly accessible memory chips. A computer with an SSD boots an operating system and loads apps much faster than one using an HDD. An SSD can copy large files at 500 MB per second. An HDD handles the same task at 30–150 MB per second. Therefore, you can store 20 GB of data in under 10 seconds with an SSD, but at least two minutes with an HDD.
Capacity
Thanks to recent advancements, SSDs now support terabytes of storage, just like HDDs. However, budget laptops often ship with a 128 GB SSD or a 500 GB HDD. The gap exists because SSDs carry higher price tags. As a result, if you require a lot of storage space at a low cost, an HDD is often the better choice.
Cost
For the same storage capacity, HDDs are less expensive than SSDs. That is why they are often bundled in budget laptops and PCs. Some gaming laptops solve this speed-price dilemma by combining both an SSD for key applications and an HDD for bulk data storage. However, most consumer and business laptops do not have room for multiple storage drives. Fortunately, 1 TB external USB hard drives are available for under $50.
Durability
HDDs are more susceptible to shock and damage because of their moving parts. Dropping a laptop could damage the HDD and result in data loss. In addition, the longer you use an HDD, the more it wears down and eventually fails.
In contrast, SSDs use a non-mechanical design of flash storage mounted on a circuit board. This makes them more durable and better at keeping your data safe. For businesses managing critical data, our managed IT services team can help you choose and maintain the right storage solution.
Noise
An HDD emits some noise when the drive spins to process data. An SSD, however, has no moving parts and makes no noise at all. For more technical background on storage drive performance, Sandisk’s SSD vs HDD guide provides a detailed breakdown.
HDDs vs SSDs – which is right for your business?
Overall, SSDs are the clear winner over HDDs in terms of speed and durability. While more expensive, an SSD is the faster and more reliable data storage option in the long run.
If your computer can support multiple hard drives, use an SSD as the primary storage for your OS, applications, and most-used programs. Meanwhile, use an HDD to store pictures, documents, and other files that do not require quick access times.
Planning to purchase new hardware? Let our experts guide you so you can confidently make the right IT investments. Get in touch with us today.