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SSD vs HDD Learn which device is more effective
0.1 ms
5-8 s
6000 io/s
400 IO/s
<20 ms
400-500 ms
2-5 W
6-15 W
≈6 hrs
≈24 hrs

SSDs vs HDDs

In recent years, it has become evident that SSDs surpass HDDs in terms of performance and reliability. SSDs have already become the norm, with most modern laptops now incorporating them as a default feature. Additionally, SSD drives have made their way into the web hosting industry, offering significant advantages over HDD-equipped servers. Let's explore the differences between SSD and HDD servers and the benefits of opting for an SSD-powered hosting solution:

1. Access Times

Access Times - SSD

SSDs are designed to work in a completely different way compared to regular HDDs – there are no rotating disks, no moving elements. As a result, data access times are incredibly low, sometimes as low as 0.1 millisecond.

Access Times - HDD

HDDs rely on rotating disks and laser beams, which may sound very sci-fi, but is a reality. The necessity of having the disks spinning all the time translates into slower data access times. With today’s fastest HDDs, the top data access speed ranges between 5 and 8 milliseconds.

2. CPU I/O wait

Cpu Power - SSD

Faster data access speeds lead to shorter waiting times for data requests to be processed. This leaves more CPU time for other tasks and frees the main CPU unit from the necessity to reserve more resources so as to handle the queued requests. CPUs on SSD-powered machines perform at optimal levels.

Cpu Power - HDD

As stated, HDDs are much slower than SSDs when it comes to accessing data. This means that the request queues will be longer and slower to complete and that more CPU resources will be dedicated to handling the queued requests. As a result, CPUs on HDD-powered machines often underperform.

3. Random I/O Performance

Random I/O Performance - SSD

Due to the completely re-thought data storage and access approach that SSDs are based on, their random I/O performance is amazing. Our tests have revealed that SSDs can handle a minimum of 6000 IO’s per second.

Random I/O Performance - HDD

HDDs tell a different story. They still rely on data storage techniques that date back to the 1950s. During the same tests, our fastest HDDs managed to handle 400 IO operations per second on average.

4. Input/Output Request Times

Input/Output Request Times - SSD

We put one of our SSD-powered servers to a real-world stress test – we ran a full system backup. During the whole process, the average service time for an I/O request was under 20 ms.

Input/Output Request Times - HDD

When the same stress test was performed on a server with HDD drives, the results were expected. The average service time for an I/O request varied between 400 and 500 ms.

5. Reliability

Reliability - SSD

As noted before, SSDs don’t have moving parts. Thanks to the recent advances in data storage, they are much more reliable compared to regular HDD drives. Their rate of failure is about 0.5%.

Reliability - HDD

We all have friends who’ve lost their data as a result of an HDD crash. Imagine several disks rotating in the air at 7200 rpm, less than a millimeter away from one another – there is a very good chance that something can go wrong. According to tests, the rate of failure of HDD drives ranges between 2% and 5%.

6. Energy Consumption

Energy Consumption - SSD

If you have a single computer, there’s no need to worry so much about the power it requires. If you manage a whole server farm, however, the electricity bills will be significantly bigger. This is where SSDs can make a difference – they require between 2 and 5 watts to function, even under serious stress.

Energy Consumption - HDD

The electrical bill will be quite different if all your servers are equipped with HDDs. Aside from the noise they make and the heat they generate, they also consume quite a lot of power for such small devices. The typical consumption ranges from 6 to 15 watts when under stress.

7. Real-World Performance

Real-World Performance - SSD

Putting the numbers aside, are SSDs that much faster? When we ran the full server backup test, we measured how long it took for the server to generate a full backup. An SSD-powered server requires an average of 6 hours to finish the job.

Real-World Performance - HDD

When the same test was carried out with an HDD-powered machine, the difference in time was more than noticeable. From start to finish, backing up an HDD-powered server takes between 20 and 24 hours on average.

SSD-based web hosting services

As it is evident, SSDs outshine HDDs in terms of capability and efficiency. Servers with SSDs deliver better performance and experience lower failure rates, resulting in noticeably faster-running websites and apps. With ResellersPanel, you can seize the chance to offer SSD-based cloud hosting packages and SSD-powered OpenVZ VPS servers, and be a part of the growing SSD trend. Moreover, if you desire one for yourself, you can get it at a preferential, wholesale price! Check out our SSD-based hosting offers:

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