SSDs vs HDDs
Find out which storage device is more suitable for your website hosting account
For many years there was just one single reputable path to store info on a computer – utilizing a hard disk drive (HDD). Nonetheless, this sort of technology is actually showing it’s age – hard drives are really loud and sluggish; they’re power–ravenous and tend to produce quite a lot of heat during serious operations.
SSD drives, alternatively, are swift, consume a smaller amount power and are much cooler. They provide a completely new strategy to file access and data storage and are years ahead of HDDs when it comes to file read/write speed, I/O performance as well as power efficacy. Observe how HDDs fare up against the modern SSD drives.
1. Access Time
With the release of SSD drives, data access rates are now tremendous. Thanks to the completely new electronic interfaces used in SSD drives, the common data file access time has been reduced towards a record low of 0.1millisecond.
The technology driving HDD drives times all the way to 1954. And even though it has been considerably refined over time, it’s nevertheless can’t stand up to the ingenious ideas powering SSD drives. Through today’s HDD drives, the highest data file access speed you are able to achieve differs in between 5 and 8 milliseconds.
2. Random I/O Performance
The random I/O performance is vital for the operation of any file storage device. We have carried out thorough trials and have established an SSD can handle a minimum of 6000 IO’s per second.
Over the exact same lab tests, the HDD drives confirmed to be much slower, with simply 400 IO operations maintained per second. Although this feels like a significant number, for people with an overloaded server that hosts lots of well–liked sites, a slow hard disk drive can lead to slow–loading sites.
3. Reliability
SSD drives are meant to include as fewer moving parts as possible. They use a comparable technology to the one utilized in flash drives and are also much more reliable rather than traditional HDD drives.
SSDs come with an common failing rate of 0.5%.
As we have previously noted, HDD drives rely upon rotating disks. And something that employs a great number of moving components for prolonged intervals is more likely to failure.
HDD drives’ regular rate of failure ranges among 2% and 5%.
4. Energy Conservation
SSDs don’t have any moving parts and require little or no cooling energy. In addition, they need very little energy to function – trials have demonstrated they can be operated by a common AA battery.
As a whole, SSDs take in amongst 2 and 5 watts.
HDD drives are famous for being loud. They need extra electric power for cooling applications. On a server containing a range of HDDs running continuously, you need a great number of fans to make sure they’re kept cool – this may cause them much less energy–economical than SSD drives.
HDDs consume somewhere between 6 and 15 watts.
5. CPU Power
SSD drives provide for speedier data accessibility speeds, which, consequently, encourage the CPU to perform data file calls considerably quicker and then to go back to different responsibilities.
The common I/O wait for SSD drives is actually 1%.
By using an HDD, you will have to devote extra time looking forward to the outcome of your data file request. It means that the CPU will continue to be idle for extra time, waiting for the HDD to react.
The average I/O wait for HDD drives is about 7%.
6.Input/Output Request Times
In real life, SSDs conduct as wonderfully as they performed during our trials. We ran a complete system back–up on one of our own production web servers. Throughout the backup process, the common service time for any I/O demands was basically below 20 ms.
In contrast to SSD drives, HDDs provide considerably sluggish service times for I/O calls. During a web server backup, the normal service time for any I/O call ranges between 400 and 500 ms.
7. Backup Rates
Speaking about backups and SSDs – we’ve observed an effective progress with the back–up speed as we moved to SSDs. Now, a regular hosting server back up will take only 6 hours.
On the flip side, on a server with HDD drives, a similar back–up usually requires 3 to 4 times as long to finish. A full back up of any HDD–powered web server normally takes 20 to 24 hours.
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