Hard Drive Types and Sizes for CCTV
Hey everyone, Joe from SCK here, and today we wanted to talk about the different hard drive options you have available for your CCTV systems, why it matters, and how this can be of benefit. Firstly, do you know what the Hard Drive inside your CCTV NVR or DVR is for, or what it does? There’s a pretty good chance you’re already familiar with the idea of what a hard drive is, or maybe you’ve heard the term used before but are mostly unfamiliar with the specifics. Well, let us start first, by talking a bit about what a hard drive even is and how they work. This will create a better framework of understanding.
So what is a Hard Drive? A hard drive is a storage device used to house data in computer technology. Unlike other storage media which will get into a little bit later- Hard drives utilize Magnetic rotating disks and have mechanical components to them. All the information across any of our computers or tech devices is written in digital code, which means it can be broken down into extremely long series of Zeros and Ones (0’s and 1’s)- also known as ‘binary’. Each one of these 0’s or 1’s is called a ‘bit’ of data. Data is arranged into quantifiable measurements- here is a table of some of the measurement names and quantities. You may have seen or heard many of these used before
- 8 Bits = 1 Byte
- 1024 Bytes = 1 Kilobyte
- 1024 kilobyte= 1 Megabyte
- 1024 Megabytes = 1 Gigabyte
- 1024 Gigabytes = 1 Terabyte
- and so on…
This data is stored primarily on Hard Drives on the various computer systems throughout the world. There are many different types of storage devices today that all perform similar tasks, albeit using different technologies, methods, and speeds in exchange for varying levels of reliability. As the usage purposes for our data expand globally, while at the same time programs, images, and documents become more complex and consume more data per instance, our need for varying kinds and growing quantities of storage has also had to expand.
Hard Drives, and other storage devices such as SD cards, USB Flash Drives, Solid State Drives, and more, are all used to accomplish different types of goals for various storage reasons and capacities. Take SD cards for example. These small flash memory cards are used primarily in devices that need a semi-long term form of storage that is also easily removable and usable in more than one device. USB flash drives through similar- tend to offer less storage capacity for the cost- in turn, are far easier to access, and usable with many more types of devices. Both are purposeful but find use more commonly in different areas.
While many modern PCs and Laptops still use hard drives today, there is a very obvious shift to move these types of devices to use more SSDs- or solid-state drives. Solid-state drives are extremely fast disks, which can carry storage capacities rivaling consumer hard drives. There are two common SSDs today, SATA SSDs, and NVME M.2 SSDs. Either one of those disks will offer an incredible upgrade in speed for loading and writing to the disk. This is especially useful for Office, Home, Gaming, and Media production PCs. There is a trade-off however, the cost per ‘byte’ for SSDs is substantial compared to hard disks. For this reason, many PCs today use one, smaller SSD for the operating system and core applications but also contain a larger capacity Hard Drive for storing documents, and media that doesn’t require the same read or write speeds to function properly.
There’s another important trade-off between Hard Drives (HDDs) and SSds too, and this is where the CCTV portion of our explanation comes in. While SSDs are better at reading and writing speeds when those events do occur, they are not efficient for long term constant reading and writing. Hard Drives, which are mechanical devices that write their data to magnetic plates, are built to withstand a bit more punishment than their SSD counterparts. Most modern servers still use many hard dirks in complex redundancy configurations. Though the mechanical components in a hard disk are prone to failure themselves, this would be over the course of time and natural wear and tear. This is in comparison to say, an SSD being written to and read from 24/7 and failing within a few weeks because it cannot handle this stress.
To take it further, here at Security camera king we exclusively carry the Western Digital Purple CCTV HDDs.Even more than a normal HDD, these CCTV specific disks are designed by the factory to be extra durable, and super tough. They use tougher more durable mechanical components and have a specific RPM for the rotation of the plates that allows the disk to be accessed for read and write actions virtually nonstop, without fear of the disk breaking down.
The more cameras you have, the higher quality those cameras are, and how often they record coupled with the amount of Hard disk space you have are all major factors that contribute to how much footage (or how many ‘days’) your CCTV recorder can save. Always consult with one of our Sales Pros before making a purchase as they can calculate what your needs will be based on your equipment, ensuring you have the right disk(s) for the job! Check out our HDD options below, but again I stress that you should always call in before making a final purchase!
Thanks for joining us today as we talked about the importance of your Hard Drive in your CCTV recorder. For any questions on product compatibility, availability or any other information don’t hesitate to give our Sales Pro’s a call at561-288-5258 . Don’t forget to subscribe to our YouTube Channel for more Tutorials and CCTV info. Until Next time, Stay Safe!
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