Solid State Drives (SSDs) vs SD cards for video recording
Our geoDVR systems use high-speed Solid State Drives for storing captured video and geospatial data, rather than SD cards that other systems on the market commonly use. We choose to use SSDs with our products for several reasons:
SSDs are capable of utilizing full SATA3 bandwidth – up to approximately 500MB/second Read and Write speeds. This ensures the capacity to handle multiple concurrent high-bandwidth video streams with no hiccups in performance.
The Solid State Drives we use also have a superior IOPS (Input/Output Operations Per Second) compared to SD Cards, rated at approximately 90K Read and Write, which can complete multiple jobs faster than typical SD cards. This means that if the I/O subsystem is stressed (such as when writing multiple video streams to disk), jobs complete quicker with less risk of data corruption occurring than with an SD card
The separate OS/Firmware drive on the geoDVR is also on an SSD, which ensures fast start-up time
The NAND memory cells in the SSDs we use are rated for up 75TB of Write Endurance. Additionally, solid state drives include their own DRAM Cache and hardware controller, with features such as garbage collection, wear-leveling, and support for TRIM, which further increases the expected lifespan of a Solid State Drive. This helps ensure that you do not run into unexpected storage failure, which can waste time and money on lost mission data.
For these reasons, we are excited to use Solid State Drives standard with every geoDVR system we produce. Our systems use two separate SSDs – one for the System/OS drive, which ensures a quick boot time and excellent application performance, and a separate removable drive for captured video data. We also include a SATA3->USB3 adapter, which allows you to plug the removable SSD into a different computer to quickly and easily retrieve the data.