Which two types of physical storage are commonly found in a data centre?

Hard Disk Drives (HDD) and Solid State Drives (SSD) are the two types of physical storage that are commonly found in a data centre due to their reliability, capacity, and performance characteristics that suit enterprise-level needs.

HDDs are widely used for their large storage capacities and cost-effectiveness, making them suitable for bulk storage of data. They utilize spinning disks to read and write data, which allows for substantial amounts of information to be stored economically.

SSDs, on the other hand, are known for their high speed and performance. They use flash memory technology, which enables faster data access and transfer rates compared to traditional HDDs. This speed is crucial for data centre operations, where quick read/write times can significantly enhance the performance of applications and services hosted on the servers.

In a data centre environment where operational efficiency, speed, and storage capacity are critical, HDDs and SSDs are preferred choices. Other options are less commonly used in contemporary data centres, as they do not offer the same level of performance or capacity for large-scale data management. For example, magnetic tape and CD-ROMs are outdated for primary storage purposes; floppy disks and USB drives are not suitable for the high-volume, high-performance needs of a data centre