Third, the file system in use, such as NTFS, HFS, UFS, ext2, etc., uses extra accesses, reads and writes to the drive, which although small, can add up quickly, especially in the event of many small files vs. Compounding this limitation is the speed of the actual mechanics of the drive motors, heads, or eyes. Other forms of storage media are further limited by the speed of the storage bus, such as IDE (PATA), SATA, USB or FireWire. Second, the maximum throughput of a RAM drive is limited by the speed of the RAM, the data bus, and the CPU of the computer. RAM drives can access data with only the address, eliminating this latency. magnetic bubble, acoustic storage, magnetic tape) must move the information to a particular position before reading or writing can occur. A physical hard drive, optical (e.g, CD-ROM, DVD, and Blu-ray) or other media (e.g. This performance gain is due to multiple factors, including access time, maximum throughput, and file system characteristics.įile access time is greatly reduced since a RAM drive is solid state (no moving parts).
The performance of a RAM drive is generally orders of magnitude faster than other forms of digital storage, such as SSD, tape, optical, hard disk, and floppy drives.
2 History and operating system specifics.
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