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HDD to SSD Migration in Embedded Systems Slide 2

There are many benefits to using a Solid State Drive instead of Hard Disk Drive technology. The first benefit to talk about is the performance of the drive. Latency times due to the inherent mechanical operations of Hard Disk Drives simply are not a factor for Solid State Drives. This results in seek times and access times being about 30 times faster with a SSD over a HDD. Another key factor in drive performance is evident when the application requires sustained writes via interleaving. Due to the physical nature of HDD’s, mechanical issues occur when the HDD tries to perform constant or sustained writes. SSD’s do not have these issues as the architecture has no moving parts. Performance in real life scenarios also depends on the level of fragmentation of the data when using HDDs. This creates an environment that is inherent to data fragmentation, which is why in applications using a HDD users have to “Defrag” their system frequently. With SSDs, defragmentation is an inherent design feature of the “logical to physical translation” of data and wear-leveling within the Solid State Drive. These features prevent the data from fragmenting, thus increasing performance as well. Another key benefit of SSD’s over HDD’s is power consumption. SSD’s require substantially less power to operate in write mode, read mode, and idle mode.

PTM Published on: 2014-01-09