i got one of these and straight away got rid of it
hard drives themself are a lot faster
ssd disk are not that great they work slower
the only thing good about them is that you dont hear them and the heat problems
the bad news is they are failing bigtime and once that happens
how your going to recovery from 40gb flash chips
but they fail bigtime and once that happens its goodbye data.
Disadvantages
* Flash-memory drives have limited lifetimes and will often wear out after 1,000,000 to 2,000,000 write cycles (1,000 to 10,000 per cell) for MLC, and up to 5,000,000 write cycles (100,000 per cell) for SLC.[27][28][29][30] Special file systems or firmware designs can mitigate this problem by spreading writes over the entire device, called wear leveling.[31]
* Wear leveling used on flash-based SSDs has security implications. For example, encryption of existing unencrypted data on flash-based SSDs cannot be performed securely due to the fact that wear leveling causes new encrypted drive sectors to be written to a physical location different from their original location—data remains unencrypted in the original physical location. It is also impossible to securely wipe files by overwriting their content on flash-based SSDs.[citation needed] However, drives that support the ATA command TRIM allow for secure file deletion, as deleted blocks are cleaned in the background before writes[32].
* As of early-2010, SSDs are still more expensive per gigabyte than hard drives. Whereas a normal flash drive is US$2 per gigabyte, hard drives are around US$0.10 per gigabyte for 3.5", or US$0.20 for 2.5".
* The capacity of SSDs is currently lower than that of hard drives. However, flash SSD capacity is predicted to increase rapidly, with drives of 1 TB already released for enterprise and industrial applications.[22][33][34][35][36]
* Asymmetric read vs. write performance can cause problems with certain functions where the read and write operations are expected to be completed in a similar timeframe. SSDs currently have a much slower write performance compared to their read performance.[37]
* Similarly, SSD write performance is significantly impacted by the availability of free, programmable blocks. Previously written data blocks that are no longer in use can be reclaimed by TRIM; however, even with TRIM, fewer free, programmable blocks translates into reduced performance.[38]
* As a result of wear leveling and write combining, the performance of SSDs degrades with use.[39][40]
* SATA-based SSDs generally exhibit much slower write speeds. As erase blocks on flash-based SSDs generally are quite large (e.g. 0.5 - 1 megabyte),[11] they are far slower than conventional disks during small writes (write amplification effect) and can suffer from write fragmentation.[41] Modern PCIe SSDs however have much faster write speeds than previously available.
* DRAM-based SSDs (but not flash-based SSDs) require more power than hard disks, when operating; they still use power when the computer is turned off, while hard disks do not.[42]
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