When examining netbooks, there are some items to keep in mind. Many drive manufactures, both large and small, are coming out with new techniques to improve the read and write performances of SSDs, making them more attractive. In addition, Western Digital is planning to move into the enterprise SSD space. Other vendors that entered the SSD enterprise solutions market before Seagate include STEC with its fiber-channel interface ZeusIOPS product and Intel with its X25 product. In December 2009, Seagate released the Pulsar, a 2.5-inch on-server drive. But with the price for SSDs dropping and the number of suppliers increasing, it is possible that entire databases are going to be running in-memory. They are mostly found in netbooks, which are popular due to their size and cost. If you have not run into one yet, you will. Solid-state drives (SSDs) are becoming more typical in investigations. It manages error correction, wear leveling, and data distribution so that all data written is spread evenly across all physical blocks of the SSD.ĭiane Barrett, Gregory Kipper, in Virtualization and Forensics, 2010 Solid-State Drives
Strictly speaking, SLC, MLC, or TLC doesn’t last fever but they are protected by a flash controller that is always built into an SSD. There is another type of flash that Samsung adopted called is triple level cell (TLC). In contrast, multilevel cell (MLC) will accommodate two bits, which are “00,” “01,” “10,” and “11.” In comparison with MLC, SLC has ten times the endurance (flash) of MLC but it comes with a high cost. SLC only stores a single bit, which is either a “1” or “0” bit. To resolve these issues, single level cell (SLC) has been adopted for many enterprise storage applications. Sometime, it may be slower than a high end HDD. Another issue is that when the SSD does sequential writing for new data it has to follow the process of erasing and then writing. One of them is that memory cells do not like to be flashed too frequently because after many flash cycles (erasing), the transistor gate becomes worn out and eventually has to be broken down. There are two issues with flash technology.
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