SATA disk drives imperfection

Today, high-capacity series of ATA (SATA) disk drive storage system as a lot of mainstream products, almost all companies have the ability to deploy millions of these mega-capacity storage systems, and the price is reasonable. However, these systems reveal the existence of the SATA disk drive of a special, clear enough: SATA disk drives require companies to carefully control the deployment of storage systems environment.

High-capacity storage systems expose the SATA disk drive, there is a small flaw is its bit error rate problems. Bit error rate is very low, approximately 100 trillion bits error occurred only once. However, if the SATA drive to a specific bit error occurs, the storage system commonly used to protect data against loss of RAID technology can not detect the error.

While for small systems, it is usually not a problem, but as the ever-increasing storage capacity, the issues become more prominent. 10TB of capacity over the system, the specific data bit error probability of the lot. Capacity of more than 100TB system, its error is almost inevitable.

So the question into: a data bit can not be read correctly the results really affect you? Usually, this has not affected unless these systems to store duplicate data after deletion of data (data deduplication technology is the the fastest growing areas of data storage, a technology). If the data are data de-duplication operation, then read the correct bit for each data storage system is very important. Even if only just a bit can not read can lead to multiple files can not be read, as they may have to rely on a particular data bit to complete the reconstruction of the file.

High-capacity SATA-based storage system to solve many of the company's archiving and backup problems. However, existing data problem for SATA but would weaken their strengths, so use the SATA drives to store large amount of duplication of data is not in any case are the best, companies should make identification based on real situations.







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