5/20/2023 0 Comments Data disk archiveTop trends in disk data backup and recoveryĭisk storage also benefits from a wide range of features such as local and remote replication, data deduplication and fast search capacity. Read our tutorial on disk-based data backup The availability of SATA drives with capacity of up to 2 TB and that can cost less than $150 definitely position the technology to compete with tape. Disk storageĭisk storage has become the biggest challenger to tape as the media of choice for data archiving. Electronics manufacturer Pioneer introduced a 400 GB read-only disk in 2008 and then announced a rewritable version that was to be released in 2010, but low write performance and higher cost will likely not make it a popular archive technology in data centers. Some attempts are being made to promote Blu-Ray technology for home-office backups and archives, but there are no mainstream offerings yet. Mainstream optical cartridges that were common until the mid-2000s could store approximately 9 GB of data, offered read speeds of 8 MBps and write speeds of 4 MBps. News: PowerFile launches optical hybrid storage applianceĬons: Low capacity, slow read performance and even slower write performance, and cost are the elements that made optical media storage lose ground to other technology options for long-term storage. Is optical storage right for the enterprise? Optical media is also more resistant than tape to repeated read passes because it uses laser technology and requires no physical contact with a tape drive's rollers, guides or read heads. ![]() This is obviously somewhat speculative because the technology has been in widespread use for just a little more than 30 years, but tests have shown that it can outlast other media. ![]() Pros: Optical media has long been considered the media with the longest shelf life, with estimates ranging from 30 to 200 years depending on manufacturers. Optical media storage was once very popular for archives as it offered one of the earliest forms of write once, read many (WORM) data overwrite protection, which means that once the media has been written to, it can only be read, not overwritten. While tape's portability may be an advantage, it also introduces media handling and management overhead for off-site storage, and increases the chances for damages due to mishandling. ![]() This introduces data seek time delays that may only be an issue with archive data when you need to access or search it, such as during a legal discovery process. Tape can also be taken off-site at a relatively low cost.Ĭons: Tape is a sequential access storage media, which means data is written to it and read in block sequence (one after the other) a disk can be written to and read from randomly. Beyond the cost of drives and media, a tape kept in a vault consumes no electricity and doesn't use expensive data center floor space. ![]() In addition, tape is still relatively inexpensive when compared to disk. Pros: Tape formats like LTO-5 and DLT-S4 can hold a significant amount of data - 800 GB of uncompressed data - and still achieve a maximum throughput of up to 140 MBps (LTO-5). Read about tape storage handling procedures Learn about tape backup and recovery best practices
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