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A large tape library, with tape cartridges placed on shelves in the front, and a robotic arm moving in the back.Visible height of the library is about 180 cm. The nearline storage system knows on which volume (cartridge) the data resides, and usually asks a robot to retrieve it from this physical location (usually: a tape library or optical jukebox) and put it into a tape drive or optical disc ...
Google Cloud Storage is an online file storage web service for storing and accessing data on Google Cloud Platform infrastructure. [1] The service combines the performance and scalability of Google's cloud with advanced security and sharing capabilities. [2] It is an Infrastructure as a Service , comparable to Amazon S3.
Nearline storage is typically less accessible and less expensive than online storage, but still useful for backup data storage. A mechanical device is usually used to move media units from storage into a drive where the data can be read or written. Generally it has safety properties similar to on-line storage.
This storage is presented to the user as a single set of network shares. Drive extender technology expands on the normal features of concatenation by providing data redundancy through software – a shared folder can be marked for duplication, which signals to the OS that a copy of the data should be kept on multiple physical drives, whilst the ...
Disk-based backup refers to technology that allows one to back up large amounts of data to a disk storage unit. It is often supplemented by tape drives for data archival or replication to another facility for disaster recovery. Backup-to-disk is a popular in enterprise use for both technical and business reasons.
Site-to-site backup. backup, over the internet, to an offsite location under the user's control. Similar to remote backup except that the owner of the data maintains control of the storage location. Synthetic backup. a restorable backup image that is synthesized on the backup server from a previous full backup and all the incremental backups ...
Several models of the 3851 were available. The smallest A1 holding 706 cartridges storing 35.3GB, while the largest A4 held 4,720 cartridges storing 236GB in a 20-foot (6.1 m) long unit. All of the units were also available in the "B models" which added a second controller for on-line backups, as well as offline storage.
Can contain up to 1536 drives (2.5": 10K or 15K RPM HDD or enterprise flash SAS-2, or 3.5": Nearline-SAS drives) + 120 1.8" flash cards in the High-Performance Flash Enclosure (HPFE) High Performance Flash Enclosure: integrates and optimizes flash technology in the DS8870 (High-performance flash enclosure fits into existing DS8870 bay)
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