How to plan NAS disk storage backup

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How to plan NAS disk storage backup

no matter how large-scale enterprises are, they are faced with the dilemma of how to backup the growing amount of data and reduce the use of traditional tape systems. In this regard, enterprises gradually began to use disk based backup solutions as the media. The backup server can copy the data to the disk system in the data center. This will speed up backup, make data recovery more reliable, and eliminate the need for complex tape management. Disk based backup solutions can ensure better backup and recovery performance and long-term integrity, availability and security of data. Therefore, disk based backup solutions have become one of the hottest topics in the data storage industry

when considering the disk backup system, many related problems need to be considered when selecting the appropriate solution for a specific environment. Enterprises with data volume between 1TB and 100TB tend to establish disk based backup systems and use them as NAS. NAS is a hard disk storage device with its own network address, which is not attached to the computer where the network workstation application software is running. NAS devices are attached to a local area (usually Ethernet) and assigned an IP address

enterprises with more than 100TB of data and a fibre channel environment tend to establish a disk backup system with a VTL interface in front of the disk. Fibre channel is especially suitable for connecting computer servers to shared storage devices and connecting storage controllers to drives

to understand the differences between NAS and VTL, you must always keep the following points in mind:

on site disk backup - short term storage

first, you must determine how long the data retention time of the disk on the basic backup device needs. If you plan to keep the data on the field disk for one or two weeks, you can use any disk. If you plan to have short-term retention on site, any standard storage backup solution can meet the requirements. The three most common candidates are:

disk group with SCSI or SAS interface

NAS server with Ethernet interface and disk

fibre channel connected with VTL software before the storage device

VTL can make the disk storage device in the system as convenient as a tape library with backup software

on site disk backup - long-term storage

if you plan to conduct on-site backup for four weeks or run stably for a longer time, or leave the station for several years to retain before UV curing, then the number of standard disks becomes difficult to manage and the cost is also very high. Therefore, data reduction technology can save more backup records with only a small part of the space required when using standard disks

in this case, you can consider using a disk backup system with built-in data deduplication technology. In the backup system with built-in data deduplication technology, there is a data reduction technology, which can identify the same large pieces of data in multiple data files, and then store them only once. In this way, you can use less disk space to store data

in the next level decision-making system, there are two interfaces to the data deduplication system and two data deduplication technologies. The two interfaces are NAS interface and VTL interface. Two kinds of data deduplication technologies are byte level data deduplication technology and block level data deduplication technology

byte level weight also meets the relevant requirements of GB, ISO, ASTM, Jin and other experimental methods. 8. Circuit breaker Protector: protect the compactor, extend the service life, seek complex data deletion technology will compare byte by byte, and then only store different bytes. Block level data deduplication technology will divide backup jobs into 8KB modules. Then compare through the arrangement of modules, find out the duplicate modules, and then store only different modules. The data reduction rates of these two technologies are similar. (end)

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