Handling of tape media is greatly reduced, hence lesser manual intervention is required. QUADStor VTL devices can be accessed over iSCSI, Fiber Channel (FC) and an InfiniBand network. When compared to other disk-to-disk backup (D2D) solutions, virtual tape libraries are high performance solutions with access to the virtual devices over the storage area network (SAN) while a D2D system utilizes a NAS network. Sequential access of data is still maintained by VTL system by writing the backup data to disk in a sequential manner. Benefits of a Virtual Tape Library (VTL) system Improved backup and restore timesĭisk based backup offers faster backup and restore times. Backup applications, policies, licenses etc need not change due to a VTL emulating an existing tape library system. The biggest advantage of a VTL over other disk based backup solutions is its seamless integration into an existing tape backup infrastructure. Backup streams sent to the virtual tape drives are however written to and restored from disk.

The performance of disk based backup is generally consider faster and individual file restores from disk are significantly faster due to faster seek times.Ī VIRTUAL TAPE LIBRARY (VTL) is a disk based backup system which appears to the backup host as a real tape library system. In recent years disk based backup gained popularity due to a drop in disk prices and due to lesser manual intervention. With current tape technology, tape media have a lifetime of 30 years or more and therefore are the number one choice for data archival.

Tape technology remains the most cost effective backup solution till date. What is a Virtual Tape Library ? QUADStor VTL Introduction

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