Virtual tape library free download. Dokany Dokany is the fork of Dokan, a user mode file system library that lets you easily and safely develop.
- Nov 04, 2016 A virtual tape library (VTL) is a disk-based backup system which appears to the backup host as a real tape library system. But Backup streams are written to and restored from disk.Virtual Tape Library is a piece of software which will emulate wired verity of Tape Libraries and tape drives.
- Evolution Of The Virtual Tape Library VTLs have been around a long time, as shown in Figure 1. When tape was slow and backup windows were shrinking in mainframe datacenters three decades ago, somebody smart came up with the idea of 'front-ending' the tape system with a cache of disk drives.
- Companies involved in sensitive data handling are required to adhere to regulatory requirements for secure data storage and archival. This document provides information on how to configure StarWind Virtual Tape Library (VTL) for high data security and resilience to malicious software or activities.
- Nov 07, 2016 The purpose of this blog is to explain what a Virtual Tape Library (VTL) is and how IBM i (AS400/iSeries) users can benefit from this technology. What Is A VTL? A Virtual Tape Library, or VTL, is a disk-based technology that emulates a tape library for backup.
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A virtual tape library (VTL) is a data storagevirtualization technology used typically for backup and recovery purposes. A VTL presents a storage component (usually hard disk storage) as tape libraries or tape drives for use with existing backup software.
![Virtual Virtual](/uploads/1/2/5/0/125041342/223297404.jpg)
Virtualizing the disk storage as tape allows integration of VTLs with existing backup software and existing backup and recovery processes and policies. The benefits of such virtualization include storage consolidation and faster data restore processes. For most mainframe data centers, the storage capacity varies, however protecting its business and mission critical data is always vital.
Most current VTL solutions use SAS or SATAdisk arrays as the primary storage component due to their relatively low cost. The use of array enclosures increases the scalability of the solution by allowing the addition of more disk drives and enclosures to increase the storage capacity.
The shift to VTL also eliminates streaming problems that often impair efficiency in tape drives as disk technology does not rely on streaming and can write effectively regardless of data transfer speeds.
By backing up data to disks instead of tapes, VTL often increases performance of both backup and recovery operations. Restore processes are found to be faster than backup regardless of implementations. In some cases, the data stored on the VTL's disk array is exported to other media, such as physical tapes, for disaster recovery purposes (scheme called disk-to-disk-to-tape, or D2D2T).
Alternatively, most contemporary backup software products introduced also direct usage of the file system storage (especially network-attached storage, accessed through NFS and CIFS protocols over IP networks) not requiring a tape library emulation at all. They also often offer a disk staging feature: moving the data from disk to a physical tape for a long-term storage.
While a virtual tape library is very fast, the disk storage within is not designed to be removable, and does not usually involve physically removable external disk drives to be used for data archiving in place of tape. Since the disk storage is always connected to power and data sources and is never physically electrically isolated, it is vulnerable to potential damage and corruption due to nearby building or power grid lightning strikes.
- 1History
Virtual Tape Library Software Mac
History[edit]
The first VTL solution was introduced by Cybernetics in 1992 under the name HSTC (high speed tape cache).[1] Later, IBM released a Virtual Tape Server (VTS) introduced in 1997. It was targeted for a mainframe market, where many legacy applications tend to use a lot of very short tape volumes. It used the ESCON interface, and acted as a disk cache for the IBM 3494 tape library. A competitive offering from StorageTek (acquired in 2005 by Sun Microsystems, then subsequently by Oracle Corporation) was known as Virtual Storage Manager (VSM) which leveraged the market dominant STK Powderhorn library as a back store. Each product line has been enhanced to support larger disk buffer capacities, FICON, and more recently (c. 2010) 'tapeless' disk-only environments.
Other offerings in the mainframe space are also 'tapeless'. DLm has been developed by EMC Corporation, while Luminex has gained popularity and wide acceptance by teaming with Data Domain to provide the benefits of data deduplication behind its Channel Gateway platform. With the consequent reduction in off-site replication bandwidth afforded by deduplication, it is possible and practical for this form of virtual tape to reduce recovery point objective time and recovery time objective to near zero (or instantaneous).
Outside of the mainframe environment, tape drives and libraries mostly featured SCSI. Zmodeler 3.2.0 crack. Likewise, VTLs were developed supporting popular SCSI transport protocols such as [SCSI Parallel Interface|SPI]] (legacy systems), Fibre Channel, and iSCSI.
The FalconStor VTL is the foundation of nearly half of the products sold in the VTL market, according to an Enterprise Strategy Group analyst.[2]
In mid-2010s VTLs got a rebirth thanks to hi-capacity 'archive' drives from Seagate and HGST and more popular 'tape in cloud' and Disk-to-Disk-to-Tape (often in cloud) scenarios. [3]
Tape Virtualization to tape[edit]
In 2017, Consolitape LLC released the first virtual tape appliance using tape as a host medium.
See also[edit]
- Disk staging for an alternative approach
References[edit]
- ^'History of VTL/IBM'.
- ^'InfoStor ESG Report on FalconStor Virtual Tape Library'.
- ^'The Rise, Fall, and Rise, of Virtual Tape Libraries'.
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![Virtual Tape Library Software Virtual Tape Library Software](/uploads/1/2/5/0/125041342/297112897.jpg)
The AWS Storage Gateway service can be configured to act as a Virtual Tape Library (VTL) that spans from your on-premises environment, where your production applications are, to the AWS cloud's highly scalable, redundant and durable storage services, Amazon S3, Amazon S3 Glacier, and Amazon S3 Glacier Deep Archive.
The tape gateway presents the Storage Gateway to your existing backup application as an industry-standard iSCSI-based VTL, consisting of a virtual media changer and virtual tape drives. You can continue to use your existing backup applications and workflows while writing to a collection of virtual tapes stored on massively scalable Amazon S3. When you no longer require immediate or frequent access to data contained on a virtual tape, you can have your backup application archive it from the virtual tape library into Amazon S3 Glacier or Amazon S3 Glacier Deep Archive, further reducing storage costs.
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Storage Gateway is compatible with many common backup applications. The VTL interface eliminates large upfront tape automation capital expenses, multi-year maintenance contract commitments, and ongoing media costs. You pay only for the amount of data you write to tape, and scale as your needs grow. The need to transport storage media to offsite facilities and handle tape media manually goes away, and your archives benefit from the design and durability of the AWS cloud platform.