A. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: A survey of backup techniques, 1998.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....recovery from system failure [11, 19, 20, 25, 34] Most closely related to CVFS are Spiralog [15, 21] and Plan9 [33] which use a log structured file system to do online backup by recording the entire log to tertiary storage. Chervenak, et al. performed an evaluation of several snapshot systems [10]. Version control systems are user programs that implement a versioning system on top of a traditional file system [16, 27, 43] These systems store the current version of the file, along with differences that can be applied to retrieve old versions. These systems usually have no concept of ....

A. L. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: a survey of backup techniques. Joint NASA and IEEE Mass Storage Conference, 1998.

....snapshots to assist recovery from system failure [11, 18, 19, 24] Most closely related to CVFS is Spiralog, which uses a log structured file system to do online backup by recording the entire log to tertiary storage [14, 20] Chervenak, et. al, performed an evaluation of several snapshot systems [10]. Version control systems are user programs that implement a versioning system on top of a traditional file system [15, 26, 43] These systems store the current version of the file, along with differences that can be applied to retrieve old versions. These systems usually have no concept of ....

Ann L. Chervenak, Vivekanand Vellanki, and Zachary Kurmas. Protecting file systems: a survey of backup techniques. Joint NASA and IEEE Mass Storage Conference (March 1998.

....the storage network and on the host. 3. Point in Time Copy Today Research on storage point in time copy techniques is extremely scarce. Since one of the major uses of point in time copy is as a building block for efficient backup, the literature on backup techniques covers partially this topic [13]. In this section, we review some of the major point in time solutions available in the market. In addition, while we focus on disk storage subsystems, we describe two point in time copy techniques at the level of the file system. 3.1 Split Mirror Solutions EMC s TimeFinder [2] 4] and Hitachi s ....

Chervenak, A., Vellanki, V., Kurmas, Z., "Protecting File Systems: A Survey of Backup Techniques", Proceedings Joint NASA and IEEE Mass Storage Conference, March 1998.

....process may go undetected. Potential sources of error abound: tapes are mislabeled or reused or lost, drives wander out of alignment and cannot read their old tapes, technology becomes obsolete. For tape backup systems, a tradeoff exists between the performance of backup and restore operations [1]. A full backup simplifies the process of restoring data since all the data is copied to a continuous region on the tape media. For large file systems and databases, incremental backups are more efficient to generate, but such backups are not self contained; the data for a restore operation is ....

Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas. Protecting file systems: A survey of backup techniques. In Proceedings Joint NASA and IEEE Mass Storage Conference, March 1998.

....the focus of a data warehouse is to provide processing, not archiving. While it is possible for a warehouse to provide data histories, the primary focus of the InfoMonitor is to store complete historical snapshots of the archived information. Our work is also related to file backup systems [3]. While file backup systems are in widespread use, there have not been many academic studies of backup systems. In addition, such systems tend to copy data from a filesystem to a similarly structured backup system, avoiding the heterogeneity that we must deal with here. Furthermore, the ....

....These optimizations will be tested in future work. 7 Related work Considerable work has been done in the area of increasing the reliability of traditional filesystems. Some of this work has focused on data backup. A survey of current backup techniques is presented by Chervenak et al. in [3], and Hutchinson et al. [16] discuss the nature of the backup snapshot. Traditional strategies often require human intervention to mount magnetic tape, run the backup, and store backup tapes in a coherent way. Recently, systems designed to better automate this process have been introduced by IBM ....

Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas. Protecting file systems: A survey of backup techniques. In Proceedings Joint NASA and IEEE Mass Storage Conference, March 1998.

....have investigated implementation issues, although they have focused on different archive architectures than the SAV design we discuss here. The archiving problem is related to the problem of increasing the reliability of file systems. A few investigators have looked at ways to perform file backup [3, 12]. Another approach is to redesign the file system itself to incorporate more reliability features. One idea is to use Redundant Arrays of Inexpensive Disks (RAID) 15] so that disk failures can be overcome. Others have suggested using logs to improve many aspects of the file system, including the ....

Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas. Protecting file systems: A survey of backup techniques. In Proceedings Joint NASA and IEEE Mass Storage Conference, March 1998.

....have investigated implementation issues, although they have focused on different archive architectures than the SAV design we discuss here. The archiving problem is related to the problem of increasing the reliability of file systems. A few investigators have looked at ways to perform file backup [3, 13]. Another approach is to redesign the file system itself to incorporate more reliability features. One idea is to use Redundant Arrays of Inexpensive Disks (RAID) 16] so that disk failures can be overcome. Others have suggested using logs to improve many aspects of the file system, including the ....

Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas. Protecting file systems: A survey of backup techniques. In Proceedings Joint NASA and IEEE Mass Storage Conference, March 1998.

....strike a balance between backup performance, restore performance, and media requirements. We evaluate two of these algorithms here: the traditional backup scheme used by many programs, including UNIX dump, which we call the level scheme, and a new algorithm we developed which we call the Z scheme [6, 1]. To evaluate these backup algorithms, we wrote a trace driven backup simulator. Inputs to this simulator include traces made by Tim Gibson [4] as well as traces of backup activity collected in the College of Computing at Georgia Tech. Our simulation results evaluate the performance of the full ....

A. L. Chervenak, V. Vellanki, Z. Kurmas, and V. Gupta. Protecting File Systems: A Survey of Backup Techniques. In Proceedings. Joint NASA and IEEE Mass Storage Conference, March 1998.

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A. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: A survey of backup techniques, 1998.

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CHERVENAK, A., VELLANKI,V.,AND KURMAS, Z. Protecting file systems: A survey of backup techniques. In Proceedings of the Joint NASA and IEEE Mass Storage Conference (1998).

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A. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: A survey of backup techniques. In Proc. IEEE/NASA Conf. MSS, pp. 17 -- 31, Mar. 1998.

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Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas, "Protecting file systems: A survey of backup techniques," in Proceedings Joint NASA and IEEE Mass Storage Conference, Mar. 1998.

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Ann L. Chervenak, Vivekanand Vellanki, and Zachary Kurmas. Protecting file systems: a survey of backup techniques. Joint NASA and IEEE Mass Storage Conference (March 1998.

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A. L. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: a survey of backup techniques. Joint NASA and IEEE Mass Storage Conference, 1998.

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A. Chervenak, V. Vellanki, and Z. Kurmas. Protecting file systems: A survey of backup techniques. In Proceedings of the Joint NASA and IEEE Mass Storage Conference, March 1998.

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Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas, "Protecting file systems: A survey of backup techniques," in Proceedings Joint NASA and IEEE Mass Storage Conference, Mar. 1998.

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Ann Chervenak, Vivekenand Vellanki, and Zachary Kurmas. Protecting file systems: A survey of backup techniques. In Proc. Joint NASA and IEEE Mass Storage Conference, March 1998.

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