Choosing a Tape Drive

Written by Linus Chang

Tape drives remainrepparttar leading technology used by organizations for backup and archiving. However,repparttar 136930 plethora of tape drives onrepparttar 136931 market can make choosingrepparttar 136932 appropriate tape drive a confusing task. How do you select a tape drive that satisfies your needs without blowingrepparttar 136933 budget? The following are just some ofrepparttar 136934 main factors to consider.

1. Capacity.

Select a tape drive that has sufficient capacity to store your backups. Tape drives are able to compress data so that more data may fit onrepparttar 136935 tape, which is why manufacturers specify both a native capacity and a compressed capacity, usually with a compression ratio at 2:1. However, highly-compressed files such as those in video and sound formats are hardly compressible at all. For this reason, do not heedrepparttar 136936 specified compressed capacity when choosing a tape drive.

A good way to determinerepparttar 136937 size ofrepparttar 136938 backup job after compression is to study logs of past backups. If these are unavailable, it is safe to assume thatrepparttar 136939 data can be compressed at a ratio of 1.4:1, unlessrepparttar 136940 hard drive contains an usually large number of highly-compressed files.

2. Transfer rate.

The transfer rate ofrepparttar 136941 tape drive is becomes important when there is limited "window of opportunity" in which backup jobs may run. It is often desirable for backups to take place duringrepparttar 136942 night when network use is at its lowest. Select a tape drive that is capable of completing a backup job within your window of opportunity. For instance, to back up 400GB per night, you will require a transfer rate of about 30GB/hour.

A little known fact about tape drives is that data must be supplied to them at a sufficient rate in order to keep them streaming, or elserepparttar 136943 tape suffers from start-stop motion. This motion severely degradesrepparttar 136944 life ofrepparttar 136945 drive and tapes andrepparttar 136946 reliability of backups.

Quick System Restore with ASR Backups

Written by Linus Chang

ASR (Automated System Recovery) is a feature available onrepparttar Windows XP Pro and Windows Server 2003 operating systems for quick and efficient system backup and restore.

Typically,repparttar 136929 restore process involves reinstallingrepparttar 136930 operating system and configuring all physical storage to their original settings before restoring data and settings. Rebuildingrepparttar 136931 system in this way is a time-consuming and often problematic task, causing many headaches for administrators and technical staff.

ASR significantly automatesrepparttar 136932 process of rebuildingrepparttar 136933 system, thus allowing you to fully restore your system quickly and efficiently inrepparttar 136934 event of an emergency or complete system failure, even to a "bare" computer with no software installed.

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