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support.dell.com Maintaining Your Storage System B-1
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Proper use of preventive maintenance procedures can keep your Dell PowerVault 2xxS
storage systems in top operating condition and minimize the need for costly, time-
consuming service procedures. This chapter contains maintenance procedures that
you should perform regularly.
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Everyone inadvertently deletes files at one time or another. Also, hard-disk drives can
fail after extended use, so it is not a question of whether you will eventually lose data,
but when. To avoid such loss of data, you should regularly make backup copies of all
hard-disk drive files. Frequent, regular backups are a must for anyone using a hard-
disk drive.
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The frequency with which backups should be made depends on the amount of stor-
age space on a hard-disk drive and the volatility of the data contained on the drive.
Heavily used systems require more frequent backups than systems in which files are
seldom changed.
Dell recommends that you back up the hard-disk drive(s) at least once a week, with a
daily backup of those files known to have been changed. Following these guidelines
ensures the loss of no more than a day's work in the event of a hard-disk drive failure
or if you inadvertently delete one or more important files.
As further insurance against data losses, you should keep duplicate copies of the
weekly and monthly backups at an off-site location. Doing this ensures that you lose
no more than a week's work, even if one of the on-site backups becomes corrupted.
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Tape drives are fast, convenient, and affordable devices that can back up data and can
often run unattended. Dell offers tape drives and recommends these drives and their
associated backup software for use as system backup devices.