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File Backups

By cmrober ·
What is your recommendation for frequency and number of backups to do on files? What I mean is, should I do a rotational 3 day backup where I always have something to fall back on that is older than the previous backup? Hope this is clear to you. Thanks, Craig

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File Backups

by Ann777 In reply to File Backups

Depends on a number of factors. Are you doing incremental backups or full? How important is your data? How much backup media do you have?

My usual practice is to do a full backup once a week (sually Sunday) and incremental backups every day. Then Monday I check the backup, and recycle the incrementals from the week before. Every first portion of the month, I cycle through and keep a monthly. And the monthlys are kepts and rotated out just over a year (like 14 months).

But that is corporate, and ultimately if you are talking personal or small business, you might want to rotate backups another way.

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File Backups

by cmrober In reply to File Backups

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by MPTechOnline In reply to File Backups

More detailed information would be needed to make a proper call on this one since a lot depends on the value of your information. What I mean is, is this important data that you can't afford to loose such as on a Server with multiple user files or is it just data for personal use.

If in a network environment then I would do a backup every night. You could do a full backup during the weekdays and then an incremental backup over the weekend if there isn’t much use. Or you could do full backups only twice or three times a week and the rest can be incremental.

Again, this all depends on your perception of how valuable your data is.

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File Backups

by cmrober In reply to File Backups

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by SyscoKid In reply to File Backups

In some of our sites we use a 9-tape rotation. Tapes are labeled Monday, Tuesday, Wednesday, Thursday, Friday 1, Friday 2, Friday 3, Friday 4 and Friday 5.

We do a differential backup Monday through Thursday, and a full backup on Friday, rotating through the 5 Friday tapes.

(The 5 Fridays are probably excessive, but it wasn't my decision.)

This has worked well for us. If you discover on Friday that an important file was deleted on Tuesday, you can pull it off the Monday tape. If youdiscover it was deleted two weeks ago, you can pull it off one of the Friday tapes.

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by cmrober In reply to File Backups

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by TimTheToolMan In reply to File Backups

Hi,

We used a 23 tape system where each nights full backup (But occasionally incremental where the data volume was especially high) was kept for a week. 7 tape rotation.

But Friday night's backups were themselves kept for a month and the firstFriday of the month tape was kept for a year.

This allowed us to have a fair stab at recovering data no matter when it was discovered lost.

Furthermore, we sent the backup from two nights ago offsite, leaving us with last night's backup onsitefor those immediate emergency restores.

It was a good system. Requires 23 tapes, though.

Cheers,
Tim.

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by cmrober In reply to File Backups

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by cmrober In reply to File Backups

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