A sur­vey of per­sonal backup so­lu­tions

OpenSource For You - - ADMIN LET’S TRY -

Over the years, I have used many meth­ods to main­tain backup copies of data. The first method ob­vi­ously was to main­tain a copy of each file. Then I started stor­ing com­pressed ver­sions of the data and us­ing a time­stamp for each backup. Just as en­ter­prises have had to ad­dress the Big Data ex­plo­sion, I too have not been im­mune to the prob­lem of large vol­umes of data. Due to data vol­umes and the fre­quency of changes, the time­stamp method of main­tain­ing back­ups is not prac­ti­cal. Ad­di­tion­ally, each zip ar­chive ends up with one copy of the file and when a par­tic­u­lar copy is needed, it is dif­fi­cult to fig­ure out the most rel­e­vant copy.

I also tried us­ing ver­sion-con­trol soft­ware like SVN. The prob­lem with ver­sion con­trol is that it’s sub-op­ti­mal for bi­nary data. In other words, ver­sion con­trol is best suited for text files, where ver­sions are stored us­ing the ‘dif­fer­ence’ method. In the case of bi­nary files, most such so­lu­tions sim­ply copy the bi­nary file into the repos­i­tory, as

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