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Re: Are there plans to add data compression feature to postgresql?

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Chris Browne wrote:
There's a way that compressed filesystems might *help* with a risk
factor, here...
By reducing the number of disk drives required to hold the data, you
may be reducing the risk of enough of them failing to invalidate the
RAID array.

And one more way.

If neither your database nor filesystem do checksums on
blocks (seems the compressing filesystems mostly do checksums, tho),
a one bit error may go undetected corrupting your data without you
knowing it.

With a filesystem compression, that one bit error is likely to grow
into something big enough to be detected immediately.


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