Speed or reliability

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Re: Speed or reliability

Postby George » Mon Jun 12, 2017 8:43 pm

I learned about backups in system admin classes that I took a long time
ago when Unix/Solaris were the go-to OSs. Unix also has issues with
caching write buffers until a "sync; sync; sync" command string was sent
out to flush cached buffers to disk. We sent that just before logging
off or shutting down the system.
So to ensure accurate backups, we backed up only unmounted partitions.
Think of the data in those unmounted partitions as static bulk data.
That data can be reliably backed up without fear of corruption by
unwritten, cached write buffer data.
Currently, I have a separate Debian OS partition which I use only for
backing up the other disks, partitions, and volumes, whether Linux- or
Windows-based. All those slices, to use an old term, are just that:
static, unchanging, bulk data.
I use imagel (Image for Linux) to backup those items to my external hard
drive (4 TB). And it works like a champ.
To preclude errors such as that induced by RAM issues, I do verify my
backups. But the data itself is good-as-gold.
All the best to each and everyone. And to Dr. Teeth and other hams out
there, I say "73".

There are 10 kinds of people in the world.
Those who understand binary and
Those who don't.
Posts: 35
Joined: Tue Aug 30, 2011 10:28 am


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