Friday, May 14, 2021

Synch Up With Rsynch for Quick-Restore Backup

As we are all (I hope …) painfully aware, decent backups are absolutely
vital. Last week I looked at a potential option for offsite backup, and
solutions like Bacula are excellent for
providing a stable, reliable onsite backup, with historical data available.

But these solutions don’t provide rapid access to the backed-up
data in the event of a major disk crash (e.g., if a centralized home
disk bites the dust, leaving everyone on the system unable to work).
What you want here is an instant slot-in replacement, and for this,
rsync is an excellent option.

rsync doesn’t keep historical data, but if all you want is a
nightly current snapshot, it does that very well. You can use a “proper”
backup solution for your historical data.

Either set rsync up onto a disk that you can physically slot in to your
regular or another server; or use a spare machine that can be plugged in
immediately instead (e.g., by changing your NFS mappings). Set up a

cron job to synchronise nightly, and you’re done. In the event
of a serious main server crash, just slot in the new disk and get everyone up
and running again with only 24 hours of data lost — which if your backup
schedule permits, you can then recover at leisure.

Be aware that although this will work if the main disk crashes overnight — as
rsync will not be able to access it so won’t run — it will not work if something more subtle goes wrong. In this case, both disks will have corrupt
data, and you’re back to using your normal backups for a regular restore.

This article was first published on ServerWatch.com.

Similar articles

Latest Articles

Database-Tuning Platform Launches and...

PITTSBURGH — A team out of Carnegie Mellon University is launching its automatic database-tuning product today with the help of $2.5 million in funding.   OtterTune,...

Top 10 Professional Services...

Professional services automation (PSA) software aims to offer service-based companies most of the software they will need to run their businesses in one package....

What is Data Aggregation?

Data aggregation is the process where raw data is gathered and presented in a summarized format for statistical analysis. The data may be gathered...

Dell APEX: Our...

One of the missteps IBM made last century was collapsing their sales model, which was services based, to generate a short-term revenue spike. Up...