Disaster Recovery Plesk _ Speed Up Backup Restoration procedure with possibility to open multiple process pleskrestore running
Allow the pleskrestore command to be run under different example accounts
pleskrestore --restore domains1.tar -level clients [<option_N> [<param>]]
pleskrestore --restore domains2.tar -level clients [<option_N> [<param>]]
pleskrestore --restore domains3.tar -level clients [<option_N> [<param>]]
in order to obtain more simultaneous processes for the restore and therefore speeding up the recovery procedure of an entire server through plesk backups, in case of emergency.
It is very important to allow you to run multiple simultaneous processes, also because today's CPUs and disks are very powerful and performing, if in case of emergency recovery, 8 restore commands are launched, the recovery process is speeded up by 8 times I respect the procedure you currently provide.
Currently the restore process through the CLI, performs the restore domain by domain, with servers with many domains, the restore would take days!
I hope that you will soon consider modifying your restore procedure that is no longer up to date and very slow and obsolete.
Joseph D.
shared this idea
There are two major bottlenecks for restores: Network bandwidth for downloading the archive from an external FTP server (either on the FTP server or on the local host) and cpu power on unpacking the compressed archives. Both are already maxed in the current restore algorithms. In addition, disk I/O capabilities can limit the restore speed. Specificially uncompressing creates a high cpu load and lots of disk I/O transactions. Running several such processes concurrently could stall the server and will not necessarily increase the restoration speed. Dozens of test restores on real production machines with 12-core CPUs and backup large archives (e.g. 500 - 800 GB) have shown that it is a much better and safer approach to do one such restore at a time as two of them will already overload a machine.
For these reasons we decline this request. However, rest assured that speed is always on the agenda. If there are reasonable, reliable ways to enhance backup or restoration speed, Plesk will implement them as it has in the past.
-- PD
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Anonymous
commented
actual test restore time:
Customer Data: 1.57TB
Domains: 20K (5K Webhosting Subscriptions, 15k Domain only)
Mysql DBs: 2.5K
duration: 7 days