Dimitry Sibiryakov wrote: >> In my own cases, ANY downtime during office hours is unacceptable, so any >> > failure that brings the whole system down would result in penalties! >> > Organised >> > downtime is possible on many sites, but some sites are running 24/7, So we >> > maintain data in a manor that the system will work with elements down, >> > but the >> > database operation must be maintained. Firebird has been running reliably >> > for >> > many years on these sites, when other services HAVE crashed, to the >> > extent that >> > services have been moving onto our framework due simply to it's >> > reliability:) >> > >> > Customers care very much about downtime ... especially if it HAS to happen >> > simply for maintenance reasons. > But maintenance doesn't inevitable cause downtime. Maintenance of one > piece of a system > can't stop whole system if other pieces will do all the job. This is the main > idea behind > RAID1-6, for example. What's wrong with your system if it cannot work without > only one > part of it?..
Backup and restore take a finite and growing amount of time with 10+ years worth of data. It is rare to need to run a cycle, but when the need does arise then it has to be handled. The point about loosing part of the system relates to things like loosing a ticket printer or display device ... not critical since the users can work around the losses, and as long as *A* copy of the database can be seen by a web server, they can continue to work. I've even had RAID systems fail in the past, so nowadays it's a lot more reliable to have simple duplicate machines on the system each capable of providing the services needed. -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
