Re: Best solution for replication/mirroring

From: Paulo Amorim <pauloamorim@uol.com.br> > >I have an HP Machine with 1Gb RAM, 9Gb internal disks and an external >device with other 30Gb in multiple hard disks. >Note: We have this configuration in double, (2 machines) and we are >expecting to use IDS replication or mirroring. >Which is the best solution ?? >We want to have a backup machine in case of crash in the master one, >and it must be updated the same time the master is updated. >I've heard about replication, but doesn't it use too much machine >resources ?? And what about mirroring ??? Mirroring is useful to provide resilience within one machine, in other words, it allows you to recover from the failure of a disk drive. Replication allows you to provide resilience for the failure of an entire machine. I would be very surprised if you even noticed the performance impact of either. I would certainly recommend you use both, mirror the disks using either hardware or the LVM, and use HDR to provide failover. ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com