San on FromDual GmbH

Be cautious when using Virtualized System with your Database

oli.sennhauser@fromdual.com (Oli Sennhauser) — Wed, 08 Jun 2011 15:01:29 +0000

A customer rose a support case with a problem on his Master-Master set-up. The 2^nd Master claims to have a problem:

FromDual consulting tool collection

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 13 Mar 2010 11:37:13 +0000

The following tools we use sometimes for our consulting engagements…

MySQL on VMware Workstation/DRBD vs. VMWare ESX Server/SAN

oli.sennhauser@fromdual.com (Oli Sennhauser) — Fri, 22 Jan 2010 17:05:00 +0000

Or an active-active failover cluster à la VMware.

Today I have learned about a totally crazy/cool looking architecture where the expensive VMware ESX server was replace by a free/cheap VMware Workstation version in combination with DRBD.

Be careful when using SAN

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sun, 06 Mar 2011 10:13:39 +0000

Be careful when using SAN (Storage Area Networks) or similar shared storage solutions (and any other virtualization, consolidation or cloud solutions).