Thursday, July 02, 2009

A “Multivendor Post” to help our mutual iSCSI customers using VMware

Very nice article explaining iSCSI in ESX environment

Platespin Recon 3.6 - bugs and issues

Platespin Recon 3.6 have big issues with hardware inventory of some servers. It can hang your server during CPU model checking!!! Platespin released hotfix for that. But that's not all. When you use database PostgreSQL 8.3 which is bundled with Recon it has significant performance issues. I was waiting for some reports several hours!!! I have troubleshooted and realized that there is some problem with SQL communication between Plaspin Recon application server and PostgreSQL. You can find error messages in PostgreSQL log file. It says something about abnormal client termination. If you use MS SQL Server it works like a sharm.

MS Windows Virtual Memory Management on consolidated virtual workloads

When you virtualize lot of MS Window workloads you can observe lot of "Memory Pages/s" from virtual machines to physical disk subsystem (system swaping inactive memory pages to hard drive) . If you haven't enough IO performance in your storage your virtual machines becomes slow. For virtualization is normaly used SAN environment. Don't forget design capacity and performance on your storage for page files. If you want to tune your MS Windows and optimize page file IOs to your storage try disable (if you have enough RAM) or optimize Windows Page File.

Articles about this topic: