Category: IT-howtos

Introduction Recently I came across a minor disaster: one of our customers was missing thousands of emails from his "Deleted Items" folder on an Exchange hosted mailbox. Apparently there are personalities that interpret the Inbox as all-that-is-needed location, and Deleted Items as all-that-has-to-be-archived pot. In such case you will need as a sysadmin reasonable retention… Continue reading Apple Mail deletes messages from Exchange hosted mailbox

Probably one of the most annoying things in my life is forgetting simple sequences. The following is one of my favorites and I decided to spare my (and hopefully somebody else’s) couple of minutes online research.   Symptoms: Despite the fact that Plantronics Pro is not only supported from but also marketed by Apple: http://store.apple.com/de/product/TW455ZM/B#compatibility… Continue reading How to reset a bluetooth connection to a headset from iPhone

Abstract: This document describes briefly the differences between the two technologies enabling multipathing I/O over iSCSI, shows the appropriate configuration location on Windows GUI and closes with a typical misunderstanding about aggregation prerequisites. The information in this article is based on the author’s experience and an information found in the documents "Microsoft iSCSI Initiator Version… Continue reading MPIO and MCS under Windows – Configuration in a Nutshell

  This article discusses briefly the hardware and software prerequisites and settings for a SAN deployment in Microsoft Hyper-V environment. The certain aspects described here include NIC, switch-port and SAN-interface configurations and considerations about jumbo frames, flow control, VLAN, MPIO and port trunking (bonding) / LACP. The information provided is abridged and rather serves the… Continue reading Configuring iSCSI SAN for Hyper-V: Network Optimization

  This article discusses briefly the LUN provisioning, deploying CSV and preparing for Live Migration in Microsoft Hyper-V environment. The prerequisites for a healthy iSCSI Fabric are not listed here, please refer to the document "Configuring iSCSI SAN for Hyper-V: Network Optimization" on this site. Software requirements For Server 2008 and above you will need… Continue reading Configuring iSCSI SAN for Hyper-V: Logical Volumes Provisioning

This article describes the steps required to achieve high availability for virtual machines using Cluster Shared Volume. In addition this scenario presumes that you are already using Hyper-V stand-alone and would like to migrate virtual machines already in use. To achieve this you either use SCVMM or you have to use the export / import… Continue reading How to migrate Virtual Machines to a CSV

  Symptoms: Windows updates pops up with the warning that Microsoft Core Services 4.0 Service Pack 2 updates repeatedly have to be installed. After a successful installation the pop-up windows starts again in a couple of minutes. Repetitive installation or new start does not solve the problem. Cause: The problem is caused by a false… Continue reading Microsoft Core Services 4.0 Service Pack 2 updates repeatedly

  Symptoms: Windows client does not show any new installable updates. After each restart and logon the computer CPU works at 50-90% for about 10 minutes. Under C:\windows\windowsupdates.log the last line include: 2009-02-27 17:13:48:934 1780 2b8 AU # WARNING: Search callback failed, result = 0x80244010 2009-02-27 17:13:48:934 1780 2b8 AU # WARNING: Failed to find… Continue reading Windows client cannot install new updates and the CPU is overloaded

  Symptoms:Your Latitude laptop cannot be shut down or restarted at all when on docking station model Standard E-Port Replicator. It shuts down without the docking station though. The typical behavioral pattern is as follows: you start the laptop with a mounted E-Port Replicator after that unmount/undock, then mount the laptop back again and try… Continue reading Dell Latitude E6400 Shutdown Problem

Symptoms: During boot process you press F12 to access DELL Diagnostics. You receive a message "DELL utility partition can’t be found"     Cause: This can happen if DELL’s hidden OEM partition has somehow become corrupt or is deleted or unavailable. For example if you replaced your HDD. Or if you reinstalled an OS, deleteing… Continue reading How to Recreate DELL Utility Partition