XenServer is a wonderful tool. One of the better parts of it is its powerful scripting language, powered by the ‘xe’ command. In order to capture a mass of snapshots, you can either do it manually from the GUI, or scripted. The script supplied below will include shell functions to capture Quiesce snapshots, and it…
I have a nice SCSI tape connected to a single server. This allows for on-demand backups, with the hope (and seldom, with the established knowledge) that I can recover the data I have there. Old computers, decommissioned computers and systems I wish to erase and reuse are seldom backed-up, just because of the effort in…
Oracle begin to push their Clusterware as a 3rd party HA framework. In this article we will review a quick example of how to do it. I will refer to this post as a quick-guide, as this is by no means any full-scale guide. This article assumes you have installed Oracle Clusterware following one of…
ADS integration has been available natively since Windows 2003 R2, and in heterogeneous sites this has become the preferred method of integrating login information, as well as utilizing the added security of using Kerberos wherever possible. The following guide is a very good one, and was the source of information I have used throughout my…
ISPs which enforce QoS limitations suddenly, without alerting the customer, are abusing their force. QoS limitation is not a bad thing, from the ISP’s point of view, but changing the customer deal without notifying him seems to me to be unfair. This is a recipe for a QoS workaround. Ingredients: One fast Internet connection which…
A friend of mine made a grieve mistake – partition a disk containing Linux LVM directly on it, without any partition table. Oops. When dealing with multi-Tera sized disks, one gets to encounter limitations not known on smaller scales – the 2TB limitation. Normal partition table can contain only around 2TB mapping, meaning that to…
