Our C: drive on some of our Windows servers is only 8GB, is there anyway to dynamically update this? Its all locally attached storage.
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You need a partition resize tool. Examples include PartitionMagic, or the excellent gparted. The latter is a linux boot disc: boot, resize, sorted! Its also free, just remember to make a full backup just in case something goes wrong.
edit: as mentioned, Dynamic disks are a different matter for most resizing tools. If you want to resize a dynamic volume, you use the diskpart utility provided by Microsoft. This comes with Win2003. Please note that you cannot resize a dynamic volume if it was originally on a basic disk and was later upgraded to dynamic. Back everything up regardless before starting.
You're going to run into some issues if you are trying to resize a dynamic disk. There are some tools out there that will allow you to convert the dynamic disk to a basic disk to resize it, but I'd be pretty leery of trying it. take a look here: http://www.partition-tool.com/easeus-partition-manager/copy-dynamic-volume.htm
I recently used Acronis Disk Director Suite for that, works like a charm.
Windows 2000 introduce a new feature called dynamic disk. It allows, amongst other things, to dynamically resize a partition. You can even extend your partition on another disk.
This article provides some usefull informations.