The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Proxmox’ Category

Some proxmox notes: adding a new logical volume from a new HDD

Posted by jpluimers on 2017/09/01

–jeroen

Posted in Power User, Proxmox, Virtualization | Leave a Comment »

Some links on converting non KVM VMs to Proxmox

Posted by jpluimers on 2016/10/24

Gut feeling indicates I need these someday:

From VHD to Proxmox you need to convert to RAW not IMG:

# qemu-img convert -f vpc -O raw PATH/to/DISK.vhd PATH/to/DISK.raw

–jeroen

Posted in Power User, Proxmox, Virtualization | Leave a Comment »

FileZilla on Windows is waaaay faster than WinSCP

Posted by jpluimers on 2016/10/21

Not sure why yet, but on a gigabit network between a Windows 2008 R2 Server and a Proxmox KVM machine, WinSCP gets around 10 megabit/second and FileZilla > 30 megabit/second.

Others seem to agree that filezilla faster than winscp.

–jeroen

Posted in Communications Development, Development, Internet protocol suite, Power User, Proxmox, SSH, TCP, Virtualization, VMware, Windows, Windows Server 2008, Windows Server 2008 R2 | 1 Comment »

SysInternals sdelete: zero wipe free space is called -z instead of -c

Posted by jpluimers on 2016/09/20

In the 2009 past, sdelete used the -c parameter to zero wipe clean a hard drive and -z would clean it with a random pattern.

That has changed. Somewhere along the lines, -c and -z has swapped meaning which I didn’t notice.

This resulted in many of my virtual machines image backups were a lot larger than they needed to be.

The reason is that now:

  • -c does a clean free space with a random DoD conformant pattern (which does not compress well)
  • -z writes zeros in the free space

Incidently, -c is a lot slower than -z as well.

TL;DR: use this command

sdelete -z C:

Where C: is the drive to zero clean the free space.

–jeroen

Posted in Batch-Files, Development, Fusion, Hyper-V, Power User, Proxmox, Scripting, sdelete, Software Development, SysInternals, View, VirtualBox, Virtualization, VMware, VMware ESXi, VMware Workstation, Windows | Leave a Comment »