shareVM- Share insights about using VM's

Simplify the use of virtualization in everyday life

Posts Tagged ‘rsync

Top 12 referrers over the past 3 months

leave a comment »

Top 10 Posts and Searches for Q4 2008

leave a comment »

Written by paule1s

January 8, 2009 at 10:08 am

scp, VSS for Windows VHD backup, disaster recovery

with 3 comments

How to replicate Hyper-V VHDs for DR?
The author is looking for a block-level transfer tool like rsync on Windows. A respondent has suggested using Volume Shadow Copy Services (VSS). However, VSS needs space for shadow copy data and this becomes an issue if you have large VM’s to transfer and are short of space.

scp is a secure transfer tool like rsync that is used for performing remote copies of files, including vhd mages across the LAN or the Internet.

Mircosoft recommends that customers can implement a backup or a disater recovery solution within their WAN using the File Replication Services (FRS2) of the Distributed File System (DFS) of Windows 2003 server R2, or later. This solution will perform well over the WAN, if WAN acceleration is in use. However, if WAN acceleration is not in use, then they should enable the Remote Differential Compression (RDC) protocol available in Windows 2003 Server R2, which Optimizes File Replication over Limited-Bandwidth Networks

Read about the use of rsync for vmdk, vhd backup and disaster recovery.

Written by paule1s

December 19, 2008 at 1:24 am

rsync vm, vhd for backup, disaster recovery, ec2

with 3 comments

I use ftp to transfer large VM image of my code to a remote development team based in India and rsync for copying and backing up code, configuration and data from ec2. I researched the web for best practices that have evolved for speeding up large VM transfers. It seems there are none today, unless you are transferring VM’s on your company’s WAN and they are using WAN accleration to improve the transfer rate. However, I have found two models for using rsync with vmdk’s and  vhd’s. Here’s a sample of use cases:

Cloud-centric usage

rsync is used for copying and backing up code, configuration and data from cloud-based services like Amazon ec2.

Traditional usage

rsync is used for backing up large VM’s to a remote store or for disaster recovery

Read about Backup, Disaster Recovery for Windows VM’s

Written by paule1s

December 19, 2008 at 1:01 am

Virtual Machine Disk Image Compression

with 2 comments

Experience with running out of storage

Background about sparse files, Windows NTFS and VHD

VHD Pre-Compactor & Compactor

When you create a new VM you can pre-allocate all the storage in one shot or let the storage grow on demand. In the latter case, the VM uses a sparse file

VMDK Wipe & Shrink

3rd Party (Not from MSFT & VMW)

Rsync: for transferring files between machines

Research

Compressing Virtual Images

leave a comment »

Experience with running out of storage

Background about sparse files, Windows NTFS and VHD

VHD Pre-Compactor & Compactor

When you create a new VM you can pre-allocate all the storage in one shot or let the storage grow on demand. In the latter case, the VM uses a sparse file

VMDK Wipe & Shrink

3rd Party (Not from MSFT & VMW)

Rsync: for transferring files between machines

Research