China 
Africa 
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Migration and Retiring Aging Systems
Published in Hubbert Smith, Data Center Storage, 2016
Migration projects fall into two very separate categories: File: Network attached storage (NAS), shared folders, anything using a file system such as New Technology File System (NTFS), Zettabyte File System (ZFS), or ext, accessed over a NAS protocol such as Network File System (NFS) or Common Internet File System (CIFS).NTFS (New Technology File System) is Microsoft’s NT file systemZFS (Zettabyte File System) is a Sun/Oracle-developed file systemNFS (Network File System) is a network attached storage protocol originally developed by Sun Microsystems to share filesCIFS (Common Internet File System) is a network attached storage protocol developed by Microsoft to share files, printers, and moreBlock: Databases, e-mail, SharePoint, and similar projects in which the application includes its own data structure instead of a file system.
A Container-Based Technique to Improve Virtual Machine Migration in Cloud Computing
Published in IETE Journal of Research, 2022
Aditya Bhardwaj, C. Rama Krishna
In this section, we describe the design of LXD/CR container migration technique. A hypervisor-based virtualization system causes a heavyweight solution because each virtual machine is configured with a separate OS instance. Therefore, a lightweight virtualization solution needs to provide sharing of the kernel. For this purpose, we modified the host's system Linux kernel and adopted Linux Container Hypervisor (LXD) as a lightweight virtualization technology [26]. LXD provides various administrative commands such as lxc-create, lxc-stop, lxc-info to accomplish the life cycle of a container. LXD container provides the capability of implementing all the processes in an isolated fashion. To facilitate the migration support for LXD container, we implemented checkpoint/restore mechanism of CRIU technique [27]. CRIU enables checkpointing the state of the running container at source server and later restored it at the target server. In addition, to eliminate synchronization overhead during the container migration, we implemented the Z File System (ZFS), because it uses copy-on-write (COW) mechanism to record only the changes that occur after the snapshot and transfer modified contents rather than entire container's file system. The remaining of this section elaborates on the detailed description for the LXD/CR technique.