Host-based replication with end-to-end compression
US9575687B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2015 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Jun 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0673
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for enabling end-to-end compression when performing host-based replication (HBR) are provided. In one set of embodiments, a hypervisor running on a host system at a primary site can intercept I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM. The hypervisor can further track VMDK file blocks that are modified by the I/O write requests and can retrieve the VMDK file blocks from a storage tier at the primary site. The hypervisor can then compress the retrieved VMDK file blocks and transmit the compressed blocks to a secondary site.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.