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pre-sale technical questions

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Hi all,

We are looking for a vmware backup solution and are evaluating Acronis Backup for vmware. We have the following questions and wonder if someone or Acronis MVP can help us.

1- Is the backup done in incremental form? (First time full backup and next time is incremental) If so, is there a way to combine all (first backup and all incremental) into one file later (for storage managment)?

2- Is there a way to encrypt backup files for security?

3- How is backup done? Does it make any difference (for performance) on using FTP, Samba, localstore(actually remote vmware datastore via iSCSI or NFS)?

4- What is the Acronis recommended backup practice for vmware?

Thanks,
Douglas

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Posts: 22
Comments: 3800

Hi Douglas,

1. The backup can be done in incremental mode and for better storage utilization we have a special "always incremental" (aka "single file") archive format which allows keeping all recovery points (full and incremental ones) inside one file. The main benefit of this format is that it allows removing any recovery point (even the very first one) without affecting the other recovery points in the backup chain by removing only blocks which don't have dependencies. This means that the archive will not grow enormously and there is no need to run separate consolidation activity which combines a set of full+incremental recovery points into full ones. If you need to extract recovery points from the primary archive there is an option to set up 2nd destination in the backup settings which will copy the recovery points (all or just the last one) into a new archive. The detailed description of this archive format can be found here: http://www.acronis.com/en-us/support/documentation/AVMP9/index.html#150…

2. Yes we support AES-128, AES-196 and AES-256 encryption of the backup archives.

3. The backup is done using native vSphere VADP which allows 3 modes (selected automatically) of data access, i.e. when reading the virtual disks: hot-add, direct SAN access and network (NBD) - see details at http://www.acronis.com/en-us/support/documentation/AVMP9/index.html#148… . The backup location type in general doesn't matter for performance, but some of the advanced features like "Run VM from backup" (instantly start VM from backup archive without recovery) are available for archives located on local storages or SMB shares only since FTP protocol for example has limitations in random read access required for this functionality to run.

4. In terms of performance the fastest possible setup is to have a separate physical machine which has SAN LUNs used by vSphere attached to it. The same LUNs are used by ESXi host as VMs storage and the data can be read from them directly over SAN by backup agent installed on this physical machine. You will get comparable speed by using virtual appliance-based installation which allows backup in hot-add mode, where the virtual disks of the backed up VMs are attached to the virtual appliance and thus are read directly without using network. The backup storage in this case may be either local storage (separate new virtual disk attached to appliance) or networked folder (slower).

Hope this helps!

Thank you.
--
Best regards,
Vasily
Acronis Virtualization Program Manager