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XSIBACKUP-DC does all things that XSIBACKUP-PRO is capable to do with another features or there's something that XSIBACKUP-PRO does and XSIBACKUP-DC don't?
Current (c)XSIBackup-DC version 220.127.116.11 is capable of doing everything Pro edition does much faster & much more efficiently, except one thing: (c)Onediff
(c)Onediff is an instant differential feature which is specially useful when having to backup huge VMs in a short period of time. It stores the changed blocks to a snapshot and that snapshot is sent to the remote end and integrated with the previously sent base data.
- Keeping a permanent snapshot can reduce performance, this isn't a big issue as per the current working figures hardware can achieve though.
- Onediff differential snapshot has to be integrated to the remote VM, thus, you need to keep a mirrored VM to be able to merge the differential data and that VM has to be compatible with the original VM, not only in terms of compatibility between HW versions, but also in regards to VMFS versions.
Until we finish to develop an instant differential feature for DC edition, which will be much better than (c)Onediff, we can offer Pro + DC at reduced prices, just contact us to get your deal.
is the --replica commancd a differential backup procedure?
Last edited by grhookgr (2020-10-30 12:54:09)
Yes, it is, same way as Rsync does. It has to traverse all bytes though to compare checksums, once (c)XSIBackup-DC knows which blocks have changed it sends just the changed data. You note this especially when backing up over a WAN link, as second run and subsequent ones take little more than over a LAN.
We need to differentiate between some instant differential features, such as CBT or Onediff which don't need to go through all the data cause they know on advance which blocks have changed.