|
Key
This line was removed.
This word was removed. This word was added.
This line was added.
|
Changes (2)
View Page History![](http://198.64.248.210:8090/images/icons/grey_arrow_right.gif)
* R1Soft CDP 3.0 - 200 - 300 KB on average per 100 GB of raw Disk Volume capacity
+Disk I/O overhead Caused by CDP CHhange Tracking+
* So small it's Not Measurable
* No Delay to I/O
* No Delay to I/O
![](http://198.64.248.210:8090/images/icons/grey_arrow_right.gif)
* Secure Random Key is Kept in Windows and Linux Kernel memory.
* Copy of this secure key is stored in the data repository with each synchronization.
* Copy of this secure key is stored in the data repository with each synchronization.
* At the start of each synchronization operation the key in the data repository is compared to they key in kernel memory. If the keys differ then there was a reboot or crash of the server and an integroity check is required to re-sync CDP.
+Re-Syncing CDP+
* Requires full block scan of Disk Volume and fails safe to checksum methods of computing Deltas since change tracking data structure is lost on reboot.
* Requires full block scan of Disk Volume and fails safe to checksum methods of computing Deltas since change tracking data structure is lost on reboot.
![](http://198.64.248.210:8090/images/icons/grey_arrow_right.gif)