Marcelo Lazarte

Yes you are right, there is a type in the script, it should be “$_.CounterSamples”, not “$_.CounterExamples”

Cheers
Reda DZ

If cleanup is necessary regardless of whether an exception is thrown or not, what is the advantage of using begin, process and end blocks instead of try, catch and finally blocks?

Whenever I have a need for something to be read only like this though, I’ll set set the permissions to read-only.

I think I see what you’re saying. If someone alters the destination file, it would be replaced by the source to restore the ‘corruption’.

I got the code you mentioned here “I also found a better folder browser dialog – Sapien Forums but I could not get it to run. to work. The issue is on line 122. The original looks like this:

for (int i = 1; i < names.Length; ++i) {
	type = type.GetNestedType(names, BindingFlags.NonPublic);
	}

it should be:

for (int i = 1; i < names.Length; ++i) {
	type = type.GetNestedType(names[i], BindingFlags.NonPublic);
	}

names is an array and it is missing the counter [i] in the code.

Can’t wait to read about Cobian–seems like it’s pretty neat!

It’s pretty simple actually. If your source is T:SUBDIR and destinations are 10.10.10.1VOLUME, 10.10.10.2VOLUME, 10.10.10.2VOLUME, then something like:[code]FOR %F IN (10.10.10.1VOLUME 10.10.10.2VOLUME 10.10.10.2VOLUME) DO START ROBOCOPY T:SUBDIR %FSUBDIR /MIR /COPY:ALL /R:3 /W:3[code]I would also recommend testing to make sure your command is correct by using echo:
[code]FOR %F IN (10.10.10.1VOLUME 10.10.10.2VOLUME 10.10.10.2VOLUME) DO ECHO START ROBOCOPY T:SUBDIR %FSUBDIR /MIR /COPY:ALL /R:3 /W:3[code]

Backup programs can also add their own additional point of failure though if a restore has to be done through the backup program. This is why I’ve stuck with straight file copies for backups.

you need to import the webadministration module first
run this command
import-module webadministration

How in the world is robocopy finding corruption and correcting it? afaik robocopy doesn’t have a built-in compare function.

tested and confirm, this script is no longer working – you must update parts of this with updated GUID’s to get it working again

A lot of sites have more details on the switches, but it is also hit and miss on how well it works depending on the source and destination.

For one backup operation I had to make a ‘fall’ and ‘spring’ set since when dst kicked in, robocopy would copy everything again and not just the changed files.

It might also be worth mentioning a few tricks for copying and comparison.

For copying from one source to multiple destinations, using the ‘start’ command in a ‘for’ loop can start the copies simultaneously and allow the 100% cache hit to effectively double the copy speed since the original is basically only being read once and written twice. I’ve used this for up to 4 destinations simultaneously and it works best with similar destinations. Even when the destinations are not similar and the individual robocopy sessions become ‘off sync’ from each other, the latency of hitting the disk usually brings them back into alignment because one of the sessions has a cache hit while the other is still going to disk.

For comparison, MS’s own windiff is a pretty good way to compare entire tree branches. However, if one needs to compare a single source to multiple destinations, winmerge does a better job since it has the ability to actually compare a single source to 2x destinations. And being a portable program that runs on the various windows platforms (just like windiff), it’s another handy tool that can check the work of a robocopy session for bit by bit accuracy.