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Re: Encrypted backup using sparse image - Issue



I would recommend a different approach.

For each server, install SuperDuper! Use SuperDuper to copy the contents of the server, while running on the server, to a sparse image you create. Each server "disk" then becomes a encrypted sparse image.

Then, when you want to update the image, run SuperDuper! in its "Smart Update" mode which simply moves in the changes (including deletes).

If the servers are clustered in some way, you may be able to script it such as:
On time trigger
Mount server storage disk from server
Mount approp encrypted image
Trigger SuperSuper! to smart update
On SD finish
Unmount image
Unmount server volume


If you want, you can do this all visually from a central system using iCal and triggering AppleScript apps to execute at the servers over the network. Each server then is controlled from the centralized calendar and performs its own backup leveraging multiple processors for multiple backups.

I did this on some fairly high profile web systems to insure that all mirrored systems were up to date. If one server died or was killed, one of the other 3 mirrors could take its place.

On Apr 19, 2008, at 0:44, "Ashwin Basagouda Patil" <email@hidden > wrote:

Dear Simon,

Let us see how it works, I am reworking on it. I suspect LACIE is causing
the problem, hence I am coping the data by simple SCP command.


I will say that if you know that your disk image is going to have to
contain lots of stuff, using a sparse image is probably not the right
way to go.

My intention is to have encrypted backup of my all the servers of the company and to keep in the safe bank locker. Hence I am trying to have encrypted and password protected "sparse image"

I created it by the command line

# cd  /Desktop/LACIE

# hdiutil create -size 400g -encryption -type SPARSE -fs HFS+ <FileName>

Thanks
Ashwin Patil




-----Original Message----- From: Simon Slavin <email@hidden> To: MacOS X Server List <> Date: Fri, 18 Apr 2008 12:53:00 +0100 Subject: Re: Encrypted backup using sparse image - Issue


On 18 Apr 2008, at 12:35pm, Ashwin Basagouda Patil wrote:
1. "Encrypted sparse image" is in the LACIE disk, mounted on the G5
server.
2. Mounted the image file by double clicking the "encrypted sparse
image"
on the same machine.
3. Then created the folder "xxx" inside the image mounted.[Not in
the LACIE]
4. Copied [By silver Keeper] the date around 300 GB from the NFS
mounted
drive on the same server.
5. Next I wanted to copy another 333 GB from one more NFS mounted
drive, by
creating another folder "yyy" inside the image mounted.

Here the point I got the error,

Just pasting in here from the original:

next when tried to create another folder "YYY" inside the mounted
image it
says error message "do not have permission" even it has full
permissions/ownwership.

and tried with repair the encrypted sparse
image" inside the LACIE. That after even it is failed mounts the
image if I
double click on the "encrypted sparse image".

So the sparse image was on an external hard disk attached to the client computer, not the server. Okay, I have no idea why you should have that problem. I wonder if Silver Keeper is causing the problem.

Delete the entire image file, and make a new one.  Copy a smaller
folder to it using the Finder, instead of your original XXX folder.
Then copy another small folder to it.  Same problem ?  If so, try it
with an unencrypted sparse image.  Then try it with a normal (not
sparse) image.

I will say that if you know that your disk image is going to have to
contain lots of stuff, using a sparse image is probably not the right
way to go. No reason why it should give you error messages but you'll
lose a lot of time and space. Better to create a normal read/write
image to start with. But I still have no idea what's causing your
problem.


Simon
--
Simon Slavin                               Fylde Building Room C11
Computing Development Officer              01524 65201 x 93569
Psychology Department
University of Lancaster


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References: 
 >Encrypted backup using sparse image - Issue (From: "Ashwin Basagouda Patil" <email@hidden>)
 >Re: Encrypted backup using sparse image - Issue (From: Simon Slavin <email@hidden>)
 >Re: Encrypted backup using sparse image - Issue (From: "Ashwin Basagouda Patil" <email@hidden>)
 >Re: Encrypted backup using sparse image - Issue (From: Simon Slavin <email@hidden>)
 >Re: Encrypted backup using sparse image - Issue (From: "Ashwin Basagouda Patil" <email@hidden>)



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