Richard Chinn [MSFT]
Guest
|
 Posted:
Tue Nov 23, 2004 12:04 pm Post subject:
Re: Replication Process - Files are deleted during process |
|
|
There is no way to have FRS changes on a "master" always win over
changes on a "recipient." This is because FRS is a multi-master
replication system. This means that all machines are both "masters"
and "recipients."
As this is the case, FRS must perform conflict resolution to determine
when conflicting changes (the one you describe is a basic case of a
conflict) are detected. In general, FRS uses last writer wins
semantics, so this is why your last-written, blank file is overwriting
the original file.
If you are using your setup in a publication scenario (data is created
and modified on one machine, then sent out to other machines where
it's only read), you could have your second server share its data as
read-only. This would prevent an application from creating the blank
file on the machine that will win over the original.
--Richard
Please post FRS related questions to
microsoft.public.windows.server.dfs_frs and prefix the subject line
with "FRS:" to make it easier to spot. Note that FRS is used to
replicate SYSVOL on domain controllers and DFS root and link targets.
For additional FRS resources, please visit
http://www.microsoft.com/frs.
This posting is provided "AS IS" with no warranties, and confers no
rights.
On Mon, 22 Nov 2004 09:49:02 -0800, "JoeC"
<JoeC@discussions.microsoft.com> wrote:
| Quote: | We have noticed with FRS that when a file is replicated between two servers
(I will call the "FROM" location the "Master" and the "TO" location the
"Recipient") the File in the Master Location is retained throughout and the
one in the Recipient location is temporarily deleted before being updated.
Now depending on file size and WAN speed (2MB Leased line) the Recipient
location can be missing its file from some time.
Should a user go to access the file during this time the DB trying to locate
it at the Recipient location cannot and therefore creates and opens a new
blank file. thus effectively wiping the original!
Can FRS be set to leave the file being replicated in the Recipient location
until it needs to overwrite it hence the Recipient location is NEVER missing
the File?
Many thanks
JC |
|
|
FAQ
Memberlist
Register
Profile
Log in to check your private messages
Log in