i have 2 dc - dcserver0.local, dcserver1.local and 2 site - 44 and 5v. Both server works good.
Before a demote dcserver3.local, dcserver.local and dcserver2.local, but i always receive error with replication.
How to delete unused USN?
C:\Windows\system32>repadmin /showutdvec dcserver1 dc=my,dc=corp
Caching GUIDs.
..
44\DCSERVER\0ADEL:a6920fad-1696-49cb-9302-b14e88e8e2d4 (deleted DS
A) @ USN 2269804 @ Time 2012-05-02 19:42:32
39e5c0ab-cc21-4d59-870c-39b86e86d8b3 @ USN 1970324 @ Time 2012-04-07 10:46:04
5V\DCSERVER0 @ USN 444871 @ Time 2012-10-26 20:29:08
44\DCSERVER1 @ USN 1735771 @ Time 2012-10-26 20:34:02
78776fae-4e22-49ec-82af-917ad0ea79e9 @ USN 639063 @ Time 2012-01-17 00:15:47
5V\DCSERVER3\0ADEL:6e61da86-bb3e-48b9-9bae-ceea8ade5e81 (deleted DSA) @ USN 1209832 @ Time 2012-04-17 19:20:01
44\DCSERVER2\0ADEL:330c3fa9-1bb1-4299-a6af-f0188d1cf3f0 (deleted DSA) @ USN 1640050 @ Time 2012-04-17 19:22:59
f3e13a0e-d513-4c1f-a639-2a8011118c24 @ USN 611343 @ Time 2012-01-12 07:03:56