locked
Exchange 2010 copy queue length? RRS feed

  • Question

    • Copy queue length (logs)   Indicates the number of log files waiting to be copied and inspected.
    • Replay queue length (logs)   Indicates the number of log files waiting to be replayed into this copy of the database.

    Basic question regarding copy queue length.

    So when I look at the copy queue length for a Server A?

    Are these the log files waiting to be copied by Server A so it can be send to Server B's replay queue?

    Please clarify.


    dsk

    Friday, April 27, 2012 4:34 PM

Answers

  • Logs ship from the active to passive copy.

    So from C to A. and from C to B.

     

    No logs are shipped during normal replication from one passive node to the other.

    If you see a copy Queue Length for the store on Server A, its referring to the logs its getting from the active store on Server C.

    • Proposed as answer by Terence Yu Monday, April 30, 2012 6:59 AM
    • Marked as answer by Terence Yu Thursday, May 3, 2012 9:01 AM
    Friday, April 27, 2012 5:47 PM

All replies

  • The number of logs waiting to be copied to the passive copy. So if Server A is active, the Server B would be passive for that particular DB.

    Sukh

    Friday, April 27, 2012 4:45 PM
    • Copy queue length (logs)   Indicates the number of log files waiting to be copied and inspected.
    • Replay queue length (logs)   Indicates the number of log files waiting to be replayed into this copy of the database.

    Basic question regarding copy queue length.

    So when I look at the copy queue length for a Server A?

    Are these the log files waiting to be copied by Server A so it can be send to Server B's replay queue?

    Please clarify.


    dsk

    If you see a copy queuelength for Server A, its the logs that need to be copied to Server A from a mounted database on another server.

    Only passive copies do log inspection. If you monitor the Last Inspected Log Time, it will slowly get closer to the actual time on the passive node as the logs are copied over and replayed.

    P.S. Its not by server of course, but by database.
    Friday, April 27, 2012 5:17 PM
  • But if Server A and Server B are both passive copies, then the copy queue for Server A represents log files which are being copied and inspected by Server A before being send to Server B's replay queue??

    dsk

    Friday, April 27, 2012 5:29 PM
  • But if Server A and Server B are both passive copies, then the copy queue for Server A represents log files which are being copied and inspected by Server A before being send to Server B's replay queue??

    dsk


    Well servers arent passive, only databases are. The copy queue length are the transaction logs the passive copy is getting from the active copy.
    Friday, April 27, 2012 5:31 PM
  • I was just using a short cut to describe the scenario.  Please note rephrasing of question.

    Server C has one active database called Exchange1.  Priority 1

    Server A has one passive database called Exchange1. Priority 2

    Server B has one Passive database called Exchange1. Priority 3

    If I am looking at the copy queue for Server A  these represent logs files inspected by Server A and copied by Server A so it can be send to whom?  Send to server B?


    dsk

    Friday, April 27, 2012 5:38 PM
  • Server C has one active database called Exchange1.  Priority 1

    Server A has one passive database called Exchange1. Priority 2

    Server B has one Passive database called Exchange1. Priority 3

    So are logs shipping from C to A then from A to B?

    Or are logs shipping from C to A and C to B?


    dsk

    Friday, April 27, 2012 5:41 PM
  • Logs ship from the active to passive copy.

    So from C to A. and from C to B.

     

    No logs are shipped during normal replication from one passive node to the other.

    If you see a copy Queue Length for the store on Server A, its referring to the logs its getting from the active store on Server C.

    • Proposed as answer by Terence Yu Monday, April 30, 2012 6:59 AM
    • Marked as answer by Terence Yu Thursday, May 3, 2012 9:01 AM
    Friday, April 27, 2012 5:47 PM
  • So log files in Server A copy queue will be inspected then copied to where?  Server B has already received logs from Server C.


    dsk


    • Edited by kimdav111 Friday, April 27, 2012 6:29 PM
    Friday, April 27, 2012 6:29 PM
  • ....then apply them to the passive store on Server A.

    Friday, April 27, 2012 6:38 PM