Bruce, At Time splits with Shadowimage and/or TrueCopy use Timestamps to initiate the split and create consistency. There is no blockade of writes for "a few seconds" while all the volumes are split.
Ron > > With normal backups, and even with normal "instant replication", I/O > consistency cannot be guaranteed. However, EMC, HDS, and now IBM have > mechanisms for guaranteeing I/O consistency when you use "instant > replication" on a set of volumes. In all cases it involves a way of > suspending I/O to all the volumes involved until the replication is > complete (a few seconds). > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
