Re: StorEdge 3310, disk sets, 2 hosts

From: Anthony Mandic (am_at_*t.com.au)
Date: 09/26/04 

Date: Sun, 26 Sep 2004 22:02:59 +1000

noone wrote:

> > You should be seeing a theme here. Replicate the updates over the
> > network to the standby server while it's in recovery mode and have it
> > read in all the logs, or replicate the volume over the network. By
> > having each server use independent storage you don't have to worry about
> > importing and exporting volumes. You do have to make some decisions on
> > synchronous or asynchronous replication. i.e. does the commit happen
> > when both servers write the data or only when the primary server writes
> > it. Your risk is transactions that haven't been sent and the ones that
> > are in flight. It's all a matter of how much risk you want to take.
> >
>
> Yes I know .. we investigated the and evaluated Sybase Replication
> Server ( reading transations longs from one database to applying these
> transaction logs to another database ) to implement a warm-standby. It
> works well ... but the licensing cost is very prohibitive for a small
> company.

        There's also ASE Replicator, the "lite" version of Sybase Replication
        Server. This comes with ASE rather than as a separate product, so
        there's no additional fee. But its pretty much bare bones compared
        to Rep Server but it would probably meet your requirements. HA
        would probably be the better option.

-am © 2004

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