Being able to write one copy of data local and asynchronously write it to a remote site sounds like a good extension to the VM Magic/ESA product. It might not be available for z/VM but it already has a good handle on intercepting a virtual machine's dasd i/o and doing something special with it. Adding a branch in that pipeline and a receptor at the remote site could be a fun project.
/Tom Kern --- Tom Duerbusch <[EMAIL PROTECTED]> wrote: > We have an IBM DS6800 and have looked into what it would take to mirror the > dasd, offsite somewhere. Not only does license fees come into play for the > DS6800, but communications, a remote box and site requirements. > > But, when it really comes down to it, in about a year, I only need to mirror > the DB2 log as in dual logging to two different disk packs. It started me to > think about options. > > What if we had one, remotely supported disk drive on our system? > What if one of our 3390-3 packs, and only one, could be mirrored to some > remote system? > > Obviously, large shops may just mirror the entire DS6800. But in the smaller > shops, perhaps there is a "black box" thingie out there, or perhaps a service > bureau that has a solution that may be workable. > > Right now, this is DB2/VSE. The log files are on VSAM. Not interested in > doing log archives every hour and sending the tape, over an IP connection. > > In the virtual tape world, there are many options. I don't know of any > options in the VSE dasd world. > > Being able to use a NAS device as CKD disk, would really be great. I've done > that with a P/390 to expand the emulated disk available. But the z/890 > doesn't support emulated disk, and besides, emulated disk sure had its > performance issues. > > Anyway, it can't hurt to ask... > > Tom Duerbusch > THD Consulting > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
