Does anyone have an opinion as to what the cost of storage should be (say in $ /Gbyte) to enable wider use of 'direct to disk' backup? Would tape emulation help in this issue? ---------- > From: Jeff Layton <laytonjb@bellsouth.net> > To: linux-lvm@sistina.com > Subject: Re: [linux-lvm] Backup costs (was: LVM reimplementationre) > Date: Thursday, 7 February 2002 13:04 > > James Mello wrote: > > > > Large amounts of data brings in even more issues. How do > > > you stream Petabytes of data to tape in a resonable of time? > > > Unless you spend HUGE amounts of money to buy multiple > > > silos to handle slices of the data and put in a fantastic network > > > to handle the traffic, you can't backup in a reasonable amount > > > of time. In this case, disk is your only choice. The data size > > > break point between disk and tape depends on lots of things, > > > but that point is moving downward all the time (perhaps in > > > the Terabyte range). > > > > Petabytes are another matter entirely. If you must absolutely have that > > much data backed up, you start looking at more exotic solutions. Backing > > up solely to disk is *way* to expensive, hence the wonderful, but of > > poorly implemented idea of HSM.... Disk and tape :) > > Yes, HSM has never panned out the way it was supposed to. > However, try backing up Petabytes with tape in a reasonable > amount of time. While I've never configure such a system, > the numbers from systems I have seen indicate that disk is > much cheaper than tape (even if tape is a feasible solution > because of speed). > > Jeff > > > > > > -- Cheers > > -- James > > > > _______________________________________________ > > linux-lvm mailing list > > linux-lvm@sistina.com > > http://lists.sistina.com/mailman/listinfo/linux-lvm > > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html