Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Thu, 2004-09-16 at 04:26, Lars Marowsky-Bree wrote: > On 2004-09-15T18:48:57, > Greg Freemyer <freemyer-ml at NorcrossGroup.com> said: > > > To do this I would want a Enterprise release that supports: > > > > * Fibre-Channel attached storage (HP's MSA1500 most likely) > > * More than 2 TB of storage > > * Snapshots (for making tape backups) > > * DRBD 0.7.x disk replication to a remote site (i.e. Internet VPN > > connected) > > > > Is the above feasible and is there a current release that supports all > > the above. My guess is that SLES 9.0 is my best chance. > > Hi Greg, let me chime in that indeed all of those features are met by > SLES9. Available with support and maintenance from a Novell reseller > near you! ;-) > > (The next update kernel will also bring it to the 0.7.4 drbd release.) > > A 64bit platform like the AMD64 or EM64T would also seem a good choice > with these amounts of data. > > Depending on the amount of data and the requirements for the > 'in-syncness' between the two copies, rsync might also work. drbd will > work of course, but will incur the latency of the link for the writes. > (I'm sure you are aware of this, but I wanted to mention it > nonetheless.) > > And, drbd "only" supports ~4TB per device, and at that size will > consume considerable amounts of memory for the bitmaps etc (I think it's > about 128MB of low memory). It will work, but if you want to optimize > this, LINBIT will gladly do the work for you ;-) Some consulting by > LINBIT will certainly also allow you to tune your system optimally... > </advertisement> > > > Sincerely, > Lars Marowsky-Brée <lmb at suse.de> Thanks Lars, I was hoping for your response. rsync is an option I had not considered, but it is a good one. One question about the 128MB of low memory. That is only on 32-bit platforms, right? I'm definately leaning towards 64-bit servers. Greg