Hi Austin, ----- Original Message ----- > From: "Austin S. Hemmelgarn" > To: "Chris Miller" , "amanda-users" <amanda-users@amanda.org> > Sent: Friday, November 16, 2018 10:11:22 AM > Subject: Re: Flushing the Holding Disk
> On 2018-11-16 12:27, Chris Miller wrote: >> Hi Folks, >> >> I'm unclear on the timing of the flush from holding disk to vtape. >> Suppose I run two backup jobs,and each uses the holding disk. When will >> the second job start? Obviously, after the client has sent everything... >> Before the holding disk flush starts, or after the holding disk flush >> has completed? > Taping can (by default) run in parallel with dumping if you're using a > holding disk, which is generally a good thing, ... I am using a holding disk, so this means that only the collection from the client is serialized. This is good news, because I want to do all my collecting before I spool anything from holding disk to vtape. > Generically, set `autoflush no` in each configuration, and then run > `amflush` for each configuration once all the dumps are done. Perfect! That is exactly what I seek to accomplish! > > However, unless you've got an odd arrangement where every system > saturates the network link while actually dumping and you are sharing a > single link on the Amanda server for both dumping and taping, this > actually probably won't do anything for your performance. You can > easily configure amanda to flush backups from each DLE as soon as they > are done, and it will wait to exit until everything is actually flushed. I have everything on the same LAN segment, which is only 10/100. I must be sure that all my clients have reported before the next working day, but I can spool from holding disk during working hours, if necessary. I'm guessing that my network bandwidth is going to be my bottleneck, because I'm pretty sure that any old desktop machine can individually saturate a 10/100 link. If I backup more than one client at a time, I'm going to increase collisions and decrease throughput. So, I can cut backup time in half, if I hold everything and spool as the final step. Thanks for the help, Austin. -- Chris. V:916.974.0424 F:916.974.0428
