On Tuesday 11 February 2020 18:47:23 Nathan Stratton Treadway wrote: > On Sun, Feb 09, 2020 at 05:47:46 -0500, Gene Heskett wrote: > > amcheck is again happy, and since a df now shows that now empty disk > > as haveing 896702760 1k blocks free, it ought to have all the room > > it needs, and I'm reasoning the original /usr/dumps holding disk can > > be commented out. > > > > However, since I'm also backing up 4 other machines whose "spindles" > > are out on the net and can and do run in-parallel, is the removal of > > the old default a good idea? That would, depending on the > > scheduling, have 5 dumpers writing to the same spindle again. > > I am not sure we can give a definitive answer to that question... > > Off hand I would suspect that the single disk drive is fast enough to > handle all the traffic as it comes in over the network, especially if > it's a decently modern drive attached via direct SATA link and you > have a reasonable amount of RAM available for buffering/caching. If > so, your total backup-run time would be about the same with just the > one drive. > > On the other hand, it's certainliy true that if you have two drives in > use for holding disk files then the total amount of drive-head > movement is reduced (since each drive doesn't have to move back and > fourth between as many different files), compared having just one > drive (assuming spinning-platter drives, obviously). So if you are > worried about your sdb drive's lifespan, it makes sense to keep > /usr/dumps in the mix. (On the other hand, if sdb is only used for > the holding disk while sda is important because it contains the active > root filesystem, you might want to push the extra wear onto sdb by > commenting out the /usr/dumps side.) > > > But without some specific unusual factor in your situation, I'd guess > that it from the drive hardware side of things it probably won't > matter in the end, and you should just go ahead and configure > whichever way seems easiest for you as system administrator.... > > Nathan
It still has both, took just over an hour for 72 dle's last night. I'll let it ride for a few to get an average, then comment it out just for grins. Let you know in 2 weeks. :) Thanks Nathan. > ---------------------------------------------------------------------- >------ Nathan Stratton Treadway - [email protected] - Mid-Atlantic > region Ray Ontko & Co. - Software consulting services - > http://www.ontko.com/ GPG Key: > http://www.ontko.com/~nathanst/gpg_key.txt ID: 1023D/ECFB6239 Key > fingerprint = 6AD8 485E 20B9 5C71 231C 0C32 15F3 ADCD ECFB 6239 Copyright 2019 by Maurice E. Heskett Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>
