On Friday 12 November 2021 04:58:34 Olivier wrote: > Gene Heskett <[email protected]> writes: > > I should probably point out that ALL my problems with bad crc's of > > the holding disk files went away when I replaced the holding disk, > > which was apparently an SMR disk, with an SSD of 1/4 the size of the > > spinning rust disk. And my backup times to get all 6 machines were > > sped up from around two hours to under 30 minutes. All by the > > non-SMR, SSD holding disk. So at the very least, I can sure > > recommend an SSD as a holding disk. > > My 2 cents about using SSD for holding disk: over 15 years of running > amanda on hard disks, the only disk problem I ever had was with the > holding disk and the disk did get damaged in the holding disk area. It > seems that the holding disk function puts a tremendous usage on the > disk (especially with compression on the server I presume) to the > point of damaging a hard disk. I am wondering how an SSD will cope. > Since the holding disk is empty at the end of a given run that had no errors, a hard drive will get beat up on the same area near the start of the disk. The SSD has 23+ hours to look things over and if needed, shuffle the data areas used all over its array. All while its essentially empty. Only 62k of 240 gigs is shown as used right now, and thats just the ext4 overheard. Its empty now since thats all it does. It will be a long time before the wear leveler can't find enough good sectors to do a backup. Since I'm 87, I expect it to outlast me.
> Best regards, > > Olivier Copyright 2021 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, 1940) 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>
