Am Freitag, 15. November 2024, 06:53:53 Mitteleuropäische Normalzeit schrieb Dale: > Rich Freeman wrote: > > On Thu, Nov 14, 2024 at 6:10 PM Dale <rdalek1...@gmail.com> wrote: > >> The biggest downside to the large drives available now, even if SMART > >> tells you a drive is failing, you likely won't have time to copy the > >> data over to a new drive before it fails. On a 18TB drive, using > >> pvmove, it can take a long time to move data. > >> […] > > I think I did some math on this once. I'm not positive on this and it > could vary depending on system ability of moving data. I think about > 8TB is as large as you want if you get a 24 hour notice from SMART and > see that notice fairly quickly to act on. Anything beyond that and you > may not have enough time to move data, if the data is even good still.
I have 6 TB drives in my NAS, good ol’ WD Reds from before SMR time. When I scrub them, i.e. read the whole of their data out sequentially at 80 % capacity (so effectively around 5 TB), it takes 10½ hours. Looks like your math adds up. Maybe 10 or even 12 TB would also still work in that time window. Recently I switched from ZFS’s Raid6 to Raid5 because of said 80 % occupancy and I needed more space, but had neither any free slots left nor wanted to buy new hardware. Fingers crossed … > >> I don't even want to think what it would cost to put > >> all my 100TBs or so on SSD or NVME drives. WOW!!! > > > > # kubectl rook-ceph ceph osd df class ssd > > ID CLASS WEIGHT REWEIGHT SIZE RAW USE DATA OMAP > > META AVAIL %USE VAR PGS STATUS > > > > 8 ssd 6.98630 1.00000 7.0 TiB 1.7 TiB 1.7 TiB 63 MiB 3.9 > > > > GiB 5.3 TiB 24.66 1.04 179 up > > […] > > I do wish there was a easy way to make columns work when we copy and > paste into email. :/ For special cases like this I think we wouldn’t mind using HTML mail. Or simply disable automatic wrapping and use long lines of text for the entire message. The client can then decide where to wrap. I know it’s like a religious debate whether to wrap at <80 columns (please don’t start one here), but there is actually an automatism for this: if you end the line with a space, you can still wrap you text statically at <80 columns, but the space tells the client that it may wrap here or not. I forgot the name of it though, I learned about it in the mutt user group. For me it’s easier: as I use vim in mutt. I usually let it do the wrapping for me (including the mechanism I described). But I can disable wrapping on-the- fly, so I can paste longer terminal output. > Dale > > :-) :-) -- Grüße | Greetings | Salut | Qapla’ Feet are fat, lumpy hands with short, stubby fingers.
