Re: Adding backup storage
On Sun, 6 Aug 2023 10:49:12 -0400
gene heskett <gheskett@shentel.net> wrote:
> On 8/5/23 17:27, Charles Curley wrote:
> [...]
> [...]
> >
> > The first thing I wonder is whether you are going to overload your
> > power supply by adding all these peripherals. Do the math.
> >
> There are no power hungry spinning rust drives left in this system.
> All 7 drives currently plugged in are SSD's or optical, much stingier
> with their power demands.
Those optical drives may pull quite a bit of power when powering up.
> >
> > I have a rather different setup: An SSD with all the usual
> > partitions, /home, /, /boot, etc. Then four 4TB hard drives. The
> > hard drives are set up as one RAID 5, with one spare drive. The
> > RAID device (md0) is encrypted. On top of that, one LVM physical
> > volume. Half of that is in one logical volume with an ext4 file
> > system, the rest so far unallocated.
> >
> > My amanda vtapes (virtual tapes) are on the RAID logical volume. I
> > also use rsnapshot to back up portions of the SSD every four hours
> > to the RAID's logical volume.
>
> How full are the SSD's? If my experience here with u-sd's is any
> guide, leaving them room to do their housekeeping keeps them healthy.
> My arm stuff can and has run a full desktop on an 8G, but that 8G
> lasts about 6 months, 16G makes that a year, and 64G essentially
> lasts forever if infant mortality isn't counted. YMMV of coarse.
Interesting.
I don't let partitions get over 90% full. Most are less than that. The
two hawk2021vg partitions and the two /dev/sda partitions are on the
SSD, hawk--vg--raid-crc2020 is on spinning rust.
root@hawk:~# df | grep '\(/dev/mapper\|/dev/sd\)'
/dev/mapper/hawk2021vg-hawk2021root 105G 68G 32G 69% /
/dev/mapper/hawk2021vg-hawk2021home 80G 60G 16G 80% /home
/dev/sda2 463M 124M 311M 29% /boot
/dev/sda1 489M 5.8M 484M 2% /boot/efi
/dev/mapper/hawk--vg--raid-crc2020 4.0T 3.3T 538G 86% /crc
/dev/sdg1 1.9G 327M 1.6G 18% /media/disk
/dev/mapper/offsite 4.1T 2.9T 974G 76%
/media/offsite root@hawk:~#
And similarly for others.
>
> Thanks Charles.
>
>
> Cheers, Gene Heskett.
--
Does anybody read signatures any more?
https://charlescurley.com
https://charlescurley.com/blog/
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