Re: Adding backup storage
On 8/5/23 17:27, Charles Curley wrote:
On Sat, 5 Aug 2023 15:03:54 -0400
gene heskett <gheskett@shentel.net> wrote:
I've an asus mobo with 6 sata ports, 5 are busy.
I also have another 6 port with 4 ports tied up serving a raid 10 for
/home. That leaves 2 ports empty on that controller.
I have a handful of 2T SSD's. If I can find another 4 pin empty
pigtail on the psu, I'll plug 2 of these 2T's into that aux
controller,
What doc should I follow to bring these 2 drives into one volume
managed partition for amanda's use as a vtape device? I'd assume the
volume management works by now, but it was a data losing disaster 15+
years ago when I last tried it.
I could, since amanda is quite versatile, set it up as two separate
vtape drives. So I'm open to a pro/con discussion. Thanks all.
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.
To answer your question, I would use LVM to combine the two new physical
drives into one volume group, build logical volumes to suit, then
encrypt on top of that, then put an ext4 file system on each of those.
If you are only going to put vtapes on the two new drives, I'd go for
one logical partition and leave it at that.
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.
Thanks Charles.
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/>
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