Re: drive controller Q?
On 9/15/22 03:04, David Christensen wrote:
On 9/14/22 20:06, gene heskett wrote:
On 9/14/22 19:50, David Christensen wrote:
On 9/14/22 11:40, gene heskett wrote:
Greetings all;
Does anyone have experience with this controller card?
https://www.newegg.com/p/14G-04YB-00003?Item=9SIB2XHHUE3880
Specifically, whats my chances of moving an existing software
raid10's 4 Samsung 1T's to it,
and then attaching 4 more 2T drives to it too, to create a separate
4T raid-10 for amanda?
Backup the contents of the 4 @ 1 TB RAID before making any changes;
just in case.
Unforch, until I get another raid-10 going, I have nothing big enough
to back it up to.
228G currently used.
I currently have 1 extra 1T Samsung and an empty sata socket though.
Please confirm that you are using Linux md for software RAID.
yes.
As others have mentioned, a PCIe 2.0 1x connection (500 MB/s) may
become a bottleneck for intensive RAID operations, such as copying
the 4 @ 1 TB RAID10 to the 4 @ 2 TB RAID10, scrubbing a RAID,
replacing/ resilvering RAID drives, etc.. I expect Amanda will be
limited by HDD seek time and/or Gigabit Ethernet, not by PCIe 2.0 1x
bandwidth.
That would probably bother me eventually. Amanda would need 5 drives,
cuz it uses a
dedicated holding disk and completes the DLE to it, before moving the
completed DLE
to the vtape. A decided advantage in terms of preventing a real tape
from being shoe
shined to death, but relatively unimportant in this case. I had
amanda backing up my
whole local network until those two seagates puked and choked to
death on it. But with
3d printers, I now have added 2 rock64's and killed one old Dell with
a lightning strike since.
That disk can co-exist on the mobo's ports. And has, its still there
in fact. Unmounted, sdb.
Shows up in a blkid scan.
Let me acquire the drives and we can continue this later.
Thanks David
Cheers, Gene Heskett.
Lightning strikes getting into residential electrical systems is
extremely dangerous. I suggest that you address that first -- upgrade
to a grounded electrical system if you have an ungrounded electrical
system, install lightning arresters, etc., at the electrical service
entrance, use surge suppressors between electrical receptacles and
equipment, etc.. Most importantly -- stay away from electrical
equipment during a lightning storm; watch for fires!
You are preaching to the choir. I am a Certified Electronics Technician.
4 @ 1 TB HDD RAID10 seems like overkill for 228 GB of backup data.
I'm just getting re-started. Before the seagate experiment killed
everything, my typical
nightly backup was over 40 Gigs on a 14 day dumpcycle.
Rather than buying four 2 TB HDD's, I would buy three mobile racks:
https://www.startech.com/en-us/hdd/drw150satbk
I already have a 4 bay version of that, half full of SSD's now at 2 per
3.5" bay.
Install the extra 1 TB HDD into the first mobile rack tray and install
the bay in the server. Now it is easy to backup (or restore) Amanda,
or whatever.
I would then convert the 4 @ 1 TB HDD RAID10 into a 2 @ 1 TB HDD
RAID1, and put the other two 1 TB HDD's into mobile rack trays. Now
you can have three backups of your backups in rotation. This will
provide good protection against crashed drives, lightning, etc..
I redid the service in 2008, brought it all up to NEC specs, but the
computer and the monitor were
plugged into two different circuits. Jury rigged, fixed now.
David
.
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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