Offloading Speeds on Mac Pro with mTape to LTO-6..

[Simon Blackledge]

So if I attach a usb3 1tb drive to another port on newmacpro and copy 1TB from the 8050 to it the 8050 would in theory overheat?

Or is this just streaming to tape using Bru? Archiware has a sw buffer that fills then streams. Is Bru similar?

Wouldn’t say Areca are cheap compared to Highpoint.

[Tim Jones]

Nope – that copy operation still uses the filesystem caching and scatter-gather that I discussed earlier. So that we can demonstrate that it’s not BRU, try this:
cd /Volumes/1st_Areca_Array
sudo tar -cvf - | (cd /Volumes/2nd_Areca_Array ; tar -xf -)
Give it 20 minutes or so and – Boom!

Tim
—
Tim Jones
CTO – TOLIS Group, Inc.
https://www.tolisgroup.com
BRU … because it’s the RESTORE that matters!

[Simon Blackledge]

Can I use a usb drive as 2nd volume using that command?

All one command?

Will it hose the areca or just need a restart?

[Tim Jones]

It shouldn’t hose the Areca, but may as it can actually gray-screen the Mac.

Make sure that the secondary drive is fast enough to handle the output of the original array, otherwise, the read speed will be reduced enough to invalidate the test. I would recommend an SSD via TB or at least a 2 drive stripe USB-3 array.

Tim
—
Tim Jones
CTO – TOLIS Group, Inc.
https://www.tolisgroup.com
BRU … because it’s the RESTORE that matters!

[Simon Blackledge]

Are MAXX DIGITAL aware of this ? I think their 8 bats are Areca also :-/

s

[Tim Jones]

Not sure – I’ll ping Devon.

Tim
—
Tim Jones
CTO – TOLIS Group, Inc.
https://www.tolisgroup.com
BRU … because it’s the RESTORE that matters!