Drobo

Dual redundancy Question

For those who read my previous post, I transferred my data from one drobo to the new one and moved the old drives over once I was finished. It took almost two days for 1.5 TB of data, but worked like a champ. I used one on firewire (the drobo transmitting the data) and one on usb 2 (the receiving drobo). This was the fastest configuration between two usb 2 and two firewires. each of the other configuration transferred around 2 Megs per sec, while the usb 2 and firewire in my configuration clocked in at 14. The other way around only clocked in at 8.

Anyhow, for the question:
I just activated dual redundancy and it is saying approximately 16 hours to complete. Do I have to leave the drobo on or can I power it off to move the system (proper shutdown through dashboard)?

Trebuin’s previous post (for those like me who don’t remember)

You were smart to use two different buses for the transfer, rather than have them both share the same bus bandwidth.

I’ve never powered off my Drobo S, to be honest, but I suspect one of two things will happen:

  1. Drobo won’t actually power off until it’s done establishing dual-disk redundancy
  2. Drobo will power off and dual-disk redundancy will (continue to) be established when it’s powered up again
  3. The request to enable DDR will be canceled, Drobo will power off and dual-disk redundancy will be disabled when next powered on

Regardless, I would just shut down your computer and let Drobo do its thing. Once it has finished it’ll go to sleep.

[quote=“Trebuin, post:1, topic:7872”]Anyhow, for the question:
I just activated dual redundancy and it is saying approximately 16 hours to complete. Do I have to leave the drobo on or can I power it off to move the system (proper shutdown through dashboard)?
[/quote]

Not to point out this message, but I’m always shocked when I read things like this. “I just started some long, drawn out process with my data and I want to shut the machine down.”

There is probably 99.999% chance that you can shut to machine down and the drobo will turn itself off when it is done, but if it were me and my data, no way would I ever disrupt anything connected to that machine after starting such a process.

The DroboS will not respond to shutdown requests while it’s rebuilding. You can safely shut down the host computer and disconnect the data cable if needed, and the unit will continue rebuilding on it’s own. We really try not to interrupt rebuilds if at all possible because there’s always the chance that doing so can cause problems with the drive pack.

thats nice to hear.
i tend to agree with dpuett. before doing anything i’ll disconnect from the net/antivirus, and scheduled tasks etc, and then do the operation.

(maybe leaving a machine up and running where it “could” interact or try to interact with the unit is risky, but in my mind id rather not “rock the boat” while running :slight_smile: