How to set up RAID in El Capitan

RAID0? It is good and faster than single disk, but if it crashes, bum deal. Don't recommend it for too long. And do back ups continually.

I do photography and will move to RAID5 as soon as I can. Three back up methods. Backblaze, TM, and CCC.

So for RAID1, would you type:

diskutil appleraid create mirror LaCieRAID1 JHFS+ disk0 disk4

or this:

diskutil createRAID mirror LaCieRAID1 JHFS+ disk1 disk2

It was a little contradictory reading:

https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/ man8/diskutil.8.html

Also, what is JHFS+?

thanks,

Which, is no solution when you manage your OSX server from your office, some 30 miles from the datacenter it's in.

Ron98GT wrote:

Also, what is JHFS+?

thanks,

That is the disk format: OS X Extended (Journaled). In the old days, the disk format used in the Mac was known as HFS (for Hyerarchical File System), then HFS+ when the extended version (introduced with System 8.1) came to be. Journaling was created later.

diskutil appleraid create mirror LaCieRAID1 JHFS+ disk0 disk4

or this:

diskutil createRAID mirror LaCieRAID1 JHFS+ disk1 disk2

createRAID was a synonym for appleRAID create, but it has been deprecated (will stop working in the future).

So, you should use appleRAID create if you are creating a tool or a script that you might use in the future.

El Capitan, ver:10.11.3, does not have that...

daniel.from.lanus wrote:

El Capitan, ver:10.11.3, does not have that...

Did you read carefully what Redcat7 wrote? He did it by using the network recovery mode.

Edit: I just tried it by booting with Command-Option-R and indeed I got the "old" Disk Utility.

It does work. I checked it once and it didn't show up. Great. So unfortunate to not include RAID5.

Thought something was odd. Shows up on MBP (2011) but not on new iMac (2015). : /

spinningstill wrote:

Thought something was odd. Shows up on MBP (2011) but not on new iMac (2015). : /

Just a guess: your iMac already came with El Capitan, right?

Yes. MBP is El Capitan as well. MBP was wiped and clean install of El Capitan.

spinningstill wrote:

Yes. MBP is El Capitan as well. MBP was wiped and clean install of El Capitan.

My point is that this MBP model was launched *before* El Capitan, whereas your iMac already came from the factory with El Capitan installed.

Yes, I figured thats what you meant. Thank you! Kind of odd though. Hope they bring it back. Still can use the terminal though, but not for 5.

Command-option-R takes you to whatever version of OS X was current at the time your machine was manufactured. So mine takes me back to Tiger. That doesn't really help me build a RAID for El Capitan.

SoftRAID claims to be able to do this and to be able to put a recovery partition on the disks but they don't say how to do it. I've asked on their support board but there has been no response so far.

Hopefully this will all be over soon. Sierra is supposed to bring back the RAID functionality to Disk Utility.