- Pegasus2 R4 Promise Utility For Mac Rebuild Raid Command
- Promise Raid Utility Mac
- Pegasus2 R4 Promise Utility For Mac Rebuild Raiders
May 05, 2014 Symptoms: The Pegasus is showing no problems; WebPAM or Promise Utility gives all green checkmarks, Disk Utility will show 'Promise RAID' volume as mounted and it will pass verify disk, but Finder still doesn't see the volume. You might be able to browse to your external volume directly at the Terminal command prompt, or with the Finder option. In a few hours the Pegasus will totally rebuild that blown drives information. This of course happens while the drive array is STILL IN USE, which is great for a network or a computer that must be running at all times. The Pegasus arrives formatted and configured in a RAID 5 array, but you may change that to RAID 1, 2, 6, or 10 if you wish. In Mac OS Catalina I find that the Promise Utility does not operate completely correctly, i.e. Failing to save a Subsystem Service Report after clicking on Save, and I find that after rebooting into OS Catalina, the Pegasus 3 runs for about 3-5 minutes each time apparently doing some sort of maintenance operation.
It is over 1200 days since Apple launched the 'Can't innovate anymore my ass' Mac Pro. Over the last 24 hours, there has been widespread reporting of Apple's decision to end the life of the cylinder and reinvent the Mac Pro. The bad news is the new model won't be available this year. The Rise and Fall of the Cylindrical Mac Pro. How to Rebuild a failed HDD in Disk Array.
We have a client that does quite a bit of production work. They have a very robust Promise RAID setup (2 x R4 and 1x R6) with over 30TBs of storage. We recently ran into an issue with the drives in the R6 showing up as Dead/Offline. After some back and forth with Promise tech support and conducting our own research we found a rather simple solution. I wanted to document our solution in an effort to save you some time if you encounter this issue.
After a rather serious Florida Summertime storm all the drives on an R6 were showing up offline. Being that this was setup as a RAID 5 this posed some potential data loss. Thankfully, this RAID was the clients versioned backup so worse case we replace the drives and reclone from the working RAID. I still found it highly suspect that 6 drives would have failed so I ran a subsystem report and sent it off to Promise's tech support. Within an hour I receive a response recommending that we upgrade the firmware and see if that resolves the issue. We proceeded to upgrade the firmware on the R6 by doing the following:
Pegasus2 R4 Promise Utility For Mac Rebuild Raid Command
Click on Promise utility on the Menu Bar -> Check for updates. - It would prompt for updating the firmware, update the firmware. - After the update, click on subsystem information on the Promise Utility window -> Shutdown/Reboot. - Choose reboot & restart the unit.
After the unit rebooted the drives were still showing offline. I then started to do a bit more research and come to find out that others have experienced the logical drive of the Promise RAID going offline after abruptly losing power. The issue was resolved by forcing the drives back online. Unfortunately, the option to force the drives online isn't available through the Promise Utility GUI but has to be done via the Terminal application. See below for instructions on forcing the drives back online.
On the Mac, open the Terminal app and run:
This will open the Promise Utility. Now type the following:
Promise Raid Utility Mac
If you have the R6 you will need to add the following commands in order to force drives 5 & 6 online -
Pegasus2 R4 Promise Utility For Mac Rebuild Raiders
After you force the drives online reboot the RAID and you should be good to go.