Partitioning Promise RAID after synchronization

If, in OS X Disk Utility, the raid set displays as one un-partitioned empty drive, then I can see no reason why Disk Utility would not work to preform the partitioning to your requirements; as there is no data on the raid set yet, give it a go - it's the ideal time to experiment 🙂

Also, in order to use the Promise software, it would have to have a feature which partitions the RAID set AFTER the set has been created. It may not have such a feature.

Message was edited by: SilverSkyRat

Did you ever partition the RAID drive on your Pegasus? I too am wondering whether to use Disc Utility which appears simple to use vs the Pegasus Promise Utility which offers a lot of information but I'm not finding it user friendly.

hello all

I have an easy solution to the issue after experiencing the same problem. I have the R4 with 4 x 1TB. Upgraded the drives to WD red pro 2TB x 4 but after going through the process using the promise software for initialising and expanding the raid...it still showed only 3TB usable. Note i had done a complete back up of all data across to a drobo for safety. All the data on the R4 was intact after the new disks were inserted but even trying the Apple disk utility... nada change. Tried rebooting everything - nada. Disk warrior failed. However, i have been using Drive Genius software as a background integrity checker for my main iMac for some time - It does a better job of permission fixes and a range of other stuff also then any original apple software - a great investment. Well, little did i know it also has a button to expand raid drive.. Initial check when clicking the button showed indeed, the R4 had 8TB available but only 3TB was being used. I simply keyed in 6TB into the box, clicked apply and Voila! job done, dusted, completo and problem nada anymore. Drive Genius - best hardware and software integrity checker on the market with a lot of the in built functions. And for the record....i also contacted Promise...they got back to me eventually in about a week with some convoluted method to simply give them some information about my system....thanks guys at promise....have a look at drive genius...these guys have got their Sh_T together!