Currently Being ModeratedNov 19, 2012 5:16 PM (in response to nycretoucher)
I do not think you have any space to expand the Volume into unused space on the RAID set. I don't think you will have any additional unused space on the RAID set until you upgrade THREE drives and re-make the RAID set in a larger size.
You need to roll the data off to a backup (preferebaly two), swap in multiple comparable-sized larger drives, and re-make the RAID in a larger size.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
Currently Being ModeratedNov 29, 2012 7:38 PM (in response to nycretoucher)
Three problems with this:
1. My understanding is that the Apple RAID card doesn't support drives larger than 2.2TB in size.
2. RAID 5 requires all drives to be the same size in order for more space to be available, then the file system needs to be grown.
3. The odds of an unrecoverable read error in the course of rebuilding a 3TB consumer SATA hard drive is actually rather high. 1 bit error in 1E14 is the most typical URE published by hard drive manufacturers for consumer SATA, and that translates to 11.4 TB, that is ever 11.4.TB of read, 1 bit error is expected. In the event of an unrecoverable read error, the reconstruction is halted. And a 3 disk RAID 5 means you're reading 6TB of data to rebuild the 3rd drive. So your statistical chance of failure is in the vicinity of 50/50. Not good odds. Therefore you already need to consider RAID 6, or RAID 10 (or RAID 1 + linear which is growable by adding 2 disks of the same size at a time, which can be different sizes than the disks already in the linear array).