All right. Here goes:
I bought two Seagate Barracuda Green 2TB 64MB 5900RPM internal hard drives and a Rosewill R2-JBOD Aluminum 3.5" USB 2.0 DUAL-BAY External Enclosure from Newegg to use in a RAID 1 mirror setup to use as a photo storage system. I set them up in RAID using OS X Disk Utility (27" iMac running Lion). At first everything was fine. A few days later, I get an error message in Disk Utility saying that one slice (drive) of the RAID setup had failed and so the RAID was degraded. After ejecting/remounting etc that error went away and it said it was online and I could copy more files to it. Odd.
A couple of days later I noticed the lost+found folder, and now when I turn on the drives, I get the error message pop up that says "This disk cannot be read by this computer" with options to Initialize, Ignore, or Eject. Initialize doesn't seem to do anything. However, in Disk Utility, it says the RAID is "online."
What should I do? Do you think it's a drive error since I got the message saying that one slice was messed up before, even though now it says it's fine? (Verify/repair never showed any errors on any thing.) Or is the software RAID part messed up?
Ugh. This is really important--photos are my livelihood.
Terminal sez:
AppleRAID sets (1 found)
===============================================================================
Name: MEGADUMP
Unique ID: 4BA80F16-F7C8-43C1-A3E8-C7893672C8D3
Type: Mirror
Status: Online
Size: 2.0 TB (2000054910976 Bytes)
Rebuild: manual
Device Node: disk5
-------------------------------------------------------------------------------
# DevNode UUID Status Size
-------------------------------------------------------------------------------
0 disk3s2 8DF2008A-8B5A-457F-9C3C-DFF387EF798B Online 2000054910976
1 disk4s2 EC2DD19F-8D3C-452A-AD6A-1778EDAE5E8C Online 2000054910976
It says everything is online, but when I turn on the drive it says it can't be used.
I bought two Seagate Barracuda Green 2TB 64MB 5900RPM internal hard drives and a Rosewill R2-JBOD Aluminum 3.5" USB 2.0 DUAL-BAY External Enclosure from Newegg to use in a RAID 1 mirror setup to use as a photo storage system. I set them up in RAID using OS X Disk Utility (27" iMac running Lion). At first everything was fine. A few days later, I get an error message in Disk Utility saying that one slice (drive) of the RAID setup had failed and so the RAID was degraded. After ejecting/remounting etc that error went away and it said it was online and I could copy more files to it. Odd.
A couple of days later I noticed the lost+found folder, and now when I turn on the drives, I get the error message pop up that says "This disk cannot be read by this computer" with options to Initialize, Ignore, or Eject. Initialize doesn't seem to do anything. However, in Disk Utility, it says the RAID is "online."
What should I do? Do you think it's a drive error since I got the message saying that one slice was messed up before, even though now it says it's fine? (Verify/repair never showed any errors on any thing.) Or is the software RAID part messed up?
Ugh. This is really important--photos are my livelihood.
Terminal sez:
AppleRAID sets (1 found)
===============================================================================
Name: MEGADUMP
Unique ID: 4BA80F16-F7C8-43C1-A3E8-C7893672C8D3
Type: Mirror
Status: Online
Size: 2.0 TB (2000054910976 Bytes)
Rebuild: manual
Device Node: disk5
-------------------------------------------------------------------------------
# DevNode UUID Status Size
-------------------------------------------------------------------------------
0 disk3s2 8DF2008A-8B5A-457F-9C3C-DFF387EF798B Online 2000054910976
1 disk4s2 EC2DD19F-8D3C-452A-AD6A-1778EDAE5E8C Online 2000054910976
It says everything is online, but when I turn on the drive it says it can't be used.
Last edited: