Mac Mini Server HDD raid failure help

My server has been running for years, perfectly, most of the time. It is set up as a mirrored raid set.
I noted today that the second HDD is displaying a "failed" red flag in disk utility. I attempted to Rebuild and that failed.
In the FIRsT aid tab Verify returns errors. "This disk needs to be repaired using the Recovery HD..restart control r....etc."
There's my problem. No monitor or keyboard. I'm using screen sharing from an imac.
Is there a way to run the server reboot remotely?
Is it time to purchase a new server or simply replace the faulty drive?
Cheers
Gaz

Hi Chaz,
Is it time to purchase a new server or simply replace the faulty drive?
I think replace the faulty drive is thw answer.

Similar Messages

Mac Mini Server and RAID

Hello,
I have now the new mac Mini Server with LION.
All is already intalled but I would like to have a raid solution.
I looked here > https://discussions.apple.com/message/10819777#10819777
But it's Old and close, and there is no DVD in the Box.
I Know, I can download Lion & every softwares but I am not sure about the best way to do that.
First, I use a Big USB Key to use with Time Machine. Perhaps it will be better and fast to install than Apps with my internet connection. 2 - I have to use the disk application to format the 2 disks... Do I need to be in target mode with another mac ?
I read there is a problem after with time machine.. true ?
I am sure lot's of people want to use mac mini server with Raid disk.
Thank you for your help.
Jeff

Look at
https://discussions.apple.com/thread/3197548?start=0&tstart=0

Mac Mini Server with Raid 1

Hi,
Is it possible to set up a Mac Mini Server with Raid 1 using only another mac computer such as a mac book?

Yes- Colin Jeukens posted step by step instructions back a couple of months ago. Here it is again...
Out of the box the mini comes without Raid. You have two identical HDs of 500Gb.
I have just set it up as Raid1. You can't do this when you use the startup disk from the mini. And as you don't have a Superdrive ... you need to be creative. You need another Mac with Firewire.
Step 1: Start the Mini in Target Mode. Press the T during start. In a few seconds the firewire logo will appear on your screen.
Step 2: Go to your second Mac. Connect the firewire cable between second Mac and Mini.
Step 3: On the second Mac start the disc utility. The two identical drives on your mini will show. Create a new Raid set (mirrored = Raid 1). Include both drives. Confirm the warning that all data on the mini will be lost.
Step 4: Make sure your second Mac has CD/ DVD sharing option installed. This is tou use the superdrive to install OS X Server on the mini.
Step 5: Shutdown both Macs
Step 6: Start your second Mac in target mode. Make sure the firewire cable is still connected.
Step 7: Start the Mini with the option key pressed.
Step 8: Insert the OS X Server install disc in your second Mac.
Step 9: wait till the drive logo apears om the Mini. Continue the install. Will take about an hour.
Here is a link to the original post...
http://discussions.apple.com/thread.jspa?threadID=2213470&tstart=0

Windows 7 on mac mini server and raid 1

I just purchased a 2011 mac mini server with the hopes of installing windows 7 alongside lion. Then my goal was to have the two drives mirrored. I successfully mirrored the two drives using disk utility and then proceeded to install lion. This all went fine. Imagine my shock when I loaded up bootcamp to see an error message describing it's inability to install windows on a raided system. The thought hadn't even occured to me that this would be an issue.
I have searched through various forums and other places on the internet and haven't found a solution. I am curious if I can get anyone with any experience in this area. Is it possible to have mac and windows installed on a drive... and have that drive mirrored to the second drive... regardless of what os i'm booted into?
Thanks for your help guys

The GUI version of Disk Utility is very limited in what sort of RAID configurations you can create. It will only allow you to have a single partition on the disk and to make a RAID using that.
Boot Camp requires creating additional partitions on the disk and hence it complaining.
There is a commandline version of Disk Utility called diskutility (duh!). It has far more options available. Details for this command can be obtained by typing man diskutility in Terminal.app.
It appears that in theory you might be able to do the following.
Start off with both disks not setup for RAID
Use Boot Camp to create the Windows partition. Repeat this on each disk.
Then in Terminal.app manually convert the boot Mac partition to a RAID using diskutil appleraid enable
Then add the matching partition on the second drive to make it a working mirror using diskutil appleraid add
Then in Terminal.app manually create a RAID for the Windows partition using both drives and use FAT32 as the format using diskutil appleraid create
Then boot and run the Windows installer and tell it to erase the Windows partition as NTFS
I cannot gurantee the above will work and you should obviously have backups if needed. Another option would be to have the Mac partition covered by RAID but not the Windows partition, this would result in three volumes one Mac RAIDed volume, and two other non RAIDed volumes even though you have two physical disks.

VPN on a new Mac Mini Server setup! PLEASE HELP

I want to use my newly purchased Mac Mini Server as a VPN. I cannot find any solid information on how to set this up. Can anyone help me with a tutorial or even a link? thanks!!!

Have you enabled the service, set IP-range and set a shared secret?
Then you have to choose who (users) should be able to access VPN.

Mac Mini Server HDD is corrupt and ...

I was using Disc Utility Repair/Verify on Server HDD to fix issues with the drive and it gave me the following:
Volume Server HDD found corrupt and needs to be repaired. Reformat disc and restore back up files.
This is a Mac Mini model A1347. Every time I start the machine, it opens with the Disc Utility page with the options to use:
Disc Utility
Access the Internet for Help
Download a new version of the OSX
Restore from Time Machine
I have tried all of these options and when I try the suggested fix, it always results in an error preventing the fix. I have most of the files from the Server HDD saved, so if I have to reformat it, it isn't a big deal.
What is my best option?
Thanks
-Mike

IIIaass, I'm sure you are right, and it is something I need to keep an eye on.
I'm hopeful that it is up and running again, but skeptical about it at the same time because it seemed to come around after enough tries.
Though as a novice Mac user, it could be that I finally did everything right instead of haphazardly trying things?
In any event, I'll keep backing up my work and if I start to see anything crazy start up again, I'll know for sure. What should I be looking for prior to the Utilities window cycling over and over?
Thanks again.

How can I create RAID 1 on Mac mini server just now from box.

I bought my Mac mini server two days ago and decided that 1Tb + 1Tb HDD are very good for RAID 1 (mirroring).
Thinking - doing ... Open Disk Utility, try to change and create RAID. Nothing. Try to reinstall OS X - recovery part are on disk all time.
Does anybody can help me to create what I want and how to do this with minimum energy. Thanks a lot.

Start from an Internet Recovery which boots you into it's own Recovery Partition. From there use Disk Utility to put your 2 drives into RAID 1. Reinstall OS X from the Internet Recovery once you have done that and install everything else as you need to.
Be aware that RAID volumes do not have their own Recovery Partition so you will need to either have an external drive with an RP to boot into else you will need to use Internet Recovery each time (which is around a 650MB download).

RAID on Mac mini Server (2011 i7)

I just purchased a new Mac mini Server today (the base configuration 2011 Quad Core i7 with 4GB RAM and 2x 500GB 7200RPM magnetic hard disks) and wanted to share what I've learned about setting up RAID on the system.
First, as you may have heard, the Mac mini Server does not include any installation/reinstallation media (I was hoping for a USB reinstall key, but it seems that the new systems don't include these or optical discs; last year's Mac mini Server included handy reinstall DVDs even though the system didn't have an optical drive). Out of the box, the new Mac mini Server has Mac OS X Lion, the iLife suite, and the Mac OS X Lion Server tools pre-installed on one of the two 500GB internal drives; the other disk is formatted as a separate, second drive.
If this is the configuration you're looking for, you're good to go right out of the box. As an aside, this shipping configuration is ideal for using the second disk as a Time Machine drive. I would argue that Time Machine would be a better use of the second volume than a RAID 1 configuration, as Time Machine provides versioned backups and you don't incur the write performance penalty RAID 1 requires every time data is saved to the disk. I would further caution that, while an internal Time Machine disk is a convenient safety measure, any critical data should be backed up outside of the system as well.
Now for those like me who were intrigued by the opportunity to mate the Quad Core i7 with a RAID 0/striped configuration for a performance boost (or if you want to use RAID 1), a RAID configuration is possible, but it there are a few caveats.
First, Apple has two recovery options for the new Macs: a small hidden recovery partition on the boot drive and their Internet Recovery system. While it's possible to boot other systems from a Lion installation DVD extracted from the App Store Lion installer, such bootable optical discs will not boot the Mac mini Server at this time (this may change if Apple modifies the App Store Lion installer). Therefore, as of right now, the recovery partition or the Internet Recovery system are the best options for installing/reinstalling on a RAID set.
Second, if you boot the system using Command+R to access the recovery partition, you can wipe the two drives and create a RAID set, but this process will remove the recovery partition and is incompatible with FileVault encryption (a warning to this effect comes up when you try to start an install/reinstalll on a RAID set, but at that point, you've likely already erased the recovery partition in Disk Utility). If the system boots after the recovery partition is deleted, the only install/reinstall option is Apple's Internet Recovery.
Third, as might be expected depending upon your internet bandwidth, the Internet Recovery system can take a while to boot the recovery tools (10-15 minutes to boot on a standard cable modem connection) and to reinstall the OS (50+ minutes on a standard cable modem connection). Internet Recovery currently reinstalls only Mac OS X Lion and the Server tools on the mini Server; there's no option to install iLife during the OS install (Apple could always change this by updating their servers, and there is a Customize button on the installer, but it is greyed out and cannot be clicked at the present).
Fourth, once the OS is reinstalled, it's possible to reinstall the iLife applications by launching the App Store from within Mac OS and selecting Purchased. The store will indicate that the system is eligible to download the iLife apps and you can do so by agreeing to upload system-identifying information to Apple and signing in with your Apple ID.
I hope all this helps. Here's a more concise step-by-step of how to set up the system with RAID:
THINGS YOU NEED
A fast Internet connection for the mini
Patience
Hold Command+R on the keyboard at start up to boot from the system's recovery partition (if the recovery partition has been deleted, the system should start from Apple's Internet Recovery system; you may need to connect to WiFi if wired ethernet isn't available)
Once you get into the recovery utility, select Disk Utility and for each of the two hard drives:
highlight the drive
select the Partition tab
select 1 Partition from the Partition Layout pulldown menu
select Free Space from the Format pulldown menu
click Apply
After you've wiped both of the drives, highlight one of the disks and click the RAID tab, then create a RAID set (striped or mirrored, as you prefer)
Quit Disk Utility and from the main recovery utility menu select Reinstall Lion (from this point on, if you have any trouble, you can restart the mini from the Internet Recovery system and return to this point, but the recovery partition will be gone as long as you keep the RAID set)
After you install and configure Mac OS X Lion Server (which can take well over an hour to download and install), you should be able to reinstall the iLife applications by launching the App Store App and selecting Purchased, then logging in with your Apple ID and agreeing to send your system info to Apple to download the iLife Applications
If you're using the mini as a production server, I highly suggest setting up some local, external recovery tool, as you don't want to have system downtime protracted by having to wait for an Internet Recovery boot/reinstall. I would also beg Apple to consider this sort of scenario and to provide more supported methods for recovering and reinstalling from local media.
Best of luck to you all.

I found the basic principle on another forum thanks to a guy called 'e-whizz' and this what I did to make RAID 1 work on a mac mini server with LION server.
You can easily configure the second drive on a mac mini server for a Mirrored RAID 1 set with Lion Server without either reinstalling or erasing your existing setup.
The initial setup process takes about 30 minutes, though the rebuilding of the mirror disk will take several hours, depending on the amount of data you have on the drive. It took around 3 hours on a new mac mini server with lion server installed, nothing else configured.
Before you start, please ensure you have a current backup of the server. Getting the following commands wrong can render you server unusable.
What you need to use is the command line version of Disk Utility, diskutil.
Before you start, clone the hard drive. You can use SuperDuper (or similar, I have used SuperDuper) with copying all files onto a USB memory stick. If Lion is freshly installed, 8Gb will do. SuperDuper will create a bootable copy on the USB.
Boot the mac mini from the external USB. To do that, reboot and hold down the option key while restarting. You will see a window, select the USB drive to boot from.
Launch the terminal and type the following command:
diskutil list
This gives you a list of all the drives and partitions your system knows about.
You need to find the Server HD partition (the first disk) and the HD2 partitions (the second disk). These are the two main ~500GB drives. You will be using the disk IDENTIFIERs when issuing the diskutil commands. For a stock standard Mac Mini Server, the commands below are correct, but if you have previously changed the volume names, or repartitioned at any stage the disk identifiers and volume names may differ.
First enable RAID mirroring on existing Server HD volume. This will create a single disk, unpaired mirror, without affecting your data.
Using this syntax:
diskutil appleRAID enable mirror disktomirror
where disktomirror is your disk identifier for Server HD
On my mac mini server, Server HD was disk0s2, so I used this command:
diskutil appleRAID enable mirror disk0s2
You now need to run diskutil list again to see the disk identifier for the new RAID volume. The new RAID volume will be listed as disk# on its own at the bottom of the list.
On my mac mini server this was disk3 (disk 2 was the USB I booted from, disk 0 the first disk and disk 1 the second disk)
Next add the disk HD2 to the Server HD raid mirror volume (on my mac, as I said before, this is disk3) as a new member.
This step will erase disk HD2 and begin an auto repair of the Server HD.
Using this syntax:
diskutil appleRAID add member newdisk raidvolume
replacing newdisk and raidvolume with your particular disk identifiers
On my server this was:
diskutil appleRAID add member disk1s2 disk3
To follow the progress of rebuilding the mirror set, type
diskutil list
It will show you the progress in % of the rebuilding under status
Once finished, reboot and your RAID 1 is up and running and you have also a working backup on your USB (coz' that's where you booted from ;-)
After reboot you can check the status of your RAID with
diskutil appleRAID list
Both drives should show ONLINE under status, interestingly, the device node for the RAID changed on my mac mini server from disk3 to disk2
That's it

Help! Can't install SSD in my new Mac Mini Server (2012)

Previously I've purcahsed Mac Mini servers and removed one of the two drives, replacing it with an OWC SSD. The hardware change was not hard to do and resulted in incredibly good computers for my employees to use which allowed us to retire several old, slow and abandoned-by-Apple Mac Pros. There were no issues with reformatting the computers after they had SSDs put in.
Today I took delivery of a new Mac Mini server, and started to do the same thing, removing the top HDD and sliding in my SSD, since I have many of them around. Unfortunately, the OS would NOT let me format the disks separately or remove the RAID. The volumes (the original 1 TB that was inside and my 480GB SSD) were both colored red when I booted into Internet Restore mode and ran Disk Util, something I've never seen before, and all it would do was say "there was a problem with your disk, would you like to revert it to a working state?" which in this case means Disk Util forcing my drives back into a RAID whether I want them that way or not. (At one point it fused my SSD and the 1TB drive into a single logical drive that had the correct size but didn't show separate sections, and couldn't be de-RAIDED at all, even when I connected to another computer with the Mac Mini in Firewire target mode.)
I gave up and put a 240 SSD in the lower bay, resulting in a 760GB RAID of two mismatched SSD sizes, which isn't what I wanted but I guess it will do. So far it seems to be working.
My question is, why in the heck is Apple forcing me to run my computers as a RAID and/or not letting me break the system into one hard drive and one RAID, which is what I want? (Having the backup disk right inside the computer is very handy.) Is this some feature to keep us from "making our own" Fusion drives? If Apple is deciding we can't hack or do anything interesting with Mac Minis, this will the last one I purchase, and I'm sure there will be others who do the same.
Since replacing one HDD with an SDD is likely to be the most popular mode imaginable for Mac Minis, can anyone tell me if they got a similar setup to work, and if so what did you do? Can you post the steps here for others who will be in this situation?

I'm not sure how or what is different between the Standard 2012 Mac Mini and the 2012 Server...? However it looks like your Server also uses Fusion like or similar to the regular Mac Mini's.
"The version of Disk Utility that comes with Fusion Drive is unique. Earlier versions of Disk Utility can't be used with a Fusion Drive."
Have a look at > Mac mini (Late 2012) and iMac (Late 2012): About Fusion Drive
and > Special Note for Adding an SSD to a 2012 Mac mini. | Other World Computing Blog

Mac Mini Server RAID 1 Disc Problem

I tried configuring my new Mac Mini Server (with the help of my MacBook Pro's superdrive) in RAID 1 as outlined in previous discussions by:
Step 1: Start the Mini in Target Mode. Press the T during start. In a few seconds the firewire logo will appear on your screen.
Step 2: Go to your second Mac. Connect the firewire cable between second Mac and Mini.
Step 3: On the second Mac start the disc utility. The two identical drives on your mini will show. Create a new Raid set (mirrored = Raid 1). Include both drives. Confirm the warning that all data on the mini will be lost.
Step 4: Make sure your second Mac has CD/ DVD sharing option installed. This is to use the superdrive to install OS X Server on the mini.
Step 5: Shutdown both Macs
Step 6: Start your second Mac in target mode. Make sure the firewire cable is still connected.
Step 7: Start the Mini with the option key pressed.
Step 8: Insert the OS X Server install disc in your second Mac.
Step 9: wait till the drive logo apears om the Mini. Continue the install. Will take about an hour.
But when I get to Step 9 the mini's drive logo does not appear. I tried reformatting the mini's drives again in Disc Utility but still the same outcome. What did I do wrong? How can I fix it?
Thanks!!

Never mind, was able to do the install with the Remote Install Mac OS X utility.

Time capsule 2TB,connected to mac mini server leopard, LG DP1W mediacenter/player for watching movies on my tv from my harddisk tower connected to time capsule by usb/hub on G-technologie 8 TB G-SPEED Q RAID-oplossing(hard disk tower) is this gonna work??

hello,
ik have a question about the hardware i wanna buy
i have a IMAC that is 3 years old and running on leopard snow 10.5, i want to upgrade the software from this mac to 10.6 and put 4GB workmemory into it, i have now 1GB.
I have ordered a MAC MINI SERVER leopard snow 10.6(also ordered a dvd superdrive, wireless typing, and a wireless mouse for the mac mini)
i have ordered a Time Capsule 2TB
i want to connect to the Time capsule this:
G-technologie 8 TB G-SPEED Q RAID-oplossing (hdtower)
UPC of EAN nr.: 705487185744 in the mac store
i want to connect to the Time Capsule this for my TV to play movies from the harddisktower connected to my time capsule:
LG DP1W MEDIAPLAYER/CENTER without harddisk build into it, with WiFi connection butt, i'm gonna use te 2.0 USB connection that is faster and stabile.
-Connecting the Time Capsule to the Internet
i'm also gonna use this: gear4 PG467 UNITY REMOTE(control everything with iphone)
i'm also want to connect by 2.0 USB my canon all in one foto printer, WiFi is not working properly and i have many times problems with connection my printer wireless.....
And for the future i also want to connect a Dymo Labelprinter by 2.0 USB
in total 7 usb connections: only the time capsule have one port, so i can split to more ports by a usb-hub????
Well i have another question: i want to store a movie database on the external harddisktower that is connected to the time capsule.....
How can... let me say: my sister, and father who live on 2 different adresses get access to the movie database and watch them at their own home?????
can i secure it with a password given to my sister or father that is only works for 1 file???? so that i get multiple passwords
how does this works??? to share/upload/download to the internet only to one person????
i hope someone can help me????

hello,
ik have a question about the hardware i wanna buy
i have a IMAC that is 3 years old and running on leopard snow 10.5, i want to upgrade the software from this mac to 10.6 and put 4GB workmemory into it, i have now 1GB.
I have ordered a MAC MINI SERVER leopard snow 10.6(also ordered a dvd superdrive, wireless typing, and a wireless mouse for the mac mini)
i have ordered a Time Capsule 2TB
i want to connect to the Time capsule this:
G-technologie 8 TB G-SPEED Q RAID-oplossing (hdtower)
UPC of EAN nr.: 705487185744 in the mac store
i want to connect to the Time Capsule this for my TV to play movies from the harddisktower connected to my time capsule:
LG DP1W MEDIAPLAYER/CENTER without harddisk build into it, with WiFi connection butt, i'm gonna use te 2.0 USB connection that is faster and stabile.
-Connecting the Time Capsule to the Internet
i'm also gonna use this: gear4 PG467 UNITY REMOTE(control everything with iphone)
i'm also want to connect by 2.0 USB my canon all in one foto printer, WiFi is not working properly and i have many times problems with connection my printer wireless.....
And for the future i also want to connect a Dymo Labelprinter by 2.0 USB
in total 7 usb connections: only the time capsule have one port, so i can split to more ports by a usb-hub????
Well i have another question: i want to store a movie database on the external harddisktower that is connected to the time capsule.....
How can... let me say: my sister, and father who live on 2 different adresses get access to the movie database and watch them at their own home?????
can i secure it with a password given to my sister or father that is only works for 1 file???? so that i get multiple passwords
how does this works??? to share/upload/download to the internet only to one person????
i hope someone can help me????

What is "best practice" to set up and configure a Mac Mini server with dual 1 TB drives, using RAID 1?

I have been handed a new, out of the box, Mac Mini server. Has two 1 TB drives in it. Contractor suggested RAID 1 for the set up. I have done some research
and found out that in creating the software RAID, this takes away the recovery partition, so I have been reading up on how to create a recovery "disk" using a thumb drive. this part of the operation I am comfortable with, but there are other issues/concerns that I have.
Basically, what is the "best practice" to setup the Mini, configure the RAID and then start the server. I am assuming the steps would be something like this:
1) start up the Mini and run through the normal Maverick setup/config - keep it plain and vanilla
2) grab a copy of the Server app and store it offline in a safe place
3) perform the RAID configuration / reinstall of OS X Maverick using the recovery tools
4) copy down and start the server app
This might be considered a very simplified version of this article (http://support.apple.com/kb/HT4886 - Mac mini server (Late 2012 and Mid 2011): How to install OS X Server on a software RAID volume), with the biggest difference being I grab a copy of the Server App off of the mini before I reinstall, since I did not purchase it from the App store, but rather it came with the mini.
Is there a best practice / how-to tutorial somewhere that I can follow/learn from? Am I on the right track or headed for a train wreck?
thanks in advance

I think this article will answer your question. Hope this helps: http://wisebyte.blogspot.com/2014/01/best-configuration-for-mac-mini-server.html

Help! Can't reinstall Lion Server on Mac Mini Server

To me, the perfect computer is a Mac Mini server (the current model) with one of the HDDs replaced with an SSD. I did this with two Mac Minis three months ago and it went perfectly.
Well. I bought a third Mac Mini and have attempted to do the following:
Carefully opened the case, removed the top parts and memory.
Removed the top 500 GB HDD
Replaced it with a OCZ Vertex 3 SATA III 2.5" SSD
Booted from a SD Card with the recovery system on it
Formatted both SSD and the other HDD, ensured they have the GUID boot block needed for Apple booting
What happened was...a total let down. It would start to download Mac OS Lion Server then tell me, "Could not find instalation information for this machine. Contact Applecare." If I went and re-formatted the SSD and tried it again, often it would go past this section, actually starting the download, but then I'd get "Can't download the additional components needed to install OS X."
I verified all connections were solid. Putting the original HDD back caused the machine to boot fine and let me set up Lion Server for use (oddly, even though I'd formatted one of the two RAID drives, but whatever). I am doing the exact same thing I did before successfully, only with an OCZ drive this time instead of Other World Computing. Either Mac Minis hate working with OCZ SSDs, or I made some mistake somehow (I'm pretty sure I didn't), or else Apple has flipped a switch forbidding software restoring of Mac Minis that have been "altered" from factory state. If so this will be a huge problem for Apple. I will make sure the major Apple blogs hear of this, if this is the case.
Can anyone suggest what else I can try to get this to install? If I can get a spare OCZ SSD so it's exactly the same as my previous successes. Otherwise I don't know what else to try.
(I guess cloning the system from one of the Mac Minis that works would be a possibility, though I want to solve this.)

Found that the second hard drive is broken. I have to go to the apple store to have it replaced.
I had to press the power button to turn the server off for several times, then the broken hard drive went disappeared. After that, I had to disable the Spotlight. Then the server went back to work normally.
Now I made a CCC copy of the primary hard drive, and would like to have the server run on the external raid disk (connected through thunderbolt). Does anyone have previous experience with it? Any expectable drawback or issue with this setup?

Help With MAC Mini Server and New SSD

Hey Guys,
I just got a Mac Mini Server. I swapped out one HD for a new SSD. A Crucial One.
I am booting in recovery mode and it only sees one HD and says it is 1.5 TB, (1 tb regular and the new SSD is 512)
I just want to run osx on the SDD .. help

I'm unsure of the proper procedure as I'm not experienced dealing with Fusion Drive setups. If Disk Utility shows you have a 1.5 TB drive, then what do you see when you boot the computer and check disk drive space using Get Info? I know you can revert the volume you have back to standard format if you don't mind using the Terminal in your Utilities folder:
Open the Terminal and paste or enter the following at the prompt:
diskutil list
Press RETURN. This will list for you the device information for your HDD. Here is an example of the output:
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *120.0 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                  Apple_HFS Yosemite                119.2 GB   disk1s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3
You want what you see at the top left - /dev/diskn, where n is the integer number. Then enter or paste at the prompt:
sudo diskutil cs revert /dev/diskn ; replace the n with the integer number found above.
Press RETURN and enter your admin password when prompted. It will not echo to the screen, so be careful typing. Press RETURN again. Wait until it completes the process which is when the prompt returns.
Given the potential danger when using the Terminal in this way, please be sure you have first made a reliable backup. Better safe than sorry.

HELP! Mac Mini Server Journaling issue during reinstall

H E L P !
Mac Mini Server Journaling issue...
Hi there,
I have taken on a nearly new Mac Mini Server running Snow Leopard.
It has a RAID set up already.
When I try to reinstall the OS from the original disk the installation willl not let me select the drive as it says it is not journaled.
I have then opened Disk Utility and selected the main HD (there is one HD plus 2 Raid slices listed).
From this point on there are no options available:
The only 2 tabs above the right hand window are 'First Aid' and 'RAID'.
First Aid shows all 4 options greyed out.
Selecting the main HD and then going to File>Enable Journaling will not work as 'Enable Journaling' is greyed out.
Deleting the RAID does not work either, as the HD (mirrored RAID set) and both RAID sclices have the padlock icon next to them.
Can anyone help?
I really need to reinstall the OS and set the machine up with a TimeMachine Capsule asap!
Many thanks,
Haberdashery

Sorted!
All is good now : )

Mac Mini Server HDD raid failure help

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