Proper removal of disk while degraded RAID

Hi folks,
I have a XServe G4 with 4 drives, 2 are mirrored to the next ones, so System and Data are mirrored. One of the drives doesn't work any more and the RAID is degraded. What it the proper way of solving this issue?
Server Monitor says that faulting drive is Drive 3 in an Internal Bay 3 but when I remove it, (the third drive from left), the volume unmounts and users doesn't have an access to their data.
When I remove Drive 4 (the first from right side), the volume doesn't unmount, but the whole server freezes. Is it normal?

I was able to pop in the drives, boot off install DVD, and mark them as on-line. The server came right back up.

Similar Messages

Virtual RAID Array Migration to Windows Server 2012 R2 Disk offline, Degraded, Detached and split

My Residential server is used as a file and web server, however i also use it for learning so it has grown slow over the last couple of years, i now need to get it working ready for when i go to UNI. I have upgraded from windows server 2012 Standard to windows
server 2012r2 standard, i am on the same server, but have put a SSD as my primary drive(so i still have the old hard drive and can go back to that to get my data)
I have also done a BIOS update, so the logical disks (a 2TB RAID 1 with all my important documents) are not showing up on the RAID Configuration in the BIOS.
By changing settings i have managed to get the array to show up on server manager > File and storage services>Volumes>Storage Pools. however there are a number of exclamation marks shown next to the drive(s)
I read in a Technet
Article that i should "set
the storage pool to read-write "
I did this and then in the storage pool box at the top the exclamation mark says "Warning: Degraded".
In the Virtual Disks box (bottom left) the exclamation mark says "Unknown: Detached" and in the Physical Disks box (bottom right) it says "Warning Split" on the second disk.
I have disconnected all other Hard drives, however if i can't get my documents back will have to go back to windows server 2012. Any ideas would be greatly appreciated.
Michael Booth

Hi,
It seems that the second disk is failed, you need to add a new disk to the storage pool to replace the failed disk.
Degraded Storage Spaces Storage Pool after single HDD failure
http://social.technet.microsoft.com/Forums/en-US/3a7e2a7d-4ad7-48cc-8165-0d6673e37436/degraded-storage-spaces-storage-pool-after-single-hdd-failure?forum=winserveressentials
Regards,
Mandy
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Degraded RAID, trying to repair integrity

We pulled a major bonehead move.
We were installing another server in the rack and we didn't have the xServe locked. Me and my employee both popped drives from our xserve at the same time and we degraded the RAID.
Setup: Dual G5 xServe, MegaRaid card, 3x300GB drives in RAID 5
I supressed the urge to immediately panic, especially since the server was idle when it got hosed. I powered down right away and booted of the install cd.
I used megaraid CLI utility to re-flag the drives as optimal and brought the server right back up.
I'm noticing some odd behavior and a bit of corruption, so I assume the RAID consistency is blown, I pretty much expected that to be the case.
The problem is, our backups are crap. I've been fighting with the administration for funding for a proper backup system for nearly a year and I've failed so far. Formatting and a bare-metal restore from tape is not an option.
I'm running: megaraid -chkcon 0 -start
.. and it's taking forever according to -status. The documentation is very lacking about what the parameters actually do so I'm in a bind. I can run the consistency check and have the server down for at least a day but what do I get at the end?
Can or does chkcon repair consistency problems?
Here's my options as far as I know, suggestions?
- Is there a way to repair the consistency of a degraded RAID volume?
- Should I backup what I can and scrub the RAID and then just restore what I can from current data and old crappy backups?
- Sould I try degrading, intentionally, the drives that went off line one at a time then using the megaraid utility to properly return them to online with a megaraid -rebuild pd (pd being physical drive)?
- Should I try the official suggestions for moving RAIDs from server to server? Apparently Apple suggests that you can move a RAID by pulling the drives, moving the card without drives, then booting to install disk and doing megaraid -destroyconfig, then shutdown, then put drives back in, then let card magically rebuild raid from meta. This sounds like trouble to me.
Any suggestions (other than don't leave my xServe unlocked.. especially when working in the rack)?
thanks,
Steven.

I was able to pop in the drives, boot off install DVD, and mark them as on-line. The server came right back up.

Upgrading Controllers firmware on a degraded RAID 5 array

Hi guys
I have been told that upgrading the controllers firmware on a degraded raid array can cause a loss of configuration. I have been doing this for over 1 year and it has never happened, it sounds more like a myth to me that anything else but i would like some advice on it, if possible.
Is it true that the RAID Configuration can be lost by upgrading the RAID Controller? In theory isnt the RAID configuration kept on the hard drives?
Thanks in advance,
Pedro

No - this is not a myth. It is entirely possible to lose access to the storage either temporarily or permanently.
It is extremely bad practice to upgrade any system with a degraded component no matter how small.
Which particular array have you been upgrading?
In most arrays, the configuration is saved on multiple disks - on some arrays as a n-way mirror where n is the number of disks in the tray. However unless you know exactly what the implications are, it is extremely important that firmware updates are not carried out on degraded arrays.

Degraded raid 1 SATAS

Everything has been working great on my 939 fx-53, 2 gig Corsair XMS 3200Pro, 2 SATA Seagate 160s, raid 1, BFG 6800 Ultra until I accidently screwed with the bus speeds (I'm a complete moron) which locked up the system and shut down COM ports. Machine wouldn't boot, etc.
I finally loaded failsafe bios settings and utimately got everything straightned out but while bios was in this mode it defaulted to booting from my mirrored drive and Windows loaded (slowly) apparently for the first time, even telling me I had only several days left to registar it.
After resetting everything, including the raid 1, everything works fine except it is showing both hard drives as "degraded" even though using the Nvidia utility it shows them each to be healthy but mirroring as degraded. At F10 hitting R to rebuild does nothing but they appear to still be mirroring though I'm still getting the red flashing warning on boot that this mirrored drive is degraded.
Now when booting my PC takes FOREVER to boot and shutdown but otherwise seems to run fine.
How can I "re-mirror" these drives?
Thank you for any help!

One of the things that I did when I was building my system is to figure out how to do this.
What you need to do is to delete one of the degraded drives. What happened is that at one point in time, the PC booted with only one drive active which put the two drives out of sync. Now there are two active drives and the system does not know which one is supposed to be the "master". So by deleting one, you force the remaining one to be the master and the other will be mirrored off of it.
When you boot, hit F10 to go into the raid setup. Delete the degraded raid that you do not want. Then Ctrl-X and reboot. I am not sure if you have to assign the deleted drive back to the raid configuration or not. But if you can, go ahead and do so. Make sure that first drive is designated as the "boot" drive. Then continue to re-boot and the drives should start the mirroring process.
I hope this helps.

Need help with RAID Card and degraded Raid-5 errors

Dear all,
I recently purchased a used Apple RAID card for my 2008 Mac Pro 8-Core. The installation went smooth, the card was immediately recognized and the battery reconditioned within one night.
So I started setting up a Raid Set with the 4 identical drives which I already used before as a software Raid. But each time the Raid Level-5 Volume is created, somewhat later the status turns red and the Raid is listed as "degraded"!
A closer look at log reveals:
+19:42:54 Drive carrier 00:01 inserted+
+19:42:27 Background task aborted: Task=Init,Scope=DRVGRP,Group=RS1+
+19:42:27 Degraded RAID set RS1 - No spare available for rebuild+
+19:42:26 Degraded RAID set RS1+
+19:42:22 Drive carrier 00:01 removed+
+15:10:57 Created volume “R1V1” on RAID set “RS1”+
So it seems that the drive from Bay 1 somehow gets lost (removed) a few hours after the volume is being created and anysoon later it's being "reinserted"...
Of course, the drive is NOT removed, nobody touched the Mac Pro! Also I did the same procedure 3 times and the result was always the same.
I also tried setting up JBOD and different RAID levels which do all work without a problem. Only when choosing RAID5 (what I intentionally bought the card for), the problem reappears
Anyone any solution or hint for me concerning this problem? Many thanks in advance!

One drive completely broke down later. Replaced that drive and since the problem's gone!

Remove all disks for offline storage

Hello
I was wondering if I can remove all disks (4 in RAID10) to have an offline storage. If I remove all RAID disks and replaced them with new ones, I have to configure the RAID again?And after that, if I remove the second set of disks and replace them the first set of disk retired, can I go to access the original data? Thank You

chanolio wrote:
Hello
I was wondering if I can remove all disks (4 in RAID10) to have an offline storage. If I remove all RAID disks and replaced them with new ones, I have to configure the RAID again?And after that, if I remove the second set of disks and replace them the first set of disk retired, can I go to access the original data? Thank YouFirst all, why would you want to do that? Yes, when insert 4 new disks, you will need to reconfigure your RAID. If you decide to put the 4 old disks back in. Your nas will ask if you want to enable the RAID 10 roaming. Just click OK or Accept, then you will able to access your original data again.

XServe Degraded RAID Array

Hello
I have 2 XServe Dual Core servers experincing the same issue.
On initial setup I used 2-500gb modules to create a mirrored drive. Then installed the OS plus the applications that I am running. After a day or so the RAIDS were degraded. I formatted the the degraded drive and the rebuilt the mirror. Upon restart the raid was degraded again. I replaced the drive and the same issue again. I originally thought it was bad hardware on one machine but I am experiencing the same issue on both. Have not only reformatted but have replaced with 3 different drives on BOTH XServes. I even tried removing the Apple drives and replacing them with Seagate 500gb SATA drives off the shelf here without any luck.
Any ideas???
Thanks in advance

Thanks for the Welcome.
I haven't tried the anything with RAM but I will..
The odd part is that it is happening on 2 different machines. I initially created the RAID. Then installed the OS. Then installed my server apps. Everything seemed fine for a few days and then a degraded drive. After a few rebuilds and recreating the RAID. I formated the drives and used the Zero all data option. Rebooted the server and didn't launch any applications just let the serevr run and after one day the raid was degraded. I lso get a degraded RAID if I shut down the server and power it back up.
What I will do today is try installing just the factory RAM in both servers. Format the drives and recreate the RAIDS and see what happens.
I installed 16gb of crucial RAM into one server. And 4gb of Crucial RAM into the other.
I will let you know

Degraded Raid Repair

How can i repair a degraded raid?
All the instruction i have read seem to require a damaged disk, but my disks are OK...
Name: Data Mirrored
Unique ID: Data Mirrored2e749102dd1e11d8822a000d939c63fc
Type: Mirror
Status: Degraded
Device Node: disk3
# Device Node Status
0 disk2 OK
1 disk1 OK
xserve Mac OS X (10.3.8)

Hi
I have seen this before, dont have an answer why but i can help you fix it.
You need someone to look at the front of the Xserve, notice which drive is active and whcih one is not (blue lights flashing) after you have determined which drive is not being used then just pop it out of the bay, wait a minute or so then pop it back in
Once inserted you will be able to run the disutil repairmirror ....... command to rebuild the RAID
Be very SURE which drive is not being used before doing this.
Ed

Disk Utility / diskutil RAID Mirror rebuild fails: mistakenly thinks disk is too small

Has anyone else had this issue?
I've just migrated my Lion Server install to a slightly upgraded Mac Mini running Mavericks and am running into horrible trouble rebuilding my Apple RAID disk, which I established on Lion and would like to repair using Mavericks. The drives being used are the same units; the RAID got out of sync due to a power outage, and rather than wait to migrate until the old machine was done rebuilding the array like a week later, I just figured I could repair the RAID after migration.
Not so, however. Disk Utility, when I attempt to rebuild the raid using the second drive, tells me that it is too small.
When I look in diskutil, here's what it shows me:
<blockquote>
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk2
   1:                        EFI EFI                     314.6 MB   disk2s1
   2:         Apple_RAID_Offline                         3.0 TB     disk2s2
   3:                 Apple_Boot Boot OS X               134.2 MB   disk2s3
/dev/disk3
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk3
   1:                        EFI                         209.7 MB   disk3s1
   2:                 Apple_RAID                         3.0 TB     disk3s2
   3:                 Apple_Boot Boot OS X               134.2 MB   disk3s3</blockquote>
Notice that the EFI partition on disk3 -- the intact RAID slice -- is the correct size, 209.7MB or 200MiB. The EFI partition disk2, however, which was created moments earlier by Disk Utility in its failed attempt to rebuild the array, is 100MiB too many. As a result, the Apple_RAID partition is about 100MiB smaller than the one on disk2. Hence, this error.
So my question is: what the **** is going on here, and what can I do about it? Is this just a Mavericks bug, that it creates EFI partitions of the wrong size? The disks are seen as identical in diskutil. Is there anything I can do to rebuild my array?
I've considered rebuilding it on the old server, but then next time it gets messed up I'm just going to run into the same problem, as whichever slice fails will have a correctly-sized EFI partiton, and if Disk Utility insists on creating an incorrectly-sized one during the rebuild process it's just going to fail again.
Please halp! Thank you!

OK, so here is the solution for my problem
what i did was the following:
- as i wrote before, i erased the disk with command line (diskutil zeroDisk disk1), then the pending sector was gone.
- i decided to rebuild the raid in recovery mode to prevent further system crashes. so i added the previously zeroed disk1 to the degraded raid. when disk utility finished adding the disk it stalled but showed the raid ONLINE. so i decided to hard shutdown my mac mini - because it wasn't possible to restart via the interface of the recovery mode.
after staring the mac the system loaded and everything was working again properly! including disk utility still showing raid1 online.
btw, time machine was working correctly again when i deleted the .inprogress-file on the backup-disk.
maybe someone else is able to use this information - that would be great!

Failed Disk Utility Software Raid

My external RAID hasn't been mounting as easily as normal so I opened Disk Utility to repair disk or whatnot and it shows one drive as failed. Not sure what this means or how I should proceed. I'd be surprised if that drive is dead. What does the Rebuild button do? I have backed up all the data on the mirror, but am not sure how to proceed. I'd like to keep this info on the RAID if possible.
Dual2 G5 & Powerbook G4 Mac OS X (10.4.4)

From Disk Utility's Help:
A disk in a RAID set has failed or is missing
Disk Utility monitors the status of the disks in a RAID set. If you see a message that a disk is missing or has failed, there are several things you can try to solve the problem.
If a disk is missing, make sure it is connected to power and turned on, and that it's connected to your computer. If you are using a FireWire or USB disk, you may need to disconnect it then connect it again.
Use the First Aid pane to repair the disks in the RAID, then check the RAID set to see if it still reports an error. You may need to unmount the RAID set to repair the disks.
In some cases, you might need to quit and reopen Disk Utility or restart your computer and then check the RAID set.
If you are using a mirrored RAID set, there might be an error while writing data to the disk. Click Rebuild in the RAID pane of Disk Utility.
If you are using a striped RAID set, delete the damaged RAID set. Your data may be lost. Be sure to back up the disks in your RAID set and other data regularly.
If you have a persistent problem with a disk in a mirrored RAID set, you may need to replace it. After you replace the damaged disk, click Rebuild to rebuild the RAID set.[/i[
G4 450 MP Gigabit Mac OS X (10.4.7)

HT4098 How do I unsubscribe from subscription VIP in the game StarMaker? every week, I removed 66 rubles, while I'm there not even sit, and how do I unsubscribe don't know, please help

How do I unsubscribe from subscription VIP in the game StarMaker? every week, I removed 66 rubles, while I'm there not even sit, and how do I unsubscribe don't know, please help

Contact the maker of the app. Apple has nothing to do with subscriptions to third party apps.

1) How to Boot from SAN for T4-1 Server with Solaris 11.1 OS on the disk? 2) How to SMI Label/Format a disk while OS Installation in Solaris 11.1?

FYI....boot from SAN is required for physical server (T4-1) (not OVM).
1) How to Boot from SAN for T4-1 Server with Solaris 11.1 OS on the disk?
The SAN disks allocated are visible in ok prompt. below is the output.
(0) ok show—disks
a) /pci@400/pci@2/pci@0/pci@f/pci@0/usb@0, 2/hub@2/hub@3/storage@2/disk
b) /pci@400/pci@2/pci@0/pci€a/SUNW, ezalxs@0, l/fp@0, 0/disk
e) /pci@400/pci@2/pci@0/pci@a/SUNW, ealxs@0/fp@0, 0/disk
d) /pci@400/pci@2/pci@0/pci@8/SUNW, emlxs@0, l/fp@0, 0/disk
e) /pci@400/pci@2/pci@0/pci@8/SUNW,enlxs@0/fp@0,0/disk
f) /pci@400/pci@2/pci@0/pci@4/scsi@0/disk
g) /pci@400/pci@1/pci@0/pci@4/scsi@0/disk
h) /iscsi—hba/disk
q) NO SELECTION
valid choice: a. . .h, q to quit c
/pci@400/pci@2/pci@0/pci@a/SUNW, ealxs@0/fp@0, 0/disk has been selected.
Type “Y ( Control—Y ) to insert it in the command line.
e.g. ok nvalias mydev “Y
for creating devalias mydev for /pci@400/pci@2/pci@0/pci@a/SUNW,emlxs@0/fp@0,0/disk
(0) ok set—sfs—boot
set—sfs—boot ?
We tried selecting a disk and applying sfs-boot at ok prompt.
Can you please help me providing detailed pre-requesites/steps/procedure to implement this and to start boot from SAN.
2) How to SMI Label/Format a disk while OS Installation in Solaris 11.1?
As we know that ZFS is the default filesystem in Solaris 11.
We have seen in the Oracle documentation that for rpool below are recommended:
- A disk that is intended for a ZFS root pool must be created with an SMI label, not an EFI label.
- Create root pools with slices by using the s* identifier.
- ZFS applies an EFI label when you create a storage pool with whole disks.
- In general, you should create a disk slice with the bulk of disk space in slice 0.
I have seen the solution that using format -e, we change the labelling but all the data will be lost, whats the way to apply a SMI Label/Format on a rpool disks while OS Installation itself.
Please provide me the steps to SMI Label a disk while installaing Solaris 11.1 OS.

Oracle recommends below things on rpool: (thats reason wanted to apply SMI Label)
I have seen in the Oracle documentation that for rpool below are recommended:
- A disk that is intended for a ZFS root pool must be created with an SMI label, not an EFI label.
- Create root pools with slices by using the s* identifier.
- ZFS applies an EFI label when you create a storage pool with whole disks.
- In general, you should create a disk slice with the bulk of disk space in slice 0.

Quicktime disables one of the disks in my RAID 5 array.

Hi,
I have just installed ver 7.2 of Quicktime and after I began playing a Quicktime movie file one of the disks on my RAID array came up as failed. I have managed to recover this problem, but is there anything I can do to stop this happening again???... (apart from going back to XP )
Cheers,
Mark.

I just had the same problem. This is the second time I'm having this issue, the first time was when I installed Quicktime the first time a couple months ago, I don't remember which version it was (cannot remember if it was during the installation of the first file I played). I lost one of my drive in my RAID 0 or 1 (mirroring), fortunately I was able to rebuilt the image.
The second was few minutes ago when I was trying to play the HD trailer of Rush Hour 3. But this time my computer could reboot, my 2 drives was marked as failed!!! I was really scared to lose my data. Fortunately when I went in the RAID controller setup, it was able to find one of my drive and now the second one is rebuilding. The first thing I did when I rebooted was to uninstall that crap of quicktime and will never install it again.
My config: Vista Ultimate 64, motherboard Asus P5B Deluxe with Intel Matrix Storage. Quicktime 7.2 updated few days ago.

How to remove a disk from a logical-drive in a 3510

Hello SUN masters,
I have a 3510 with 4 logical drives and 2 global spares. Logical drive 0 (ld0) has 14 disks and i want to assign 2 of those as global spares and leave ld0 with 12 drives. the other logical-drives have just 2 HDD so I won't touch them.
Drives are 78 GB and ld0 is supposed to have 476 GB, so space is enough with 12 HDD to have RAID1.
What is the procedure to remove a disk from a logical drive. when i telnet to the 3510 there is no option to remove a disk from a ld, only to add disks to logical-drives.
when i use sccli to access the 3510, i can't see an option in the menu.
Does anyone know the steps?
I copy below the configuration of this 3510.
Thanks a lot,
OM
sccli> show disks
Ch Id Size Speed LD Status IDs Rev
2(3) 0 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V4FS
WWNN 2000001862560447
2(3) 1 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V3MA
WWNN 200000186256037C
2(3) 2 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V4E8
WWNN 20000018625601EE
2(3) 3 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735SWZZ
WWNN 20000018625600B3
2(3) 4 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V3K8
WWNN 2000001862560DD9
2(3) 5 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V5RE
WWNN 200000186250FD75
2(3) 6 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735SHSL
WWNN 2000001862560E21
2(3) 7 68.37GB 200MB ld1 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V3HK
WWNN 2000001862560340
2(3) 8 68.37GB 200MB ld1 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735VRLS
WWNN 200000186250FDD9
2(3) 9 68.37GB 200MB ld2 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735VACF
WWNN 200000186250FF21
2(3) 10 68.37GB 200MB ld2 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V3MN
WWNN 2000001862560338
2(3) 11 68.37GB 200MB ld0 ONLINE SEAGATE ST373207FSUN72G 055A
S/N 4735V3LB
WWNN 2000001862560393
2(3) 16 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWUAVL
WWNN 2000000087A06F78
2(3) 17 68.37GB 200MB GLOBAL STAND-BY HITACHI HUS1073FASUN72G 2A08
S/N 51RWUM51
WWNN 20000000879FEE53
2(3) 18 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWULUZ
WWNN 2000000087A04C50
2(3) 19 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWULX2
WWNN 2000000087A04D47
2(3) 20 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWUAYG
WWNN 2000000087A05A9F
2(3) 21 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWULJE
WWNN 2000000087A0480A
2(3) 22 68.37GB 200MB ld0 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWULP4
WWNN 2000000087A017F1
2(3) 23 68.37GB 200MB ld3 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWULKH
WWNN 20000000879FF323
2(3) 24 68.37GB 200MB ld3 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWUM17
WWNN 2000000087A05214
2(3) 25 68.37GB 200MB ld4 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWUPU5
WWNN 2000000087A04D44
2(3) 26 68.37GB 200MB ld4 ONLINE HITACHI HUS1073FASUN72G 2A08
S/N 51RWUAYJ
WWNN 2000000087A03A83
2(3) 27 68.37GB 200MB GLOBAL STAND-BY HITACHI HUS1073FASUN72G 2A08
S/N 51RWUB26
WWNN 2000000087A07653
sccli> show logical-drives
LD LD-ID Size Assigned Type Disks Spare Failed Status
ld0 44D2C94E 476.81GB Primary RAID1 14 2 0 Good
Write-Policy Default StripeSize 32KB
ld1 7703C275 68.12GB Primary RAID1 2 2 0 Good
Write-Policy Default StripeSize 32KB
ld2 41803916 68.12GB Primary RAID1 2 2 0 Good
Write-Policy Default StripeSize 32KB
ld3 0B192FEE 68.12GB Primary RAID1 2 2 0 Good
Write-Policy Default StripeSize 32KB
ld4 4DE9645E 68.12GB Primary RAID1 2 2 0 Good
Write-Policy Default StripeSize 32KB
sccli>

The only solution you have is:
- Backup the data.
- Remove the LD.
- Recreate the LD with 12 drives.
- Restore the data.
Although you can add physical drives into a LD, you cannot remove them from a LD, unless you go through a backup/restore.

Proper removal of disk while degraded RAID

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