Virtual Disk Failover/Multipathing question
In the LDOM 1.1 Admin guide the section on virtual disk multipathing leaves me with one question.
LDOM 1.1
Scenario: T5240 with 2 IO domains. Each IO domain has an HBA attached to shared SAN storage. The storage folks assign you the same 2 luns to both HBA's. Does each LUN have to be a member of it's own mpgroup? Or can all 4 luns belong to the same mpgroup?
Put another way which is correct A or B?
(Assuming the SAN disks are c1t0d1 c1t1d1 refer to the same two LUNS on both IO domains.)
A:
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdsdev mpgroup=guestdom1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdisk vdisk0 vol0@primary-vds0 guestldom1
ldm add-vdisk vdisk1 vol1@primary-vds0 guestldom1
B:
ldm add-vdsdev mpgroup=guestdom1root /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1root /dev/dsk/c1t0d1 vol0@primary-vds0
ldm add-vdsdev mpgroup=guestdom1data1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdsdev mpgroup=guestdom1data1 /dev/dsk/c1t1d1 vol1@primary-vds0
ldm add-vdisk vdisk0 vol0@primary-vds0 guestldom1
ldm add-vdisk vdisk1 vol1@primary-vds0 guestldom1
Hello,
this is the only forum entry to ldoms and the mpgroup option,
so i hope to get the answer to my problem here.
Here my Config:
PRIMARY IO DOMAIN
VDS
NAME VOLUME OPTIONS MPGROUP DEVICE
primary-vds0 disk3_ld0001 disk3_ld0001 /dev/dsk/c6t60060480000290102065533030434531d0s2
disk2_ld0001 disk2_ld0001 /dev/dsk/c6t60060480000290102065533030374238d0s2
disk1_ld0001 disk1_ld0001 /dev/dsk/c6t60060480000290102065533030434445d0s2
CLIENT VOLUME
vdisk2@ld0001 disk3_ld0001
vdisk1@ld0001 disk2_ld0001
vdisk0@ld0001 disk1_ld0001
SECONDARY IO DOMAIN
VDS
NAME VOLUME OPTIONS MPGROUP DEVICE
secondary-vds0 disk3_ld0001 disk3_ld0001 /dev/dsk/c3t60060480000290102065533030434531d0s2
disk2_ld0001 disk2_ld0001 /dev/dsk/c3t60060480000290102065533030374238d0s2
disk1_ld0001 disk1_ld0001 /dev/dsk/c3t60060480000290102065533030434445d0s2
CLIENT VOLUME
vdisk2@ld0001 disk3_ld0001
vdisk1@ld0001 disk2_ld0001
vdisk0@ld0001 disk1_ld0001GUEST DOMAIN
DISK
NAME VOLUME TOUT DEVICE SERVER MPGROUP
vdisk2 disk3_ld0001@secondary-vds0 1 disk@2 secondary disk3_ld0001
PORT MPGROUP VOLUME MPGROUP SERVER
0 disk3_ld0001@primary-vds0 primary
1 disk3_ld0001@secondary-vds0 secondary
DISK
NAME VOLUME TOUT DEVICE SERVER MPGROUP
vdisk1 disk2_ld0001@primary-vds0 1 disk@1 primary disk2_ld0001
PORT MPGROUP VOLUME MPGROUP SERVER
0 disk2_ld0001@primary-vds0 primary
1 disk2_ld0001@secondary-vds0 secondary
DISK
NAME VOLUME TOUT DEVICE SERVER MPGROUP
vdisk0 disk1_ld0001@primary-vds0 1 disk@0 primary disk1_ld0001
PORT MPGROUP VOLUME MPGROUP SERVER
0 disk1_ld0001@primary-vds0 primary
1 disk1_ld0001@secondary-vds0 secondaryThe disks are the same on both IO domains.
My problem is, that i loose the disks if i reboot the primary io domain.
is there something wrong?
Thanks and greets.
Tobias
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Hi, I'm having a problem in a VM Guest cluster using Windows Server 2012 R2 and virtual disk sharing enabled.
It's a SQL 2012 cluster, which has around 10 vhdx disks shared this way. all the VHDX files are inside LUNs on a SAN. These LUNs are presented to all clustered members of the Windows Server 2012 R2 Hyper-V cluster, via Cluster Shared Volumes.
Yesterday happened a very strange problem, both the Quorum Disk and the DTC disks got the information completetly erased. The vhdx disks themselves where there, but the info inside was gone.
The SQL admin had to recreated both disks, but now we don't know if this issue was related to the virtualization platform or another event inside the cluster itself.
Right now I'm seen this errors on one of the VM Guest:
Log Name: System
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Date: 3/4/2014 11:54:55 AM
Event ID: 1069
Task Category: Resource Control Manager
Level: Error
Keywords:
User: SYSTEM
Computer: ServerDB02.domain.com
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Based on the failure policies for the resource and role, the cluster service may try to bring the resource online on this node or move the group to another node of the cluster and then restart it. Check the resource and group state using Failover Cluster
Manager or the Get-ClusterResource Windows PowerShell cmdlet.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
<EventID>1069</EventID>
<Version>1</Version>
<Level>2</Level>
<Task>3</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
<EventRecordID>14140</EventRecordID>
<Correlation />
<Execution ProcessID="1684" ThreadID="2180" />
<Channel>System</Channel>
<Computer>ServerDB02.domain.com</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="ResourceName">Quorum-HDD</Data>
<Data Name="ResourceGroup">Cluster Group</Data>
<Data Name="ResTypeDll">Physical Disk</Data>
</EventData>
</Event>
Log Name: System
Source: Microsoft-Windows-FailoverClustering
Date: 3/4/2014 11:54:55 AM
Event ID: 1558
Task Category: Quorum Manager
Level: Warning
Keywords:
User: SYSTEM
Computer: ServerDB02.domain.com
Description:
The cluster service detected a problem with the witness resource. The witness resource will be failed over to another node within the cluster in an attempt to reestablish access to cluster configuration data.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-FailoverClustering" Guid="{BAF908EA-3421-4CA9-9B84-6689B8C6F85F}" />
<EventID>1558</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>42</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2014-03-04T17:54:55.498842300Z" />
<EventRecordID>14139</EventRecordID>
<Correlation />
<Execution ProcessID="1684" ThreadID="2180" />
<Channel>System</Channel>
<Computer>ServerDB02.domain.com</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="NodeName">ServerDB02</Data>
</EventData>
</Event>
We don't know if this can happen again, what if this happens on disk with data?! We don't know if this is related to the virtual disk sharing technology or anything related to virtualization, but I'm asking here to find out if it is a possibility.
Any ideas are appreciated.
Thanks.
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Please refer to the following link:
http://blogs.technet.com/b/keithmayer/archive/2013/03/21/virtual-machine-guest-clustering-with-windows-server-2012-become-a-virtualization-expert-in-20-days-part-14-of-20.aspx#.Ux172HnxtNA
Best Regards,
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Unable to repair degraded Virtual disks in Storage Spaces 2012R2
Hi all,
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OS = Windows Server 2012R2
Anyone have an idea?
Thanks!Hello Partner,
Thanks so much for contacting Microsoft. This is Sophia who will help you with this issue.
From your description, I learnt that the issue you are experiencing is that you failed to repair degraded Virtual disks in Storage Spaces 2012 R2. Please let me
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First of all, I would like to suggest you install the following hotfix to upgrade storage related files to the newest edition. After that, please test how the issue
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==========================================
Package: This is to upgrade NTFS.sys.
KB Article Number(s): 2996802
Language: All (Global)
Platform: x64
Location: (http://hotfixv4.microsoft.com/Windows%208.1/Windows%20Server%202012%20R2/sp1/Fix524134/9600/free/480025_intl_x64_zip.exe)
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KB Article Number(s): 2914743
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Best regards,
Sophia Sun
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. -
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iSCSI as you are using with a NAS such as Synology or QNAP. NAS Selector - Support - Synology - Network Attached Storage (NAS)
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We used to use a HP P2000 (on old G1), but it's since been retired. Worked pretty well once firmware was upgraded. http://www8.hp.com/us/en/products/disk-storage/product-detail.html?oid=4118559#!tab=features. They can be connected via iSCSI, Fibre Channel or 6GB SAS so they are flexible and reasonably priced.
Recommendations:
Use RAID 6 with your large disk arrays. With large disks there is a measurable failure rate when rebuilding a failed RAID5 array based on MTBF.
Use smaller 15K disks in RAID 0+1 for speed on databases/Exchange.
Use slower 7.2K disks in RAID6 for file storage.
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D -
This may be a dumb question, but I can't seem to find any definitive information after having done many, many searches. Short question is - can Windows Server Backup spread a single backup job across multiple disks if they are not in a storage
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Background:
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My guess is that it does *not* spread them across individual disks, but I just wanted to get confirmation.
ThanksMandy,
Thank you for following up on my question.
Unfortunately the article you referenced doesn't address what I am trying to accomplish.
The article focuses on saving the same backup job to multiple disks and rotating the disks between on and offsite for enhanced protection. However, it still requires that an individual backup job fits on a single disk.
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Unable to repair degraded Virtual disks in Storage Spaces under Hyper-V 2012 R2 Core
Hi all,
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Looks like metadata is corrupted.
Followed this post to upgrade Storage Spaces to latest version:
https://social.technet.microsoft.com/Forums/windowsserver/en-US/eead59e9-5e49-4bb6-8cbb-1dafddd9576b/unable-to-repair-degraded-virtual-disks-in-storage-spaces-2012r2?forum=winserverfiles
Still, to no avail.
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Any help will be greatly appreciated.
PS C:\corefig> Get-PhysicalDisk | ? OperationalStatus -ne OK | fl
ObjectId : {1}\\HV001\root/Microsoft/Windows/Storage/Pr
oviders_v2\SPACES_PhysicalDisk.ObjectId="{95
42513c-a0d4-11e3-8123-806e6f6e6963}:PD:{7e22
245f-0cf6-11e3-b1db-806e6f6e6963}"
PassThroughClass :
PassThroughIds :
PassThroughNamespace :
PassThroughServer :
UniqueId :
AllocatedSize : 1218696970240
BusType : Unknown
CannotPoolReason : In a Pool
CanPool : False
Description :
DeviceId :
EnclosureNumber :
FirmwareVersion :
FriendlyName : PhysicalDisk-1
HealthStatus : Warning
IsIndicationEnabled :
IsPartial : False
LogicalSectorSize : 0
Manufacturer :
MediaType : UnSpecified
Model :
OperationalStatus : Lost Communication
OtherCannotPoolReasonDescription :
PartNumber :
PhysicalLocation :
PhysicalSectorSize : 0
SerialNumber :
Size : 1999575711744
SlotNumber :
SoftwareVersion :
SpindleSpeed : 0
SupportedUsages : {Auto-Select, Manual-Select, Hot Spare,
Retired...}
Usage : Retired
PSComputerName :
PS C:\corefig> get-physicaldisk
FriendlyName CanPool OperationalS HealthStatus Usage Size
tatus
PhysicalDisk4 False OK Healthy Auto-Select 73.75 GB
PhysicalDisk0 False OK Healthy Auto-Select 1.82 TB
PhysicalDi... False Lost Comm... Warning Retired 1.82 TB
PhysicalDisk2 False OK Healthy Auto-Select 930.75 GB
PhysicalDisk3 False OK Healthy Auto-Select 74.53 GB
PhysicalDisk1 False OK Healthy Auto-Select 1.82 TB
PS C:\corefig> get-virtualdisk -friendlyname 'Data' |FC
class CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_VirtualDisk
ObjectId = {1}\\HV001\root/Microsoft/Windows/Storage/Providers_v2\SPACES_Virt
ualDisk.ObjectId="{9542513c-a0d4-11e3-8123-806e6f6e6963}:VD:{3debf056-01f1-11
e3-b1d6-001fbc081884}{7e2229cf-0cf6-11e3-b1db-001fbc081884}"
PassThroughClass =
PassThroughIds =
PassThroughNamespace =
PassThroughServer =
UniqueId = CF29227EF60CE311B1DB001FBC081884
Access = Read/Write
AllocatedSize = 548413636608
DetachedReason = Incomplete
FootprintOnPool = 1096827273216
FriendlyName = Data
HealthStatus = Unhealthy
Interleave = 262144
IsDeduplicationEnabled = False
IsEnclosureAware = False
IsManualAttach = False
IsSnapshot = False
LogicalSectorSize = 512
Name =
NameFormat =
NumberOfAvailableCopies =
NumberOfColumns = 1
NumberOfDataCopies = 2
OperationalStatus = Detached
OtherOperationalStatusDescription =
OtherUsageDescription =
ParityLayout = Unknown
PhysicalDiskRedundancy = 1
PhysicalSectorSize = 4096
ProvisioningType = Thin
RequestNoSinglePointOfFailure = False
ResiliencySettingName = Mirror
Size = 1099511627776
UniqueIdFormat = Vendor Specific
UniqueIdFormatDescription =
Usage = Other
WriteCacheSize = 0
PSComputerName =
PS C:\corefig> get-virtualdisk -friendlyname 'Backups' |FC
class CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_VirtualDisk
ObjectId = {1}\\HV001\root/Microsoft/Windows/Storage/Providers_v2\SPACES_Virt
ualDisk.ObjectId="{9542513c-a0d4-11e3-8123-806e6f6e6963}:VD:{3debf056-01f1-11
e3-b1d6-001fbc081884}{7e22255e-0cf6-11e3-b1db-001fbc081884}"
PassThroughClass =
PassThroughIds =
PassThroughNamespace =
PassThroughServer =
UniqueId = 5E25227EF60CE311B1DB001FBC081884
Access = Read/Write
AllocatedSize = 743566213120
DetachedReason = Incomplete
FootprintOnPool = 1487132426240
FriendlyName = Backups
HealthStatus = Unhealthy
Interleave = 262144
IsDeduplicationEnabled = False
IsEnclosureAware = False
IsManualAttach = False
IsSnapshot = False
LogicalSectorSize = 512
Name =
NameFormat =
NumberOfAvailableCopies =
NumberOfColumns = 1
NumberOfDataCopies = 2
OperationalStatus = Detached
OtherOperationalStatusDescription =
OtherUsageDescription =
ParityLayout = Unknown
PhysicalDiskRedundancy = 1
PhysicalSectorSize = 4096
ProvisioningType = Thin
RequestNoSinglePointOfFailure = False
ResiliencySettingName = Mirror
Size = 1649267441664
UniqueIdFormat = Vendor Specific
UniqueIdFormatDescription =
Usage = Other
WriteCacheSize = 0
PSComputerName =
PS C:\corefig> get-virtualdisk -friendlyname 'Music' |FC
class CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_VirtualDisk
ObjectId = {1}\\HV001\root/Microsoft/Windows/Storage/Providers_v2\SPACES_Virt
ualDisk.ObjectId="{9542513c-a0d4-11e3-8123-806e6f6e6963}:VD:{3debf056-01f1-11
e3-b1d6-001fbc081884}{7e2238b9-0cf6-11e3-b1db-001fbc081884}"
PassThroughClass =
PassThroughIds =
PassThroughNamespace =
PassThroughServer =
UniqueId = B938227EF60CE311B1DB001FBC081884
Access = Read/Write
AllocatedSize = 39728447488
DetachedReason = By Policy
FootprintOnPool = 79456894976
FriendlyName = Music
HealthStatus = Unknown
Interleave = 262144
IsDeduplicationEnabled = False
IsEnclosureAware = False
IsManualAttach = True
IsSnapshot = False
LogicalSectorSize = 512
Name =
NameFormat =
NumberOfAvailableCopies =
NumberOfColumns = 1
NumberOfDataCopies = 2
OperationalStatus = Detached
OtherOperationalStatusDescription =
OtherUsageDescription =
ParityLayout = Unknown
PhysicalDiskRedundancy = 1
PhysicalSectorSize = 4096
ProvisioningType = Thin
RequestNoSinglePointOfFailure = False
ResiliencySettingName = Mirror
Size = 161061273600
UniqueIdFormat = Vendor Specific
UniqueIdFormatDescription =
Usage = Other
WriteCacheSize = 0
PSComputerName =
PS C:\corefig> get-virtualdisk -friendlyname 'Videos' |FC
class CimInstance#ROOT/Microsoft/Windows/Storage/MSFT_VirtualDisk
ObjectId = {1}\\HV001\root/Microsoft/Windows/Storage/Providers_v2\SPACES_Virt
ualDisk.ObjectId="{9542513c-a0d4-11e3-8123-806e6f6e6963}:VD:{3debf056-01f1-11
e3-b1d6-001fbc081884}{7e2225bc-0cf6-11e3-b1db-001fbc081884}"
PassThroughClass =
PassThroughIds =
PassThroughNamespace =
PassThroughServer =
UniqueId = BC25227EF60CE311B1DB001FBC081884
Access = Read/Write
AllocatedSize = 223606734848
DetachedReason = Incomplete
FootprintOnPool = 447213469696
FriendlyName = Videos
HealthStatus = Unhealthy
Interleave = 262144
IsDeduplicationEnabled = False
IsEnclosureAware = False
IsManualAttach = False
IsSnapshot = False
LogicalSectorSize = 512
Name =
NameFormat =
NumberOfAvailableCopies =
NumberOfColumns = 1
NumberOfDataCopies = 2
OperationalStatus = Detached
OtherOperationalStatusDescription =
OtherUsageDescription =
ParityLayout = Unknown
PhysicalDiskRedundancy = 1
PhysicalSectorSize = 4096
ProvisioningType = Thin
RequestNoSinglePointOfFailure = False
ResiliencySettingName = Mirror
Size = 1759325978624
UniqueIdFormat = Vendor Specific
UniqueIdFormatDescription =
Usage = Other
WriteCacheSize = 0
PSComputerName =Hi omon_77,
You can first refer the following step by step third party article and KB:
Replace Failed Disks and Repair JBODs for Storage Spaces in Windows Server
https://technet.microsoft.com/en-us/library/dn782852.aspx?f=255&MSPPError=-2147217396
Replacing a failed disk in Windows Server 2012 Storage Spaces with PowerShell
https://www.hodgkins.net.au/storage/replace-failed-disk-in-storage-spaces-pool-with-powershell/
Step By Step: How to Replace Faulty Disk In Two-Way Mirrored Storage Tiered Space
http://charbelnemnom.com/2014/09/step-by-step-how-to-replace-faulty-disk-in-two-way-mirrored-storage-tiered-space-storagespaces-ws2012r2/
More information:
Storage Spaces - Designing for Performance
http://social.technet.microsoft.com/wiki/contents/articles/15200.storage-spaces-designing-for-performance.aspx
Storage Spaces Overview
http://technet.microsoft.com/en-us/library/hh831739.aspx
Windows Server Storage Spaces: What is it and why should I use it?
http://curah.microsoft.com/5049/windows-server-2012-r2-storage-spaces-what-is-it-and-why-should-i-use-it
I’m glad to be of help to you!
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected] -
Cannot see more than one shared virtual disk at a time
I have multiple virtual disks configured and as I add them to the specific virtual machine im using it modifies the vm.cfg as follows:
disk = ['file:/OVS/running_pool/110_openfiler/System.img,hda,w',
',hdc:cdrom,r',
'file:/OVS/sharedDisk/openfiler-ocs-u01.img,hdd,w!',
'file:/OVS/sharedDisk/openfiler-ocs-u02.img,hde,w!',
'file:/OVS/sharedDisk/openfiler-SAN-test.img,hdf,w!',
when the machine boots up the contents of /dev only contains the shared drive hdd, thus I cannot see hde or hdf.
One thing I tried was to edit the vm.cfg after adding the shared drives to the machine to mimic:
disk = ['file:/OVS/running_pool/110_openfiler/System.img,hda,w',
',hdc:cdrom,r',
'file:/OVS/sharedDisk/openfiler-ocs-u01.img,sda,w!',
'file:/OVS/sharedDisk/openfiler-ocs-u02.img,sdb,w!',
'file:/OVS/sharedDisk/openfiler-SAN-test.img,sdc,w!',
This allows me to see all three drives when I issue fdisk -l
Disk /dev/hda: 105.2 GB, 105226698752 bytes
255 heads, 63 sectors/track, 12793 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/hda1 * 1 13 104391 83 Linux
/dev/hda2 14 12539 100615095 83 Linux
/dev/hda3 12540 12793 2040255 82 Linux swap / Solaris
Disk /dev/sda: 20.9 GB, 20971520512 bytes
255 heads, 63 sectors/track, 2549 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 2550 20480000 ee EFI GPT
Disk /dev/sdb: 20.9 GB, 20972569088 bytes
255 heads, 63 sectors/track, 2549 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 2550 20481024 ee EFI GPT
Disk /dev/sdc: 104.8 GB, 104857600512 bytes
255 heads, 63 sectors/track, 12748 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 1 12749 102400000 ee EFI GPT
but then my question becomes... could this cause any potential problems?I found that there are 4 IDE disks and 7 SCSI disks at most for HVM guest on Oracle VM 2.1 version. For IDE disks, The available disknames are from hda to hdd; and for SCSI disks, are from sda to sdg. you may make test about it. :)
Message was edited by:
Changhai -
How to move a virtual disk's physical allocation within a Storage Pool
I have a pool of 3x500GB where one the physical drives is having intermittent issues. Currently, there is only one parity Virtual Disk of 300GB Fixed across 3 columns. I want to replace the bad drive with a good one. The old way (pre-2012) was replace the
disk, repair the RAID 5, resync and done. These basic steps are not working.
So far I have added a 4th 500GB drive to the pool. After searching and failing to find a way to move the data non-destructively, I decided to just pull the data cable on the disk I wanted to replace. After refresh/rescan, the disconnected drive shows "lost
communication" and the virtual disk (after trying to repair) shows "unknown" (but the volume on that disk is accessible in Explorer). When I try to remove the physical disk in Server Manager, I get "The selected physical disk cannot
be removed". Reading the error message, I see that the replacement disk cannot contain any part of a virtual disk. The replacement disk that I just added appears to have some space allocated (possibly because I have tried this same procedure a couple
of times already?). When I look at the parity disk properties/health, it shows all four physical disks under "physical disks in use".
I have deleted and recreated a lot of storage pools lately while trying to understand how they work but I would like to avoid that this time. The data on the virtual disk in question is highly deduplicated and it took quite a while to get it that way. Since
I can't find a way to copy/mirror the disk while keeping it fully deduplicated, I would need 3x the space to copy it all off, or a lot of time to load up and deduplicate a new virtual disk.
I have several questions:
1. How can a 3 column parity disk use parts of four physical disks? And can that be fixed without recreating the virtual disk?
2. When creating a virtual disk (for example a 3 column disk in a pool that has four or more physical drives), is there a way to specify which physical disks to use?
3. I understand that after a physical disk failure, the recovery process will move a virtual disk's allocation to a replacement disk, but can a virtual disk's allocation be moved manually among physical disks within the same storage pool
using a PS script?
4. Can a deduplicated virtual disk be moved/mirrored/backed up without expanding the data?
Any help is appreciated.Im still fighting with storage pools and need more tests to be done and have a lot of questions my self but ther goes what I understood so far.
You may define physical disks used for virtual disk by Powershell ,
for list of all commands follow this:
http://technet.microsoft.com/en-us/library/hh848705(v=wps.620).aspx ,
specific command defining physical disks to be used on already existing virtual disk:
Example 4: Manually assigning physical disks to a virtual disk
This example gets two physical disks that have already been added to the storage pool and designated as ManualSelect disks,
PhysicalDisk3 and PhysicalDisk4, and assigns them to the virtual disk
UserData.
PS C:\> Add-PhysicalDisk –VirtualDiskFriendlyName UserData –PhysicalDisks (Get-PhysicalDisk -FriendlyName PhysicalDisk3, PhysicalDisk4)
http://technet.microsoft.com/en-us/library/hh848702(v=wps.620).aspx
If You haven't seen this yet You may check it out http://blogs.technet.com/b/yungchou/archive/2011/12/06/free-ebooks.aspx -
Hello
I'm setting up a DPM server (2012 R2) at a remote site; everything goes well with no issues until a protection group is created, at which point I get the following error;
Create protection group: Protection Group 1 failed:
Error 360: The operation failed due to a virtual disk service error
Error details: The system cannot find the file specified
Recommended action: Retry the operation.
The environment is as follows;
- Virtual Machine Running Server 2008 R2 Fully updated
- Storage Pool is an iSCSI connection Thick Provisioned 1TB GPT and shows in Disk Management with no issues.
- Have connected to Session 0 (console)
- Error log shows The provider did not receive a Plug and Play service notification for the volume. volume=10 for the VDS Dynamic Provider
Can Anyone Help?
Thanks
.Adam LangdonHi,
Disk defrag is initiated when a volume shrink is attempted. See if there is any problem defragging a volume and correct any problems doing that.
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. Regards, Mike J. [MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights. -
How can I eject a virtual disk that keeps coming back?
For my MBP, with OS 10.6, I bought a WD eternal hard drive which comes with back-up software, "WD SmartWare." I use the Time Machine, and don't need other back-up software (I assume). A virtual disk holds the "SmartWare", and it shows on the desktop whenever the hard drive is connected.
Here's the problem: If I try to eject the virtual disk and the partitions that I've put on the drive, and put my MBP to sleep to move to another location, the virtual disk icon immediately reappears - it will not stay ejected. If I simply pull out the USB of the drive, pick up MBP and go about my business elsewhere, when I return and reconnect the drive I get a warning that I've disconnected the drive incorrectly and could lose data, hence "don't do that!"
So, so far the only way I can avoid the warning is to shut down the MBP and then disconnect the drive and leave. Then, the drive is happy.
Question: is there a way to eject the virtual drive so that it stays ejected, so I can disconnect the WD hard drive to allow me a change of physical location using sleep mode and not shut-down for the Mac?
Tomasif you use disk utility to delete all partitions on that drive and create a new partition and format it with mac os journalled your problem will be solved
-
Expand virtual disk on sun storage 6140
I have configured sun storage 6140, but volume is %100.
How could i expand virtual disk without data lose?
How could i add any disk storage pool?
thanks..
regards..Hi Dan,
Do you mean that you cannot mount the Journal virtual drives on the Storage Space? Please run the command “Get-VirtualDisk” to check the status of the virtual disk.
You could run the command below to make your storage space read-only.
Get-VirtualDisk –Friendlyname name_of_your_space | Get-Disk | Set-Disk –IsReadOnly $true
For more detailed information, you could refer to the article below:
Storage Spaces Frequently Asked Questions (FAQ)
http://social.technet.microsoft.com/wiki/contents/articles/11382.storage-spaces-frequently-asked-questions-faq.aspx#What_happens_if_I_run_out_of_physical_capacity_on_a_thinly_provisioned_storage_space
Best Regards,
Mandy
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]
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