the LUN max size

Similar Questions

• Size of the LUN Max size minimum and maximum RDM?

  The Maximums on 4.1 Configuration seems to have been a change in the size of the LUN max, of the strange 2 TB - 512 bytes to just 2 TB. Can anyone confirm that it is correct in 4.1? As I understand it in 4.0, if you got your logic unit number created to exactly 2 TB, you have lost about 500 GB of space (?).

  It would be interesting to know if it is "fixed" in 4.1 and if only the use of 4.1 hosts then 2 TB LUNS could be created?

  In addition, the maximum size of RDM always seems to be 2 TB - 512 bytes in 4.1. What is the reason for this kind of limit? If the guest operating system can accept more large drives of 2 TB, which need not enough?

  ricnob wrote:

  Even on the store of NFS, the maximum size of virtual disk to a virtual machine will be 2 TB - 512 bytes?

  Yes, there is a maximum specified for the virtual machine.

  Would a connection iSCSI comments launched a LUN liked work of 2 TB (if the guest operating system can handle)?

  Yes, it's a way to work around the limitation of current 2 TB - 512 bytes.

  The information about this change in the passage of Q & A at the end of TA7121 - ' next generation VM Storage Solutions with API for integration (VAAI) Array vStorage "was held in San Francisco just a couple of weeks.

  Interesting. Did you get any sense if this possible change should come an update for 4.0 - 4.1 or may appear in a future version, 4.5 or 5.0?

  I will attend at Vmworld in Copenhagen in October, so maybe I should visit this session.

  You know, I don't really have a strong impression be it on this issue.  My stomach seems to tell me that it will be in the next version of main product.  If I remember correctly, one of the presenters of the session was one of the engineers who worked initially make VMFS.  This session was really good, so I recommend anyway.

• What is the VMDK max size I can create on 2 TB LUN recommended?

  Hello, guys!

  I have VM DB with system files and configuration stored on a LUN and a few 2 TB LUNs, where the DB data are stored.

  2 TB LUN when I create new VMDK file that the size maximum of the VMDK file I could create?

  2 TB? 1.99 CT? 1.8 TO?

  I have to leave no space left for the needs of VMWare?

  Thank you!

  Before vSphere 5.5, the maximum virtual disk size is 2 TB less than 512 bytes. If you need create virtual maximum snapshots disk size 2 032 GB because of General fresh metadata in the snapshot file. With vSphere 5.5 and virtual machines running on the latest version of HW, virtual disks can have a size of 62 to on a VMFS5 data store.

  Basically, there is no need to leave a large amount of free disk space on a data store. However, in case you want to or need to create snapshots, remember that - from vSphere 5.0 - snapshots are by default created in the same data store as virtual disks of their parent. In addition, vSphere can store some data on the data store, for example for HA datastore heartbeats. So I would say that you leave a free space on the disk (a few GB should be ok).

  As a side note. If you go to the maximum capacity of data store, you can reconfigure the alarm of the use of the data store.

  André

• PowerCLI reports wrong of the LUN size when perennial reservations are met * and * size of the LUN is changed.

  My question is: is this expected behavior?

  In short, the situation is this: we have a cluster running ESXi 5.5.0 build 1746018. Two guests Windows Server R2 2012 are running a SQL Server Cluster (MSCS), making use of RDM with a physical SCSI emulation. Which requires LUNS of perennial reservations activated. All is well until the customer decides to expand two of the LUNS. PowerCLI continues to account for the original size of those LUNs, which breaks our reports.

  Logically, it makes sense, but it still seems a bit of an ejection. Has anyone seen elsewhere this behavior and you have found ways around it?

  See you soon!

  You didn't say how to retrieve the size of the LUN.

  If not through esxcli, not the following returns the correct size (change the hostname ESXi and LUN canonicalname)?

  $esxcli = get-EsxCli - VMHost MyEsx

  $esxcli.storage.core.device.list ('naa.60050768123455af1800009876000023')

• Get the size of the lun by using the name of runtime

  Hello everyone

  Does anyone know how to get the size of the lun using the runtime name?

  $runtimeName = "vmhba0:C0:T0:L3".

  You mean something like this?

  $runtimeName = "vmhba2:C0:T4:L42"
  
  Get-VMHost MyEsx | Get-ScsiLun | where {$_.RuntimeName -eq $runtimeName} |Select RuntimeName, CapacityGB
  

• Cannot expand the data store after you have developed the LUN size

  Greetings:

  I have an interesting problem that happens with my server ESXi.  I've expaneded a 1 logical unit number. 5 t 3 t, re-read the SAN of the host itself (not) yet ESXi always reports the LUN size as 1. 5 t and not extensible.

  SAN is an EMC VNX and Unisphere, in fact, reports the size of the LUN 3 t.  The VMFS on this logical unit number is at version 5.54.

  I did updates and renumerisations a single host and nothing does change regarding the size of the LUN as reported in VMware.  I can't imagine what is a tissue issue given that the underlying data is always available and functional.

  Does anyone have any suggestions to try this?

  Ron

  You have a RecoverPoint of installation for this logic unit number? I fell right on the same problem as you described and found this article. It worked for me.

  http://www.mikes.EU/index.php/how-to/254-how-to-resize-a-LUN-that-is-already-replicated-by-EMC-RecoverPoint

  ~ Tim

• Size of the LUN. Urgent request.

  I have a node cluster 3 ESX4.1U1 with iSCSI SAN connectivity. I have multiple VMFS LUNS mapped in the cluster, and certain RDM mapped to the guests.

  A guest, a Windows 2008 R2 VM, has a large ROW mapped. This, according to the SAN is 1.89 TB in size, and I am almost out of space. If I look at storage adapters in vCenter Configuration, it also shows that 1.89 TB, but the Windows 2008 VM shows like 1936 GB. OK, so that sounds about right.

  I want to add an another 100 GB to the LUN. I added this on the SAN, so the LUN shows now 1.99 TB. A refreshment in vCenter on each cluster node also shows the LUN now as 1.99 TB, so knowing the 2 TB LUN limit, I should be ok.

  I have re-scanned disks in the Windows 2008 VM and it shows the available extra 100 GB, so I guess I can extend the volume in free space, but this will push the volume size up to 2036 GB. I read that VMware calculates LUN size in base10, so the maximum size is 2000 GB - 512bytes. I'll have a LUN liked than that, at least in the comments.

  Thing is, at this stage, that didn't stop me doing. I have no error or warning, and the fact that the cluster sees the LUN 1.99 TB seems to imply, I should be ok.

  Before I develop the volume free space, can someone confirm if I'm having problems with this? It's quite urgent, so a quick response would be appreciated. The volume of the guest is a basic (not dynamic or GPT) disk. I don't know that the MBR in Windows volume limit is 2.19 TB, so I should be ok with this.

  Look for example at the table at the bottom of the http://kb.vmware.com/kb/1012384 (load calculation required by the snapshot files)

  André

• HARD drive 2 TB - stuck to the size of the LUN 256 GB

  I'm unable to untilize the free space on a 2 TB HARD drive. I am told is 1.81 TB free space but I'm going to create a data store, I thought that the maximum size is 256 GB. Also, when I try to increase it, it tells me that the value is greater than the capacity of the disc (which contradicts the previous readings).

  Screenshots:

  http://img694.imageshack.us/img694/4851/FreeSpace.PNG

  http://img851.imageshack.us/img851/709/MaxSpace.PNG

  http://img714.imageshack.us/img714/5878/customspace.PNG

  Here is the result complete fdisk:

  ~ # fdisk-l
  
  Disk/dev/disks/t10. ATA___Hitachi_HDS723020BLA642___MN1220F3275YED: 2000,3 GB, 2000398934016 bytes
  255 heads, 63 sectors/track, 243201 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
  Device boot start end blocks Id system
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN1220F3275YEDp1 1 243201 1953511008 + fb VMFS
  
  Disk/dev/disks/t10. ATA___Hitachi_HDS723020BLA642___MN1220F3275XVD: 2000,3 GB, 2000398934016 bytes
  255 heads, 63 sectors/track, 243201 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
  Device boot start end blocks Id system
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN1220F3275XVDp1 1 243201 1953511008 + fb VMFS
  
  Disk/dev/disks/t10. ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3K: 2000,3 GB, 2000398934016 bytes
  Heads of 64, 32 sectors/track, 1907729 cylinders
  Units = cylinders of 2048 * 512 = 1048576 bytes
  
  Device boot start end blocks Id system
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp1 5 900 917504 5 extended
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp2 901 4995 4193280 6 FAT16
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp4 * 1 4 4080 4 FAT16 < 32M

  
  / dev/Disks/T10. 5 254 255984 6 FAT16 ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp5
  / dev/Disks/T10. 255 504 255984 6 FAT16 ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp6
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp7 505 614 112624 VMKcore fc
  / dev/Disks/T10. 615 900 292848 6 FAT16 ATA___Hitachi_HDS723020BLA642___MN5220F32ELD3Kp8
  
  Partition table entries are not in the order of disc
  
  Disk/dev/disks/t10. ATA___Hitachi_HDS723020BLA642___MN5220F32EGVEK: 2000,3 GB, 2000398934016 bytes
  255 heads, 63 sectors/track, 243201 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
  Device boot start end blocks Id system
  / dev/Disks/T10. ATA___Hitachi_HDS723020BLA642___MN5220F32EGVEKp1 1 243201 1953511008 + fb VMFS

  The HARD disk that relates to this is the ESXI HDD: MN5220F32ELD3K, with the FAT16 partitions.

  Even when I try to use the LUN with 256 GB in size, I gives me an error: http://img543.imageshack.us/img543/6163/errorsq.PNG

  To me, it looks like the 3 partition - which should be the VMFS partition - has been deleted at some point!

  You can (at your own risk) follow http://kb.vmware.com/kb/1009829 and try to manually recreate the VMFS partition/data store on the system disk.

  André

• The maximum size of the Lun

  Hi people,

  What is the maximum size of the LUN vmfs3 and vmfs5?

  Just to add

  In VMFS 3, you may have a data to 64, but this store will be on does not include more than 2 TB.

  This means that you will use 32 2 TB LUN 1 data store. It is not recommended. 1 LUN. bulk loose any data store.

  Where with VMFS 5 you can creat a TB 64 logic unit number (if storage supports) and do a data store.

  Keep the best ratio of 1:1 = 1LUN per Datastore 1 practice

  For more information, see VMFS 3 vs. VMFS 5

  Please mark this thread as answered in the affirmative indeed.

  I keep coming back to my son without response

• The LUN size limits

  I have a question about the size of the LUN. I'm about to have a provider setup a HP Storage Works modular Smart Array P2000 with 20 discs LFF 450 GB. I'm trying to understand the best way to configure the LUNS to maximize the available space. Can I go with 2 LUNS of 10 discs each who would each LUN 3771 GB each? I'll go with ESXi 5, all guests will be Win 2008 R2 64 bit and I intend to have two servers with about 1 TB of office space and about 15-20 with 150 GB of disk space.

  The maximum size of the LUN, VMFS data warehouses and raw physical devices in ESXi 5 is ~ 64TB.

  You can configure the MSA with the LUN sizes you mentioned. However, it also depends on the workload of computer virtual and if you make a backup with snapshots. I probably go with 3 or 4 LUNs and present them on different controllers.

  I'm not familiar with the MSA, however, you should be able to create a large RAID set several records and cut the LUNS in that RAID, the value instead of creating multiple RAID sets with fewer disks.

  André

• Change the block/file Max size

  When I formatted my storage I accepted the default size of the mã¡XIMUM file and the size of the block. I didn't know this would limit the size of my data stores (I thought it was just the maximum size of a file). Is there anyway to change on the fly, or do I have to all off svmotion and then remove and re-add the storage?

  Thank you.

  Data store/logic unit number would be limited to 2 TB - 512 k in size (through ESX/ESXi 4.1 u1/VMFS 3.x). Depending on the block size, you went with, VMDK files will be limited to a maximum size. As 256Go with a block size of 1 MB. If you need larger files VMDK, then you will need for storage vMotion VM off the LUN/store data, reformat/recreate the LUN/store data, then they go back on it.

  This is part of a proper planning in the way that you set the LUN... If you need to have 500 GB VMDK files, then do not use the block size of 1 MB. Similarly, do not use the size of block 8MB if you have<256GB vmdk="">

• Increase in size of data store ESXi after increasing the size of the LUN

  Hi all

  Scenario is as follows.

  Remote site with Dell r710 ESXi 4.1 servers 2, 1 Dell MD3200i SAN with 12 600 GB drives.

  Initially when I implemented the San, I created 2 LUNS with 1 TB in each LUN.

  Now, we ran into a situation where we have 1 server which is now need more than 1 TB of sapce on it.

  I've reconfigured the table and now have a unit number logic that I spent in 2 TB to 1 TB and I now need to increase the store of data on the ESX Server.

  If I increase the size he reformatted the LUN whole or just the free space that I create?

  I don't want to remove any exisitng s VM on the SAN.

  maximum size of a vmfs is 2 TB-512 b only. extend wouldn't format the LUNS. Look at this blog: http://www.yellow-bricks.com/2009/03/26/resizing-your-vmfs-the-right-way-exploring-the-next-version-of-esxvcenter/

• vmWare vmdk max size of the server

  Hi all

  I'm trying to find what, if any, vmdk size limit is on vmware server 2. The situation is this: we create a virtual machine on an ESX4 computer and import it on vmware Server on Win2k3. I know this isn't a good idea, but it's only for the proof of concept and no production at the moment, ultimate goal should we to a machine in ESX ESX. Now, the reason why I need to figure out what size max vmdk, is that I need a vmdk ~1.5TB. Server documentation mentions a locally created max size of ~ 1 TB, but I can't find any mention of moving a virtual machine server and any restriction of file size it. The 3 2 k machine will be sufficient space via a mounted network drive (assuming that the virtual machine files can live on a Windows network share, but what I saw during the search around I think this part is possible). Yet once, isn't ideal, but it's a game completely temporary.

  The size on the last workstation limit is 950 GB - as much as I know it's the same thing with VMserver.

  Although it is possible to create more great VMDK seem not to be unstable - at least that is my experience during the 2 TB VMDK test in a 2003 VM

  I wouldn't use VMDK more than 950 GB in production

  ___________________________________

  VMX-settings- Workstation FAQ -[MOA-liveCD | http://sanbarrow.com/moa241.html]- VM-infirmary

• Block size for the Lun ReFS

  Hello

  What is the best choice for the creation of LUN disks of ReFS? 512 bytes or 4K bytes? The range is hosted by cluster Windows 2016 Hyper-V virtual machines. Storage are EqualLogic PS6100.

  Thank you

  Hello

  Just if I understand your question, you refer to the volume block size 512 EQL or 4 correct K?   If so, then it is not really important.  There is no difference in performance at the storage level.  Readers are all dissected 512b, volume 4K simply translated between them on the fly.

  What you want to do is set the size of cluster/sector at the level of the file system to 64K.  Which will correspond to the size of distribution on the RAIDsets.  This allows more effective reads/writes, writes in particular.   \

  I hope that answered your question?

  Kind regards

  Don

• How do to the size of the Instance increase for ALBPM-Err: "Max size exceeded instance.

  Hello
  
  Can anyone in how to increase the maximum size of instance for
  1 ALBPM Studio
  2 DURATION or process manager?
  
  Forward to help.
  
  See you soon
  
  The exception in detail is:
  
  The persistence of transaction data error: "Max size exceeded instance.
  Current size is 33262, while the maximum size is 16384. This occurs with the instance 'Termpol1', 'StartExecution [Process1DownloadMessage]' activity of the process ' / Process1Download #Default - 1.0 "
  Details:
  Size of the instance exceeded Max.
  Current size is 33262, while the maximum size is 16384. This occurs with the instance 'Termpol1', 'StartExecution [Process1DownloadMessage]' activity of the process ' / Process1Download #Default - 1, 0'
  fuego.server.exception.MaxInstanceSizeRuntimeException: Max size exceeded instance.
  Current size is 33262, while the maximum size is 16384. This occurs with the instance 'Termpol1', 'StartExecution [Process1DownloadMessage]' activity of the process ' / Process1Download #Default - 1, 0' to fuego.server.ProcInst.getComponentData(ProcInst.java:792) to fuego.server.ProcInst.mustStoreComponent(ProcInst.java:2777) to fuego.server.persistence.jdbc.JdbcProcessInstancePersMgr.executeUpdateInstance(JdbcProcessInstancePersMgr.java:2870) to fuego.server.persistence.jdbc.JdbcProcessInstancePersMgr.updateInstance(JdbcProcessInstancePersMgr.java:2272) to fuego.server.persistence.Persistence.updateProcessInstance(Persistence.java:1008) to fuego.server.execution.EngineExecutionContext.persistInstances(EngineExecutionContext.java:1819) to fuego.server.execution.EngineExecutionContext.persist(EngineExecutionContext.java:1109) to fuego.transaction.TransactionAction.beforeCompletion) (TransactionAction.java:132)) to fuego.connector.ConnectorTransaction.beforeCompletion(ConnectorTransaction.java:685) to fuego.connector.ConnectorTransaction.commit(ConnectorTransaction.java:368) to fuego.transaction.TransactionAction.commit(TransactionAction.java:302) to fuego.transaction.TransactionAction.startBaseTransaction(TransactionAction.java:481) to fuego.transaction.TransactionAction.startTransaction(TransactionAction.java:551) to fuego.transaction.TransactionAction.start(TransactionAction.java:212) to fuego.server.execution.DefaultEngineExecution.executeImmediate(DefaultEngineExecution.java:123) to fuego.server.execution.DefaultEngineExecution.executeAutomaticWork(DefaultEngineExecution.java:63) to fuego.server.execution.EngineExecution.executeAutomaticWork(EngineExecution.java:42) to fuego.server.execution.ToDoItem.executeAutomaticWork(ToDoItem.java:264) to fuego.server.execution.ToDoItem.run(ToDoItem.java:559) to fuego.component.ExecutionThread.processMessage(ExecutionThread.java:773) to fuego.component.ExecutionThread.processBatch(ExecutionThread.java:753) to fuego.component.ExecutionThread.doProcessBatch(ExecutionThread.java:142) to fuego.component.ExecutionThread.doProcessBatch(ExecutionThread.java:134) to fuego.fengine.ToDoQueueThread$ (ToDoQueueThread.java:446) PrincipalWrapper.processBatch to fuego.component.ExecutionThread.work(ExecutionThread.java:837) to fuego.component.ExecutionThread.run(ExecutionThread.java:408)

  First, take a look at your instance variables in your process. Determine if some could be changed to be separated from the instance variables. Once the class of an instance variable passes from "Normal" to "Separated", it is not included in the calculation of instance size.

  If you cannot mark variables as separate, then in Studio's "project Navigator" tab, right mouse click on the name of your project-> click on 'Preferences of engine'-> 'Engine' chosen as the category, click on the tab "Advanced" the top right the 'Instance Maximum size' to 64 KB (4 x the original value of 15 KB) and change the "Instances" Cache to 1250 (1/4 the original value).

  What version of company if you're in (standalone or WLS)? There is a similar setting on the company, but it is slightly different between the two types of engines the company.

  Dan