Block size of a VMFS data store limitations

Similar Questions

• Size = size of the VMFS data store VMDK?

  Is it possible to create a single vmdk equal to the size of a vmfs data store he created in or is it a load element used by vCenter/ESXi.

  I am using vSphere 4 and VMFS data warehouses are in format VMFS 3.33.

  You can't if it is the main drive of a virtual machine and the virtual machine configuration files etc receive on the same data store as the virtual machine directly to the output that the bat will need extra space for a brief amount. For a data reader, this should be possible since there should not be any files will use the space.

• < unspecified file name > is greater than the taken maximum size supported by the data store ' < indeterminate datastore >

  Hello

  I made a mistake.

  Block size was set at 2 MB, vmdisk 500 GB value has tried to bring to 600, do you have a message that it was not possible. VMDK was set to 512 GB after that operation is completed. The server is Windows 2003. the 11 additional GB, which is not allowed is visible to the guest OS. But I have not developed the partion with diskpart.

  The problem is that this snapshot of the operation failed. This is an easy way to decrease the vmdk to the original size of 500 GB (if possible without turning off). Without destroying the files.

  Thank you very much

  Solution 1 works if you have a second data store with the appropriate block size (4 or 8 MB)

  Solution 2 - as you said - requires additional disk space and stop times

  A possible solution (3) would be an upgrade to vSphere 5 allowing - after the upgrade of VMFS-5 data store - virtual disks with up to 2 TB less 512octets regardless of the size of block that exists. However, you must ensure vcenter Server as well as guests, access to the database are upgraded before the upgrade of VMFS data store. Also make sure that any 3rd party applications (eg backup) you use, support vSphere 5.

  Since you mention a LUN to Solution 2, I assume you are using a shared storage. You do not have the opportunity to present a different LUN for guests, that you could get in shape with the block of adequate size and then cold migrate the virtual machine to it?

  André

• promotion of iSCSI LUN with the VMFS data store

  Hello

  I moved an iSCSI on the website of DR SAN and fact volume so that it was accessible to the ESX host on the site of DR based on the IP address and made the new analysis of the adapter for iSCSI Software in the VI Client on the two hosts on the DR site and he discovered the LUN.

  I don't want to go to the Configuration, storage and add storage as this reformatted the volume and it has a VMware Server already on it running happily on the main site.

  How can I add the volume as a VMFS data store available on the two hosts as he is picked up automatically?

  Thank you

  Paul

  I guess it was a VMFS volume that was used by the ESX environment on main site you, Yes? If you have moved the LUN, i.e. the ESX hosts in the main site no longer have access so that the ESX host at the DR site do not have access, you will need to define EnableResignature = 1 under Advanced settings, LVM

  You restart the analysis for storage and you should access your VMFS volume. You will need to register your virtual machines with the new host.

  When complete set EnableResignature = 0

• < Unspecified file name > file is larger than the maximum size supported by the data store ' < indeterminate datastore >

  Hello

  I use vSphere4 and I'm having problems, create snapshots of virtual machines.  I get the following error when I try and take a snapshot...

  File & lt; filename not specified & gt; is larger that the maximum size supported by the store data "& lt; not stated the store data & gt;

  If I check all disks assigned to the virtual machine, the block sizes are ok.  All the disks are of block size of 1 MB and less 60GB, except one that is 600GB and a 4 MB block size.  There are also free space on each data store with being less 5,30 Go which I guess should be much more than enough to create a snapshot.

  In addition, whenever I try and create a snapshot, it creates a file called SERVER - Snapshot1.vmsn, 2, 3, 4 etc. on the main data store.

  Is it possible that because of the single disc of 600 GB, VMware prevents me from taking a snapshot?

  Here is the config...

  See the attached file for disk configuration information.  Operating system drive is the drive where the snapshots are created.

  Basic disks refers to all disks assigned to the virtual machine. Given that, by default, the snapshot is stored the vmx file, this data store should be able to potentially create a VMDK your largest disk size, assuming that you change every block in the vmdk.

  In your case, it should support a snapshot that can potentially reach 600 GB to one of your drives, and so needs a block of size on the VMFS volume to support this. You can redirect the snapshots to another logic unit number and so to work around this problem (Storage VMotion is another option) limitation.

  Trust, this clears up a little.

• Remove a VMFS data store or disassemble and remove the

  All,

  I need your help in this matter. I have 55 shops of VMFS 3 data that I want to go to VMFS5. I want to take advantage of the block size of 1 MB, so I need to delete the database and then recreate and format it with the size of the block vmfs5 1 mb

  question:

  Make a right click data store, delete, recreate

  or

  Follow the instructions on Ko 2004605 States to take it apart, then detach.

  Hello

  Yes, you must follow the 2004605 Ko, so that it doesn't create a situation of ODA on ESXI host, which can lead to unstable ESXi host.

  Concerning

  Mohammed

• How to increase the size of the iSCSI data store?

  I try to add an iomega StorCenter as an iSCSI target.  I added the storage card which indicates the total capacity of 8,13 TB in vSphere Client (it looks like the right size).  Now when I add the data store, however, is that there only 128,75 GB of capacity (this is where the problem).  How can I recover the full space available?  It's almost as if I need to increase size of partition or something, but I don't know how to do this.

  Also, if I click on the data store > properties, the increase... button opens a dialog box, but there is nothing for me to choose.

  System / / desc:

  ESXi 4.0

  3.33 VMFS datastore file format

  Max file size: 256 GB

  Block size: 1 MB

  (This does not have room for the VDR backups)

  Welcome to the community - ESX 4 only supports storage of 2 TB - 512 B data - you will need to carve up the storage being presented in LUNS which are smaller than 2 TB - 512b

• VMX file larger than the maximum size supported by the data store

  Hi all

  I seem to be getting a strange error trying to a virtual machine that is located on a snapshot VMFS5, to the data store format.

  The virtual machine (VMDK and VMX file) is installed on a thin provisioned 2 TB datastore which has the value VMFS5 formatting.  It is a data store new with no other VM on it.  I had problems in the past with the datastore block sizes (1 MB, 2 MB, 4 MB, 8 MB on VMFS3), however, I thought that VMFS5 got rid of the question, since it's all blocks of 1 MB and all files in the virtual computer are on the same data store.

  The error I get indicates that the VMX file is too large for the data store (used Im saying "unspecified file), however, if I do the independent 2 TB disk snapshots through the fine.  The virtual machine has two virtual disks, a 50 VMDK of GB and a thin 2 TB VMDK (200 GB used).  I tried fast vMotioning the VMDK and VMX to other data formatted VMFS5 stores and still get the same error.

  I'd appreciate any help and ideas.

  Thank you

  Travis

  Although the block size limit is party, maximum 2 TB file size less 512octets still exists. Since a Flash disk can grow waist put in service the basic disk more overhead for the metadata, the maximum size of virtual disk - to be able to create snapshots - is 2032 GB.

  See "calculation time system required by the snapshot files" at http://kb.vmware.com/kb/1012384

  André

• external data store limits question

  My question is the storage of 2 TB limit apply to external storage as I san iscsi or nfs storage

  Ty brand

  Hello.

  Yes, the limit of 2 TB for a data store applies to iSCSI San.  NFS contain VMFS volumes, so it does not apply, but size VMDK max always applies to NFS volumes.

  Good luck!

• Error: snapshot file < uspecified filename > is greater than th emaximum size supported by the data store

  I get the following error.

  File & lt; uspecified filename & gt; is superior to th emaximum supported by the data store

  My vm is 1024 GB, my block size is 4 MB and I 5.05 TB of free space.  The navigation data store, I see that there is a snapshot file incomplete 2gigs in size. I made snapshots to create in a different location from http://kb.vmware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1002929 but still the same problem. Thanks for any help

  The virtual disk is too large to create a snapshot on a 4MB block size data store. The maximum size of VMDK is 1,016 Go.

  See "calculation time system required by the snapshot files" in http://kb.vmware.com/kb/1012384

  André

• LOST or CORRUPT VMFS (data store)

  Hello

  strange symptoms, when saving comments via the network on the NAS Server freeze.

  No disk error, allow to manage but no o off not restart guest system.

  Restart Vmware (4.0.0 261974 on HP DL380G4 - Smart Array 6i) and Datastore disappeared!

  No errors on the disc,

  2 disk raid 6i, a RAID 1 OK (36 GB X 2) a RAID 5 (146 X 3) ok ok but this data store is gone!

  On the storage card, I see 'Vmware disk Local (mpx.vmhba1:C0:T1:L0) but no data store '.

  No vmfs or another partition...

  I try this solution:

  -Rescan store, but not reassign datastore

  -Rescan with change EnableResignature and disable DiallowSnapshotLun.

  A lot of help via the forum vmware or google:

  http://communities.VMware.com/thread/247293

  http://communities.VMware.com/message/1477368#1477368

  http://www.virtualizationteam.com/virtualization-VMware/VMware-VI3-virtualization-VMware/VMware-ESX-how-to-recover-your-VMFS-partition-table.html

  and many other, but no solution.

  in/dev/disks I see

  MPX.vmhba1:C0:T1:l0

  But if fdisk /dev/disks/mpx.vmhba1:C0:T1:L0 answer me

  Fdisk: can't read /dev/disks/mpx.vmhba1:C0:T1:L0

  I'm trying to suggest to the KB 1009829 and esxcfg-scsidevs - c see my unrecognized store

  but fdisk my same error response:

  Fdisk: can't read /dev/disks/mpx.vmhba1:C0:T1:L0

  If I try /dev/disks/mpx.vmhba1 response is

  Fdisk: cannot open of /dev/disks/mpx.vmhba1

  I guess that the syntax is correct, because if I put another store (C0:T0:L0) I get the correct message

  fdisk-l don't see C0:T1:L0

  in other KB (1008886) suggest me to use parted, but console vmware 4 do not have this command! I tried partedUtil and I see this:

  partedUtil get /dev/disks/mpx.vmhba1:C0:T1:L0

  35697 255 63 573480304

  What is - this? change this? which?

  I have download parted (gnu) but everything installed try I get "configure: Permission denied ' suggest?

  I try KB (1009565)

  and I get this:

  ~ # vmkfstools Pei /dev/disks/mpx.vmhba1\:C0\:T1\:L0

  devfs-1 file system, spanning partitions 0 00.

  File system label (if applicable):

  Mode: private

  Capacity 398563991040 (blocks of files 778445295 * 512), 398563991040 (778445295 blocks) prevail

  UUID: 00000000-00000000-0000-000000000000

  Partitions split (on "notDCS"):

  No UID e NO value from partition

  I try KB (1002281)

  but fdisk 'can not read... ". »

  Please help with suggest another way...

  Thank you!

  There is a road to try to recover partition?

  That's why I suggested to run the ACU. To check the controller has all the problems and presents the logical volume properly to the operating system.

  André

• File is greater than the maximum size supported by the data store "Datastore1".

  Okay, I'm trying to create a virtual machine from 350 GB.  I need to run a database of 283 GB to test / Proof of concept that will grow more than 325 GB. I get this error message

  -

  ---

  Error

  -

  ---

  File is larger than the maximum size supported by datastore 'Datastore '.  vm name.domain.com/server name.domain.com.vmdk

  -

  ---

  Ok

  -

  ---

  I have read that I need to increase the size of the block, but I need to remove the data store. Is it the same on ESXi 4.0?  I have 4 other VM about 150 GB. Please tell me I'm wrong.  Please...

  Same rules apply.  Create an another LUN with the correct block size and away files or hang the lun and recreate

  Steve Beaver

  VMware communities user moderator

  VMware vExpert 2009

  ====

  Co-author of "VMware ESX Essentials in the data center" virtual

  (ISBN:1420070274) Auerbach

  Come and see my blog: www.theVirtualBlackHole.com

  Come follow me on twitter http://www.twitter.com/sbeaver

  *Virtualization is a journey, not a project. *

• Nobody knows the largest available space supported for vmfs data store when creating a new form of vmfs data store a 3T lun mapped from FC storage.

  I traced a form of lun 3 t FC storage.

  And the project to create a vmfs on this lun, creating, data store, space available by default is 1024 G, no 3 t, so I guess that maybe some limitations.

  Anyone know? Thank you very much.

  Hello

  The limit is 2 TB - 512Bytes

  That 512 bytes is VERY important to remember.

  You will see that 1 TB as it roles once you exceed 2 tablespoons.

  As Anton suggested you can use two 1.5 TB LUN safely. However, you can in fact more than 500 GB LUNS or such. Will the LARGEST you can is not always the most efficient allocation of resources.

  Best regards

  Edward L. Haletky VMware communities user moderator, VMware vExpert 2009, url = http://www.virtualizationpractice.comvirtualization practical analyst [url]
  "Now available: url = http://www.astroarch.com/wiki/index.php/VMware_Virtual_Infrastructure_Security' VMware vSphere (TM) and Virtual Infrastructure Security: securing the virtual environment ' [url]
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• Snapshot error (.. is larger than the maximum size supported by the data store)

  Hello

  I have a standalone DL360G5 with local storage. I have about 1.1 TB of storage (free in storage 1 TB)

  I have a virtual machine that is configured with a provisioning (256 GB of storage) which is currently 14 GB. He should get a site off backup server.

  When you take a snapshot of the next error message.

  'File '.

  The error message doesn't make sense because it takes only 14 GB of storage, and since I'm more Quen free 1 TB of storage should not be any problem.

  Someone knows how to solve this problem or to get a work around for a snapshot?

  Thank you

  I think that you will need to reformat the data with a block size store. By default, the maximum is 256GB. Slim doesn't help here as a snapshot could grow beyond.

• VM shows this in the NFS data store after passed to the vmfs data store

  Hello

  (1) create a virtual machine using NFS datastore

  (2) had created a few snapshots

  (3) to migrate this virtual machine from the data to the local VMfs store

  (4) all the files are moved to the defined vmfs datastore

  (5) storage > > nfs_datastore > > objects > > VM > > vm is present

  (6) but when did change the setting of this VM, vm is present on the data store local vmfs

  The .vmsn file contains binary data text, so you better not change it manually. The purpose of these files is to be able to return to his instant partner. Depending on the configuration of virtual machines in time you created the snapshot, the virtual machine may require access to the old data store to access the files and folders in there when you return to this snapshot.

  André