Size of data store on smaller clusters

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• Block size of data store

  Hello

  First time post and quite new to the product.

  Does anyone know why the option of block size to store data in the client default vSphere to 1 MB in size?  I see in the tutorials and blogs, there are options in the updated section in shape for up to 8 MB?

  Thanks for your help.

  Hello, welcome to the communities.

  Here is some information on the sizes of block VMFS and their constraints;

  VMware KB: Block the size of a VMFS data store limitations

  VMware KB: Frequently asked Questions on VMware vSphere 5.x for VMFS-5

  Don't forget, when you upgrade from an earlier version of VMFS, the block size is preserved. Newly put VMFS-5 data warehouses have a unified 1 MB block size.

  See you soon,.

  Jon

• Add the total size of data store and space remaining

  
  Hi,
  
  What would be the easist way to add the total datastore size and remaining datastore size to the following.
  I do emphasise, esasiest, since I'm as green as can be to powercli, powershell for that matter. I'm trying to learn in babysteps 
  
  

  Get - VM $VM | %{ $_. Name; ($_ | get-datastore | select name). Name}

  At the moment I get day like this, I get to the above.

  DataStoreName (Add info here on DS size?)

  vmname

  DataStoreName (Add info here on DS size?)

  vmname

  ...

  ...

  ...

  Thank you!!

  The $_ represents the object that has been passed through pipeline (the ' |') of the previous cmdlet.

  For example

  Get - VM | %{$_. Name}

  The cmdlet Get - VM will get all the VMs on the servers of vSphere to which you are connected.

  The pipeline ('|) ') said these VM objects one by one to the following code.

  In what is a Foreach-Object (alias is '%') who will send the name of the virtual machine (available in the variable $_) to the default output.

  On a Select-Object cmdlet, you can select properties of the object that was passed through the pipeline, or you can use what is called a "calculated property. Such a calculated property consists of a pair of hash, name (N) and Expression.

  Obviously, name is the name you want to give to this calculated property.

  Expression is the block of code that must be executed.

  For example

  Get-Datastore. Select Name,@{N="CapacityGB; E={$_. CapacityMB/1 KB}}

  All database objects are passed to the Select-Object cmdlet.

  The Select cmdlet displays the name of the data store, and it will display a property called CapcityGB, which displays the ability to store data in GB.

  Notice how the property CapacityMB that is present in the data store object is converted to GB by the code in the Expression block.

  The part of the Expression has not always need to do something with a property of the object that was passed.

  For example

  Get - VM | Select Name, @{N = 'Current time'; E = {Get-Date}}

  In this case the Select-Object cmdlet displays the Name property of the virtual computer object that has been sent.

  And it will display the current time as the propertyname "current time".

  This is an example of a calculated property that has nothing to with the object passed through the pipeline.

  I hope that clarifies the code a bit.

• Problema con Flash y size of data store

  Hola a todos!

  I have a problema y no hay respond to TR.

  Tengo una Máquina con discos in back to back different warehouses, fair el y donde esta el esta en vmx a store of data that allows 512 GB archivos y el segundo disco size of 800 GB lo tengo en data United Nations store as perminte 1024 GB discos, el caso al hacer una instant try me don't dice that no you can. Da el siguente message:

  File < unspecified
  file name > is greater
  that the maximum
  taken size supported by
  data store
  ' < unspecified
  data store >

  no lo entiendo porque yo creia as creaba a fichero delta in each of data warehouses.

  Ah, en el primero me free try 300 GB

  y in el segundo 550 GB free

  He fine con aprovisionado.

  Alguna pista?.

  Gracias.

  Hola Jose, esto no're asi.

  Instant Los is crearan in el directory of the machine, in this case donde tengas el vmx.

  The KB http://kb.vmware.com/kb/1012384you detalla como solucionarlo.

  Puedes mirar también esta KB that you change the ruta por defecto donde alojar los instant como indica.

  http://KB.VMware.com/kb/1002929

  Espero haber sido ayuda.

  Saludos,

• Size of data store for just an OS LUN?

  This seems to be a silly question for me, but the alarm is shake me up.

  If I want to create a data store that is just a LUN for an OS only, what size does?

  For example, in the construction of a Windows Server 2008 R2 machine, I created a LUN on the SAN for just the OS and set it to 50GB.  Then, in vCenter, I add the storage to the ESXi hosts as a data store (lets call it OSLUN).  Then I create a virtual computer and use OSLUN as the hard drive, 40 GB provisioning (think that is all I need).  Now, because I chose 8 GB of RAM, the total of the VMDK ends up being 48Go.  vCenter launches an alert to 'Use of data to drive store' saying 49,75 GB it remains only 1.24 GB.

  It makes any sense to me, except the alarm that makes me think I'm somehow running out of space to store data... should I just ignore this alarm?  I do not see how I'd go on the space allocated for the LUN of the OS.  :\

  Unless you were to store these things on different sets of pins he won't have too much difference. Keep your environment as simple as long as you can. Adding to the complexity when it solves a specific problem not only because you can.

• Size of data store

  I have a dell poweredge 2900 with a 12 to raid 5. OK, I installed esxi. However it is to see the CT 12 but when I try to use it it says only 768 AMS are available. I think that the maximum size is 2 TB for esx and esxi. I was hoping to get esxi build a data store on the raid to the limit of 2 TB. Ideally, I wanted more than one partition on the raid 2 TB. is there any hope here. What is my options to use this server. Im a pretty new on this product and would appreciate some guidance on how to run esxi with this 12 to raid array.

  Thank you mark

  Datastore ESX/ESXi VMFS LUNS must not be greater than 2 to 512 b size... You'll want to use the configuration tools RAID (bios level generally) to carve up the storage falls within these parameters.

  VMware VCP4

  Review the allocation of points for "useful" or "right" answers.

• 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/

• Swapping hard drives for change/increase the size of the data store

  Hello:

  I have an ESXi host 4.1 with 2x146GB RAID1 array (datastore1), 4x300GB RAID5 array (datastore2).  I need more space so I intend to replace 2x146GB by 2x2TB.  I'll first move virtual machines from datastore1 to datastore2, then stop the machine, Exchange records and build the new table.

  • What I need to remove ESXi cfg datastore1. before you physically remove the drives, or will start ESXi gracefully and allow me to remove the data store?
  • I'll be able to add the new data store (2x2TB) to ESXi, ago, i.e. ESXi should see table once initialized on the machine?
  • Existing data warehouses have 1 MB block size max vmdk is 256GB.  I want the new data store to have the block size of 8MB so I can have more VMDK.  I think I can fix the block size of data store when it was created, are, i.e. the ESXi installation can have warehouses of data with different block sizes, are?

  
  

  Thanks a lot for the ideas you have!

  
  

  Bob

  1.) why not just delete the GUI data store before you remove the discs?

  2.) If your controller has the disks properly there should be no problem with their detection.

  3.) Yes, each data store may have a different block size. The block size can be selected when creating the data store on disk/LUN.

  André

• Block size is too small - reformat the data store or create files VMDk 2?

  Hello

  I'm new to VMware and so far I absolutely love everything about her!  Well, I was not too happy when I realized that I can't create more than 256 GB a drive without reformatting the VMFS datastore.   Apparently, I accepted the block size of 1 MB by default during the installation...   I now need to configure a file server with about 500 GB of storage.  The data store with a larger block size (4 MB would be fine for me) reformatting is easy enough?  I am currently working on the first host ESXi 4.1 and will move to set up 2 more hosts in the coming weeks.  I read somewhere on the forum that ESXi 4.0 doesn't let you change the block size by default of 1 MB - is this true or relevant to 4.1?

  Currently, I have only 2 small VMs on that host, and these can be easily saved and put offline for a few hours, if necessary.  When starting the server, I created a single RAID array that holds ESXi and all virtual machines - does that mean that I have to reinstall ESXi in order to increase the size of the block?

  An alternative that I can get to is to simply create 2 255 GB VMDK each and load distribution of storage in the guest operating system (Win 2008).   Performance wise, is a disc more great and better (or worse) than the two smaller disks?

  On a related note, what should I choose for the "Independent" option when you add a new virtual disk?  Default is disabled (not independent).

  Your thoughts, focus and expertise are welcome and will be greatly appreciated!

  Thanks in advance,

  Dothan

  Dothan,

  You should power (after the virtual machine backup) remove the current data store and create a new one with the new block size. I did not have this on ESXi 4.1 again, however, he worked on ESXi 4.0.

  The maximum size of VMDK. If you want ot be able to take pictures, make sure you subtract twice the size of block in GB of the documented maximum size.

  Block size 1 MB--> 254 GB (= 256 GB, 2 GB)

  Block size of 2 MB--> 508 GB (= 512 GB - 4 GB)

  Size of block 4 MB--> GB 1 016 (= 1 024 GB - 8 GB)

  Block size of 8 MB--> GB 2 032 (= 2 048 GB to 16 GB)

  André

  EDIT: Just the KB for the maximum sizes. http://KB.VMware.com/kb/1012384

• How to create a store of data with the small block size

  Hello

  I want to create a data store on two 160 GB drives. All the VI Client allows me to do is to create a data store of whole disc with 1 MB block. But for reasons of performance with the virtualized Oracle RAC, which is 8K organized, I want to go down to a smaller block size. But how?

  Is it possible to split my drive to (lets say) four parts, each with a smaller block size and putting them all together like extends in a data store? To create partitions with fdisk does not work, as the VI Client wants to use the unpartitioned disk. Any ideas?

  Robert

  Hello

  It is not possible. The smallest block size is 1 MB on a VMFS partition.

  Best regards

  Lars Liljeroth

  -

• The data store size is smaller than the virtual disk

  Just deploy a new installation of ESXI 4.1 rev3 on a new Dell PE R520 server with 4 disks 1 GB configured in a single Bay RAID5.  When I connect with vSphere and go to Configuration > it shows storage data store being just 740 GB.  However when I go to storage adapters and select the vmhba it shows the complete 2.73 CT of the RAID array that I need to use.  Nowhere I chose Go 740 for the size of the data store, so I don't know how it has been brought to this size.  If I try to delete and re-create 740 GB is the maximum I can create.

  What I am doing wrong and how do I create a data store that uses all 2.73 CT?  Screenshots are attached.

  Thanks in advance,

  Ben

  4 ESXi does not support LUNS > 2 TB.  Any increase on a multiple of 2 TB, it's what you'll see (e.g. 2.73 TB - 2 TB =.73 to ~ = 740 GB you see).

  But the real question is why you install version 3 year of the hypervisor?

• 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

• VMDK even alert data store size

  Hello

  I'm setting up a VM SQL in a RAID 10 configuration. So I presented the disks to hosts and created a 1 TB data store (the full disk size)

  When I create the thick VM with the same size of the vCenter database start alerting on the data store space.

  What can I do to stop the alert in the data store, because it will be used only by SQL

  Thank you

  It allows to disable all actions call for this specific data store, so not the time vCenter.

  Make sure that you are in the correct view "Home-> inventory-> data warehouses and the cluster data store.

  If you are in the host and clusters, you can disable alarms on this specifc SQL VM.

• The current block size for a store of data in VMFS3 is 4 MB. Must upgrade thedatastore to VMFS5 and wants to change the block size of 1 MB

  The current block size for a store of data in VMFS3 is 4 MB. Must upgrade thedatastore to VMFS5 and wants to change the block size of 1 MB

  help me on this

  Create a new data store VMFS5 with a block size of 1 MB. Migrate all virtual machines store data to the new data store, and then delete the VMFS3 data store.

• How to find clusters of data store for compute cluster?

  I used PowerCLI script calls within a rest service.  The rest service is spent a bunch of new applications of construction of virtual machine data.  For the deployment, the only data (relevant to this question), I'm getting is the vcenter server and the name of the compute cluster.  I need to find a way to determine which cluster of data store to deploy virtual computer by using the name of the compute cluster.  If I do a get-cluster $clustername | FL * I see no correlation between the computer cluster and the cluster data store.

  If I get info on a VM (get-vmhost $vmhost) host in a cluster, I see the datastoreIDlist as a property of the object VMhost and can see the warehouses of data (not datastoreclusters) facing it.  Which is not ideal, but it might be doable.

  I know there is a relationship between compute clusters and storage that is presented in vcenter.  Why can't I find that in powercli?

  Get-Cluster ClusterInQuestion | Get-VMHost | Get-datastore. Get-datastorecluster