Maximum VMs per VMFS datastore

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• Create a new VMFS datastore

  Hi guys,.

  You have a few examples or a simple way on the creation of a new VMFS datastore using Orchestrator?

  Thank you.

  Hello

  check the "Create vmfs for all available disks" workflow in Library / vCenter / storage.

  It contains a logical example creating VMFS data warehouses, you should be able to adopt it for specific volumes.

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• Cannot add VMFS datastore to ESXi host

  Hi all

  I have a problem with the CF 1 logical unit number which can be seen as a device through several paths on all 10 hosts in a cluster, but it appear as a data store VMFS on 6 of the hosts. Other LUNS of the same Bay appear correctly on all hosts. 10 guests see the LUN with the same LUN ID and all hosts are identical regarding the version of ESXi (5.0 Update 2), HBA and firmware models.

  On the 4 hosts who can see the device but not the VMFS data store, it seems that he sees the LUN as a snapshot: 'list of snapshot storage vmfs esxcli' translates into:

  4f5e5cbb-a87cd2c6-86e9-d8d385f98034
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  Can mount: true
  Reason of mountability-United Nations:
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  Reason for non-resignaturability: the volume is actively used
  County of measure pending: 1

  The UUID VMFS above matches the UUID VMFS seen on 6 guests who can see the VMFS data store.

  When I try to use 'Add storage', the device appears with a lambel VMFS: LUN101_SAS2(head). I don't know why (head) was added to the label of VMFS. Oscreen n the following signature to keep 'existing' and "Assign a new signature" options are grayed out. The only option is "Disc Format. I need to keep the existing signature because it run virtual machines that have their files .vmx and hard on this LUN.

  Would the fact that I have virtual machines running on this LUN, I cannot choose the option to "keep the existing signature?

  I need to Storage vMotion these virtual machines to a different LUN before I add the VMFS datastore to 4 guests?

  TIA

  Hey RoscoT;

  Try the following command

  #esxcfg - volume - l

  This should show the volume

  To constantly increase the volume, use esxcfg-volume - M followed of the UUID or volume name

  Concerning

  one

• Cannot extend VMFS datastore

  Mary!

  I have a virtual machine with two partitions. Partition for the system (IDE) and (SCSI) partition for data. The partition of SCSI has there own underlying the LUN on a storage. LUN capacity was 50 GB where the VMFS data store uses almost the full ability of LUN (49, 75GB). So I developed the LUN on the storage of 60 GB and now I want to extend the data on this LUN VMFS store and add a few more GB. But although I can see the raw capacity (60 GB) of the LUN in storage/properties for this VMFS datastore I can't expad the datastore to VMFS himself. When I click on expand I get no device/LUN to use.

  Any suggestions?

  And my main goal is to expand the data store VMFS.

  It's exactly what I got. When you log on to an ESXi host (using the vSphere Client and the root user), you will have the same storage Wizard dialog box as in the screen shot you posted before. After logging in, go to 'Configuration'-> 'Storage', select the datatstore VMFS, you want to develop and run the wizard.

  André

• Failed to create full-size VMFS Datastore on large virtual disk on Dell R710 5 2 t + 1, Raid 5 PERC6i controller

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  After installing ESXi4, I found only 2 created Datastore: 2. 39 GB 1 Datastore and 1 TB data store no data store has been created on the VD 2.6 TB.

  I tried to create it manually, but I found that only 635 GB in size can be created on this 2.6 t. Why? As I remembered ESXi4 can support up to 64 TB VMFS Datastore.

  The BIOS is 1.0.4.

  Someone had the idea?

  Take a look at this "vSphere and 2 TB LUN has changed VI3.x.

  http://virtualgeek.typepad.com/virtual_geek/2009/06/vSphere-and-2TB-LUNs-changes-from-vi3x.html

  Oh, a data store to 64 would consist of 32 degrees to ~ 2 TB. The limit on the size of the LUN behind the data store is 512 b less than 2 TB

• VMFS datastore and advised LUN (IO queue)?

  Hello

  I have a few quick questions regarding best practices SAN LUNS and VMFS data warehouses.

  Assumptions:

  1 iSCSI SAN (single storage processor)

  2. 2 disk pools (2 x RAID5 @ 3 discs/RAID5)

  3 4 LUNS (LUN/Disk 2 pool)

  4 LUN size: 500 GB/LUN for a toal of 2 TB of storage

  Question:

  1. on what data store VMs would have a larger disk performance?

  A. Datastore1 created on LUN0 on disk pool 1 and Datastore2 on LUN1 on disk pool OR 1

  B. Datastore1 created the LUN0 on disk pool 1 and Datastore2 created the LUN0 on disc 2 of pool?

  I guess what I'm trying to ask here is to have LUNS on clusters of separate drives faster than to have all the LUNS on the same disk pool? If A VM hard exists on Datastore1 of B above, setting hard of VM B on Datastore2 of B above would improve the overall performance for both virtual machines? On the other hand, respectively, capping A VM and hard of B VM on Datastore1 and Datastore2, of A above still an effective option? This brings me to question 2.

  2 - is data on separate warehouses LUN fracture the queue of e/s of SAN LUNS on all LUNS? In other words, the SAN will access all LUNS at the same time, thereby increasing the performance vs having all VMs on a single LUN shared with a single e/s queue?

  Thank you

  Steve

  In General, you're trading the guaranteed 90 IOPS / sec per IOPS VMDK / s maximum 180, but shared between 2 VMDK.

  This seems to be an entirely theoretical question and sometimes almost philosophical, whether for trade this broad for this.

  If you think about it more later, it is quite similar to place vCPUs and VMs on ESX host - is it better to share some CPU more Rapids (= more expensive systems) or gives a processor dedicated Basic (= more material)?

  If I stick my neck, I would say that the difference between the aforementioned buildings is visible only marginally and you could probably be very happy with a flat 6 pin R5 datastore as well.

  But the specific difference between 2 R1s and an A10 with 2 LUNS or even a R10 with 1 LUN but 2 VMDK worth thinking.

  As I've already said:

  If speed and performance is a problem (MSSQL IOPS requirements) then you're already wrong with the SATAs and plan instead to study in an array of more powerful than to try to get the last bits of your SATAs.

  Don't get me wrong, surely SATA can do miracles in the small environment, but especially if I notice a 50 GB DB MSSQL for P2V I would first collect some perfmon data and plan my storage as a result even more than I would normally do in SMB environments.

  You will not get a PRIUS to take the load of a SUV, no matter how long and diligent, you plan to distribute the load.

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

  I know that this issue has much spoken in the forums, but the answers are always to make sure that your block sizes are set to 8 MB - mine are already. Let me explain:

  I have a virtual machine with a large amount of connected storage - something along the lines of discs 10 x 1.99 to. Sit all VMDK on partitions of the VMFS of 8 MB of size block, including the configuration of the VM (location of the pagefile).

  Every time I try and snapshot of the virtual machine, I see the "< unspecified file name > file is larger than the maximum size supported by the data store ' < unspecified datastore >. All other virtual machines instant fine, but any other VM has a similar amount of storage as the VM problem.

  I have now moved the configuration files of the virtual machine to a new partition VMFS 5 of 1.91 TB, but the instant error persists. Most of the readers is sitting on VMFS 3.33 or 3.46. It will take me a while to move all VMFS 5 to see if that solves the problem.

  VMware.log for VM reports:

  2011-10-09T09:55:55.328Z| vcpu-0|  DiskLibCreateCustom: Unsupported disk capacity or disk capacity (2186928627712 bytes) is too large for vmfs file size.
  2011-10-09T09:55:55.328Z| vcpu-0| DISKLIB-LIB   : Failed to create link: The destination file system does not support large files (12)
  2011-10-09T09:55:55.328Z| vcpu-0| SNAPSHOT: SnapshotBranchDisk: Failed to branch disk: '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2.vmdk' -> '/vmfs/volumes/4dc30ba3-b13c5026-92d8-d485643a1de4/spoon-app/spoon-app_2-000001.vmdk' : The destination file system does not support large files (12)
  
  

  My VMDK and volumes are smaller than 2032GB. I don't understand why, it's be a problem.

  Anyone have any ideas?

  Although ESXi 5 supports larger LUN as a raw physical devices (up to 64 TB), the maximum size of a virtual disk has not yet changed.

  André

• PowerCLI script for VMFS datastore list with ID NAA and latency?

  Hi all

  Can anyone here please share a script, or help me to change the PowerCLI to display the store name of VMFS data, capacity and NAA.ID and latency in the past 24 hours?

  So far I can only use the WHowe script below:

  $esxName = "PRODESXi10".

  SE PRODVCENTER01-connect-VIServer-Server "VM".

  New-VIProperty-name lunDatastoreName - ObjectType ScsiLun-Value {}

  Param ($LUN)

  $ds = $lun. VMHost.ExtensionData.Datastore | % {Get-view $_} | `

  where {$_.} Summary.Type - eq "VMFS" - and

  (_.Info.Vmfs.Extent $ |) where {$_.} DiskName - eq $lun. CanonicalName})}

  {if ($DS)}

  $ds. Name

  }

  } - Force | Out-Null

  Get-VMHost-name $esxName | Get-ScsiLun | Select CanonicalName, CapacityMB, lunDatastoreName

  Thanks in advance,

  But you easily add a timestamp.

  Get-Datastore.

  Select Name,

  @{N = "DateTime"; E = {Get-DateTime}},

  @{N = "CanonicalName"; E = {$_.ExtensionData.Info.Vmfs.Extent [0].} DiskName}},

  @{N = 'Latency'; E = {}

  $esx = @(get-View-Id $_.) ExtensionData.Host.Key | Get - VIObjectByVIView)

  $instance = $_.ExtensionData.Info.Vmfs.Uuid

  $stat = 'datastore.totalReadLatency.average ','datastore.totalWriteLatency.average '.

  $stats = get-Stat-entity $esx - Stat $stat - Realtime - MaxSamples 1 - Instance $instance

  ($stats |) Measure-object-property - average value. Select - ExpandProperty average) /($esx.) Count * 2)

  }}

• VMFS Datastore 3.33 more than 2 TB?

  I was wondering if I could spend my store of data from more than 2 TB which is a VMFS, block of 4mg 3.33.

  Thank you

  The maximum size of data store can be up to 64, but you'll need multiple 2 TB LUNS and add them as extensions. Keep in mind that with 4 MB block, the maximum file size is 1 TB. Another option is if you are running vSphere ESXi 5.x, you can install the VMFS version 5 and take advantage of larger size of the LUN with VMDK support, anyway if you are in this case, I recommend you create a new data store and migrate the old data store data.

• Cannot resize VMFS DataStore in ESXi 5.1

  All,

  I use a network SAN OpenFiler as a VMWare Datastore.  The current size of the data store was 1 TB and I decided to increase the size of the LUN via OpenFiler to 2 TB.  However, this increase in the logic unit number size is not reflected in the VMWare Datastore and I cannot increase (extend) the size of the existing data store.  I seem to be affected by the same problem as described here:

  VMWARE: Cannot expand / increase Datastore VMFS on ESX

  Any ideas on how to increase the size of the data store in ESXi?

  Thank you.

  Then, it might be a problem of presentation. try not represented this LUN from the storage host and re group - present.

  Ensure that the data store is dismounted and detached from everything first.

  Thank you
  Avinash

• Maximum cores per CPU - VMWare Essentials

  Hello everyone,

  We bought Vsphere Essentials Plus and installed on 2 hosts, processor Intel 2 1 4 - cores and a processor AMD Opteron 2 6 - cores. Since none of the CPUs exceed 6 hearts, I expected to be able to use more than 1 server with 2 processors, but the system will report that we used all possible processors.

  2 screenshots attached

  The number of nuclei can we have for 1 CPU: maximum 6, most often identified, or less than 6, also sometimes found?

  Thank you for your help

  Michel Verhaeghe

  Opterons have you are 12 cores per socket, so they use 2 licenses each.

  ---

  MCITP: SA + WILL, VMware vExpert, VCP 3/4

  http://blog.vadmin.ru

• VMs per LUN

  Good evening

  <! [endif] > <! [if gte mso 9] >

  Today, I had

  a specialist of the virtual machine in my company telling me I should have 1 VM per LUN or

  Otherwise, the performance would be poor. I told him that it was impossible and the

  Another suggestion was to have all the VMS each running on an ESX host LUN. I ask

  him how I could do that without jeopardizing the DRS and I didn't get any answer.

  1^st

  -Is it true?

  <! [endif] > <! [if gte mso 9] > 2^nd

  -What to do

  best practices in question are to know that my company has no HARD drive

  space for waste and my storage is basic fiber (CX3-10 DELL)?

  Filipe Pinto, D. C.

  I want to say can I consolidate all virtual machines of a lun to a single host?

  If you are using a shared storage and relying on the DRS and HA, then you will have all the shared storage as LUN presented to the whole of your ESX hosts.  He didn't need to be any kind of an ESX host to a LUN relationship.  You might have a host with 5 LUN or share of 5 ESX host with a logic unit number.  The general idea is to split the charges between hosts and LUNS - there are many different ways to do this.

  Is it true that performance degrades if on 1 lun I have has 2 vm, a run on host 1 and host 2? Is that creates any kind of locks?

  Basically, that a single ESX host never would have one virtual machine files open at any time.  Seeing her and access are two different things here.  See p.6 of the Study of scalable storage Performance for information on SCSI reservations and how they are treated.

• Maximum possible value for the Maximum files per virtual folder

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  Could if it you please let me know the maximum number that can be specified for input config 'Files per virtual folder'.
  
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  Hello

  This limitation has been abolished with with framework files.

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