Server Fault Stack Exchange
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Questions tagged [vmfs]

42 questions
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Is there a way to check to see if your VMFS partitions are aligned on storage?

I'm running ESX 3.5 currently, and about to set up 4.0 on a new HP EVA4400. Once the servers running 4.0 are up, I'll be migrating all of the 3.5 VMs over to the new datastores using Storage vMotion and then regular vMotion to get them on the 4.0…
John
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VMware ESXi extremely slow Virtual disk performance compared to RDM

I have a ESXi 5.5 server running with a FC SAN. The FC san is created using an openfiler OS with software RAID and exported with the qlatgt driver. Direct writes to this SAN when no VMFS is used work fine at full speed (>100MB/s). Virtual machines…
Jeffrey
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Can't mount mount vmfs disk in debian 6 using vmfs-fuse, VMFS unsupported version 5

I have a problem with my server. I recently replaced ESXi for Linux Debian, and i want to mount my second disk on my debian installation using vmfs-fuse. I already installed the vmfs-fuse package, and tested is but did not work. I'm trying to mount…
Dean E
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ESXi 5.1 local datastore no longer accessable

I'm running ESXi and just recently rebuilt a raid array, and now an existing local datastore is no longer accessable in ESXi. The details: Original Configuration: 1x usb drive (on the backplane) containing esxi 5.1 install. 2x local SAS drives in…
xelco52
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Adding storage to ESXi host

We have two hosts running VMWare ESXi 4.1. Both are connected to a RAID 5 array via iSCSI. We added three more disks to the RAID array. Now I need to assign the new storage somehow to the ESXi hosts. Right now we have one VMFS 3.46 datastore that…
Sven
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What is the largest VMware ESXi 5 guest vm disk size (and how to set it up)?

Is it possible to set up a guest virtual machine with larger than a 2TB drive? For example, from what I read, the largest VMFS size is 2TB. If I have 3 TB VMFS set up on the host ESXi server, how can I create a 4 or 6 TB drive for the virtual…
Scott Szretter
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NTFS recovery after installing ESXi

I got this server where I had a Windows 2003 installation on, and I didn't think I needed it anymore, so I desided to install ESXi on it for testing purpose. But now I just found out that there where some important files on the disk !! Anyone know…
Lasse Gaardsholt
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esx4 vmfs3 raid rebuild

I have a ESX 4.1 Server with a storage on RAID 60. After the rebuilding of the RAID the vmdk-files are not working in my VM. On starting VM I have this error: Cannot open the disk…
fatumator
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what are VMware P2V dynamic disk best practices?

We are trying to figure out the best way to do a P2V on one of our main file servers (windows server 2003). Currently the server is physical with an MD1000 hard drive array attached through scsi, we have about 2.5TB of data, on the data volume of…
Peter
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ESXi 3.5 Corrupted (flat & delta) vmdk files

Today, I found that one of my VM hosted in ESXi 3.5 cannot be started, the error in /var/log/messages was Mar 14 00:56:21 vmkernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } Mar 14 00:56:21 vmkernel: hda: dma_intr: error=0x40 {…
James
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howto access esx filesystem

need to copy VM files (vmdk etc) to usb disk for backup purposes. tried booting with partedmagic 4.9..but cannot access the vm files on disk. any thoughts?
JMS77
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How can i create a VMFS datastore on an ESX 3.5 after ESX installation

I have an ESX 3.5. After adding it to the VC i was getting an error message "The VMware ESX doesnot have a persistent storage". I think its because the VMFS partition has not been created during the ESX installation. Is there a way by which i can…
thincit
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Retrieve data from an HD with vmfs partition

My problem is the following: I have a 1TB HDD with the information of a server that I need now. I do not know what to do to access the information, inside the HDD there is a vmfs formatted partition that I do not see, and it contains the data I…
Yeison Iguaran
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Used disk space in ESXi and OS are wildly different

I am running ESXi 6.5u1 on my server and I have a VM with a thin provision with a max size of 128gb and the VM is reporting having a used space of about 4gb but ESXi is provisioning more than 64gb to the virtual hard drive. I have tried defragging…
Desultory
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VMWare - VMFS file system corruption "Failed to check fbb.sf"

I have a server running ESXi 5.5 hosting several VMs. The host has 2 datastores, one within the local disk, one on an external SAN. Suddenly we had a problem and restarting the server we were not able anymore to map the internal datastore (it was…
kuma
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