Error when adding datastore in VMware ESXI 5

Hello Experts,

I just installed VMware's ESXi 5.0 on a new server of ours. I also made sure the Hardware and Raid controller was compatible before purchasing. I installed the Hypervisor on a flash drive and am planning on using the Raid Controller for the datastore.

Raid info:
RAID 10
PERC 6/i SAS internal RAID adapter, PCI-Express

The storage shows up under devices and everything looks fine.(See devices.jpg)
snapshot of Esxi resources
When I try to add it to a datastore I get this error:

"The operation failed because the specified directory path is incorrect."

Recent Task:
Create VMFS datastore
xxx.xx.xx.xx
A specified
parameter
was not
correct.  
root
9/15/2011 10:04:50 AM
9/15/2011 10:04:50 AM
9/15/2011 10:04:50 AM

I have several esxi host and this is the first time I have seen this problem and google isn't helping. Can someone help me figure this out?
LVL 3
mlsbravesAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It's possibly because it already has a partition on it. (all the other versions do this if there is a partition on the disk!)

Remove the partition with GPartED Live CDROM.
Download Gparted Live CDROM (http://gparted.sourceforge.net/livecd.php.

or Scrub the disks, if you have that option on the RAID controller.
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mlsbravesAuthor Commented:
This is a remote server which I can access through the iDRAC6 Management card. I do believe I can mount a local cd and boot from it, I will have to check. Is there a reason a partition already exist on the new server? No OS was shipped with it so unless it is used for something else I don't understand. I just don't want to remove a partition before knowing it doesn't effect anything.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I have no idea, but if you look at the screenshot, it believes there is a Win 95 FAT32 2GB partition on the RAID array.

The only way of checking is using another disk manager.

Were the disks new?

It's certainly not an ESXi 5.0 partition.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You could also check with fdisk at the console, but sometimes, it's difficult to "nuke" a partition whilst ESXi is memory resident.
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mlsbravesAuthor Commented:
Yes this is a brand new server from Dell.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Check with Gparted Live CDROM
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mlsbravesAuthor Commented:
gparted display
So there's two partitions.

DellUtility & 2gb fat32.
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jackiechen858Commented:
http://communities.vmware.com/message/1818191

so hanccoka's solution should work, just delete the two Dell partition. partition type 0xde is Dell recovery partition.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, okay, so you've got a Dell Management partition, Fat 16 and Fat32 OS partition.

Remove them both, and clear the disk.
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mlsbravesAuthor Commented:
Deleted both partitionsI deleted both partitions but I still am getting the same error:
 Still recieving same error
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Escalate and Open an SR with VMware Support.
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mlsbravesAuthor Commented:
Don't have support right now. I was able to finally figure it out. I didn't think it would matter if I renamed the name of the device. But apparently it does. I right clicked the device and selected "Copy identifier to clipboard" and pasted this as the name. Tried it again and it worked.

 Result after renaming device
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mlsbravesAuthor Commented:
Figured out that you can't rename the device name. Changed it back and everything worked. It was also helpful to know to remove all partitions before adding it to a datastore. Thanks.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It clearly didn't like your SAS name, which is the first error specified directory path is incorrect.

But with partitions on the device, it would not have created the VMFS datastore.
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