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I'd be a bit sceptical about splitting vmdk files for a virtual machine over different raid groups and datastores. &nbsp;Remember a virtual machine is a collection of files, &nbsp;memory as well as virtual disks. &nbsp;I'm pretty sure that vmware recommend you keep a virtual machine all together.<br />
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There is however benefit in putting complete VM's you need to be higher performing on the higher performing datastore (15K disks)<br />
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<a href="http://www.virtualpro.co.uk" rel="ugc">www.virtualpro.co.uk</a>
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I'd be a bit sceptical about splitting vmdk files for a virtual machine over different raid groups and datastores.  Remember a virtual machine is a collection of files,  memory as well as virtual disks.  I'm pretty sure that vmware recommend you keep a virtual machine all together.

There is however benefit in putting complete VM's you need to be higher performing on the higher performing datastore (15K disks)

www.virtualpro.co.uk [http://www.virtualpro.co.uk]

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I have quick question regarding VMware. I am going to deploy a esxi server with 2 raid 5 sets. one set is made up of 146gb 10K disks the other 15K disks. This server is going to host a SBS 2003 server and a few smaller app servers. I was going to put the SBS server on the 15K set and the other 2 on the 10K set but it occured to me that it may be better to put the os partition of all on the 10k set and the data partitions on the 15K set. <br />
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Any reccomendations?
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I have quick question regarding VMware. I am going to deploy a esxi server with 2 raid 5 sets. one set is made up of 146gb 10K disks the other 15K disks. This server is going to host a SBS 2003 server and a few smaller app servers. I was going to put the SBS server on the 15K set and the other 2 on the 10K set but it occured to me that it may be better to put the os partition of all on the 10k set and the data partitions on the 15K set. 

Any reccomendations?

VMWARE Disk Question

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.