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shard26

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Our virtual server is too slow

Background:
Dell PowerEdge 840, VMWare ESXi v5.0.0

On this server are 2 virtual servers:

SBS 2003, SP 1 (this server was migrated from a physical server)
Server 2003, Standard, SP2 (this was created brand new on the vm server)

(each server has a C and E drive)

Problem:

We place a 3GB file on each E drive (same file)  and copy it to it's own C drive and here's the results (time it takes to copy and paste onto C)

on the SBS server = 4 minutes and 17 seconds
on the Standard server = 1 minute and 58 seconds

Why is the data transfer so slow on the SBS server and how can we make it as fast as the Standard server?



thanks
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RickEpnet
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Give us more detail. How much RAM what kind of storage do you have etc?
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RickEpnet
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Stop the exchange service and IIS service and try again.

SBS server required more resources as it is running more applications then a regular server.
Hence there is the difference in transfer rate
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shard26

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"Give us more detail. How much RAM what kind of storage do you have etc?"

Total RAM in system = 6GB
SBS = 4GB
Standard = 1GB

datastore1 is 691GB

Standard Server = 2 x 50GB (thick provisioned, virtual device node - SCSI)
SBS = 3 disks (40, 500, 10GB) (all thick provisioned, virtual device node is SCSI for disk 2 and disk 3, and IDE for Disk 1)
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"Stop the exchange service and IIS service and try again."

Done.  Still took 4 minutes and 12 seconds.
Last suggestion assign a new Network card to SBS and try
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"Last suggestion assign a new Network card to SBS and try"

but I'm copying from E to C? No network involved. Or is that wrong?
sorry my bad.....
Do you have SQL server installed on exchange server?
SOLUTION
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Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
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I think you need to give the SBS more resources 4GB just is not enough.  how many mailboxes do you have?

Try stopping the informationstore and all the SQL servers and see if that make a difference in speed.
You cannot give SBS 2003 more than 4 GB - it won't use it; you'll be wasting the memory.

What kind of disk configuration do you have PHYSICALLY and where are the VMDKs stored?  Are these physical disks 7200 RPM? 10K, 15K?  Is each VMDK on a different array?
C and E are on the network so network is involved.

Try making NICs to  VMX3 and test once more.
Look at the settings for each VM, both on the main page and the advanced settings pages. What differences can you spot (can you post the .vmx files)? Are the HBAs and NICs the same? Do you have unneeded virtual hardware that was converted as part of the P2V?

What is the block size for the NTFS volumes on each? In addition to standard SBS services, what else have you got running on that host? Is there any AntiVirus running? Is the SBS server in production for users while you're doing these tests? If so, how many connections are active with open files while doing your testing?
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ASKER

for some reason it was greatly improved by changing the Disk 0 from IDE to SCSI within the virtual environment