Solved

Vmware and SCSI

Posted on 2009-05-18
3
655 Views
Last Modified: 2012-05-07
I have read in a few places that when using VMware you should use a SCSI drive for the best performance.  Are they saying use real SCSI hardware, or create a VM with virtual SCSI drives?  

If its just virtual SCSI drives why does it make a difference?
0
Comment
Question by:Tom_Hickerson
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 7

Assisted Solution

by:crokeefe28
crokeefe28 earned 100 total points
ID: 24415399
Real SCSI, but that would only be for local VMDK's.  FC would be the prefered if you can afford it, or maybe SAS.
0
 
LVL 19

Accepted Solution

by:
vmwarun - Arun earned 300 total points
ID: 24415422
By default VMware only supports SCSI, SATA and SAS Drives in ESX Hosts.

VMware has got 2 environments for running Virtual Machines - Hosted Environment and Bare Metal Hardware Environment.

Hosted Environment includes products such as VMware Workstation, VMware Server and VMware Fusion.

Bare Metal Hardware Environment includes ESXi/ESX Hosts.

If you are intending to run your VIrtual machines only in Hosted Environment, you can use IDE or SCSI but if you intend to move your VMs to Bare Metal Hardware Enviroment, IDE is not supported.

For this reason, either SCSI, SATA or SAS is recommended.
0
 
LVL 13

Assisted Solution

by:3nerds
3nerds earned 100 total points
ID: 24415752
The simple answer behind everything that the 2 people above me have stated which is all true is that.

SCSi can perform a read and a write in one clock cycle where as SATA and older IDE can only perfrom either a read or a write in that same clock cycle. So if you have high input output like databases SCSI provide an almost 2 to 1 advantage. In the real world it isn't  a 2 to 1 improvement but you do see a good advantage.

Regards,

3Nerds
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
VMware lost connectivity to datastore 15 1,115
Esxi host patches. 5 125
VMware:  Virtual switches and multiple NICs 9 129
PartedMagic Secure Erase 14 21
Last article we focus in how to VMware: How to create and use VMs TAGs – Part 1 so before follow this article and perform the next tasks, you should read the first article how to create the TAG before using them in Veeam Backup Jobs.
This article will show you how to create an ISO CD-ROM/DVD-ROM image (*.iso), and MD5 checksum signature, for use with VMware vSphere Hypervisor 6.5 (ESXi 6.5). It's a good idea to compare checksums, because many installations fail because of a corr…
Teach the user how to install ESXi 5.5 and configure the management network System Requirements: ESXi Installation:  Management Network Configuration: Management Network Testing:
Teach the user how to rename, unmount, delete and upgrade VMFS datastores. Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question