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Implementing RAID 1 in Windows Server 2003 using VMware!

This is a simple tutorial about creating a RAID 1 in VMware for IT people. VMware, well I think you know already about Server Virtualization.Its a well known product.
Let's discuss about some of the techniques related to Load Balancing or Fault Tolerance.....The Disks here used are Dynamic Disks.
RAID - Reduddant Array of Independant (Not much Inexpensive these days. That term suites no more) Disks. There are two types of RAID:

  1. Software RAID - Implemented via the OS or with the help of a Software. Not much efficient however.
  2. Hardware RAID - Hardware level RAID. Much more efficient and Fault Tolerant.

The idea to use a set of disks or an array is to increase the performance (Load balancing) and provide Disaster Recovery (Folt Tollerant).
RAID 0 - StripingThe fastes of all the RAID configurations. This is known as Striping. Striping is the process of Writing data Sequentially to or Read from more than a single Hard Drive (or a Storage Device).First the data is broken up into chunks or blocks. Then the writing process will be accomplished. The process of writing will be done Simultaneosly onto Strips. The performance of reading and writing increases because all the Heads are working all the time
RAID 1 - Mirroring,DuplexingAs the name implies, it creates a Mirror of one Disk onto another. Data will be written to Both the Disks. So if one disk fails other one can be mounted or it can be used to Restore data.There can be a deadlock how ever. The Disk Controller. RAID 1 uses a Single Disk Controller thus a Single point of failure.We can avoid this easilly with the use of Disk Duplexing which means usage of 2 Disk Controllers.
RAID 2 - Striping with ParityThis is similar to RAID1 but with an added feature known as Parity. One disk - typically the last one - is used to store somethings called Parity bits. With the use of these Parity Bits, the lost data can be easilly generated. This uses Logical XOR Operation. When writing, it XORs every data written onto HDDs and stores in the Parity Disk. When one Disk fails, thet PD is XORed with other Data bits on the functioning Hard Drives. This is a very effective technology in terms of Fault Tolerance. But Performance is pretty low.
RAID 3Similar to RAID 2 but instead of using Strips which are in Bits this technique uses Strips in Bytes. That increases the performance over RAID2.
RAID 4Strips data (Blocks) and uses a Parity Disk. Requires at least 3 Drives. Not widely used.
RAID 5The most popular method. Requires at least 3 Disks. Disks are used to store Parity data as well for each perticular drive. Data Stiped in Bytes (uses block-level striping with parity). Supports Unlimited number of Drives. Failure rate Drops when the number of devices increas.High speed reads can be performed. But writing is pretty slow in this approach.
Note: The non-standard RAID levels 5E, 5EE and 6E extend RAID 5 and 6 with hot-spare drives. Other non-standard RAID levels include: RAID 1.5, RAID 7, RAID-DP, RAID S or parity RAID, Matrix RAID, RAID-K, RAID-Z, RAIDn, Linux MD RAID 10, IBM ServeRAID 1E, unRAID, and Drobo BeyondRAID.
So how are we going to implement such a structure in VMware?That is quite easy. This is an example of Disk Mirroring. Each disk has to have Similar Capacity.
  1. Click on "Edit Virtual Machine Settings".
  2. Click on Add ->Next-> Create new Hard Disk.
  3. Select SCSi.
  4. Give a Suitable Disk Capacity for new Disk.
  5. Give a "Name" and Browse the storage location.
  6. Click on Finish.
  7. You have to Repeat the steps to create the number of Disks that you require. You have to have 2 Disks. Do not use the Main Drive. Use Separate Disks.
  8. Click on OK.
  9. Click on "Power on this Virtual Machine".
  10. After booting up the machine, its the time to implement the Mirrors.
  11. Log in.
  12. Right click on My Computer and select "Manage".
  13. Click on "Disk Management".
  14. Get the "Convert Disk Wizard".
  15. Select the 2 disks (tick on the check boxes).
  16. Click "Next -> Finish
  • Implementing RAID1
  1. Right click on the Disk n which your first added drive (n = the number).
  2. Select "New Volume".
  3. Select the option "Mirrored".
  4. Click on "Next".
  5. Add the Disks from the left hand list box to the right hand list box (the two drives that you have created).
  6. Click on "Next".
  7. Assign a Drive Letter.
  8. Format using NTFS. Make sure you provide a "Volume Label".
  9. That's all what you need to do!
  10. Wait until the Volumes get formatted and Synchronize.
  11. Implementation of the other technologies are similar to the above procedure.
Hope you would enjoy this tutorial.Thanks!
-Lasitha

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1 Answer

enable RAID system


use this guide, this is fo the embedded sata raid controller that comes standar with the ml150 g5.

Enabling SATA RAID functionality in the BIOS Setup Utility: 1.Boot the server, and then press F10 to enter the ROM-Based Setup Utility (RBSU).
2.Go to the advanced tab.
3.Enter the IDE configuration or hard disk configuration.
4.Change the ATA/IDE configuration to enhanced or SATA controller 2 enhanced (if not available then use enabled mode).
5.Configure SATA as RAID or configure controller 1 as RAID.
6.F10 to save and exit.
7.Reboot the server.
8.During post f8 will now show up for the embedded SATA set up.
•Creating the RAID volume.
1.Enter the embedded SATA setup by pressing f8 during post.
2.Enter the array configuration utility.
3.Enter create array.
4.Create the raid volume as desired.
5.Save and exit.

i hope it helps you!!!

Aug 11, 2010 | HP ProLiant ML150 G5 Server

1 Answer

Which VMware product for dual VISTA and XP Operating systems?


for vmware server u need licenses for installing and its not meant for a novice user also. the easiest way to do virtualisation is sun's VMBOX, which is relatively light than the others wich support vista also. here is link try it and feel it

http://www.virtualbox.org/wiki/Downloads

Jul 23, 2009 | Computers & Internet

1 Answer

VMware


Since you do not have a DVD, Vista is out, That leaves you with Windows XP (if you have it) or Linux/BSD. Your question does not give a lot of details, are you trying to install VMware Server or ESXi?
Both are free but there is a big difference, ESXi is a bare metal hypervisor and VMware Server is not. This means the ESXi does not need an operating system already installed but VMware Server does.
VMware has posted hardware that is compatible with ESXi but you should note that you really need at least 2 computer to run ESXi - one as the actual server and another to manage it. With VMware server you only need one machine and it is less sensitive to hardware but you have to have an operating system already installed on the machine, then load the VMware server and then create the virtual machine. What type of machine are you trying to create VMware supports practicaly all versiona of windows and linux. Can you detail what you have and what you have done so far to get the error message?

Sep 27, 2008 | VMware VirtualCenter for PC

1 Answer

raid problem


After creating a raid, you have to create a logial drive in this RAID. After creating a logial drive your operational system can "see" this drive as a phisical disk.Then you can install the operational system.
Let me know if this post help.

Dec 17, 2007 | Intel Server Platform SPKA4 (SKOC2HI)

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