Solved

Hardware Requirements Virtualization

Posted on 2011-09-08
6
465 Views
Last Modified: 2012-06-21
Hi All,

 We have a client where I am getting ready to deploy the following setup;

 Server 2008 Enterprise (Hyper V Host)
 Small Business Server 2011 (Hyper V Guest)
 Server 2003 Standard- Terminal Server (Hyper V Guest)

 All of this will be on an HP ML350 G6. 18GB of RAM, Xeon CPU, all the good stuff.

 What I want to figure out is how to do the hard drives. I am thinking about running six 146GB 15000RPM SAS drives. Should I do this in RAID 5? Should I do two RAID 5 arrays? (one for SBS, one for the others?) SBS can be quite intensive- I'm not sure which way will be the best performance.

 Thanks for the advice!
0
Comment
Question by:LindsayCole
6 Comments
 
LVL 55

Expert Comment

by:andyalder
ID: 36503474
I'd be tempted to have just one RAID 10 array, that way if SBS needs more IOs it can borrow them from Terminal Server (at the expense of slowing it down of course).
0
 
LVL 42

Assisted Solution

by:kevinhsieh
kevinhsieh earned 500 total points
ID: 36503535
You didn't mention your IOPS requirement, or any other way to calculate it, such as organization size. IOPS are way down in Exchange 2010 vs 2003, so a small organization should be good with two 10K SAS drives in RAID 1. If you have over 30 users or so I would look at 4 drive RAID 10 of 10K SAS. It is generally better to have a single array of more drives rather than those same drives in separate arrays, because you end up limiting the amount of IOPS available to any given array.

Slightly off topic, but why is your host 2008 Enterprise and the TS VM windows 2003? With SBS 2011 you are licensed to run Windows 2008 R2 standard on the host in addition to SBS 2011 as a VM. You would just need a Windows 2003/2008 license for the TS VM, not an expensive Windows Enterprise license. I would also make sure that the host is running the R2 SP1 version of Hyper-V, so that is either Windows 2008 R2 SP1 or Hyper-V Server 2008 R2 SP1.  
0
 
LVL 2

Author Comment

by:LindsayCole
ID: 36504216
To start; Server 2003 is an existing server which is running a legacy app that doesn't support 2008. I will be virtualizing it during the migration.

As for users, there are 16 users currently- with 22 possible in the next few years.

They will have six 146GB 15000 RPM drives. It's just a matter of how to configure.

So a single RAID 5 array tends to be better?
0
Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

 
LVL 55

Expert Comment

by:andyalder
ID: 36504443
Can they afford the space for a single RAID 10 array (or cost of two more disks)? Raid 5 sucks ar random writes, although that's a bit offset if you have a decent size battery/flash backed write cache module.
0
 
LVL 42

Accepted Solution

by:
kevinhsieh earned 500 total points
ID: 36504679
A Single RAID 10 will perform better than a single RAID 5, a single 6 drive RAID 5 will perform better in aggregate than two 3 drive RAID 5.

I think you have too many drives. I would build a 4 drive RAID 10, kepp 1 drive as a hot spare, and leave 1 drive one the shelf as a cold spare. It will save you 12 watts of power, plus about 12 watts of cooling by removing that 1 drive.
0
 
LVL 7

Expert Comment

by:D_Vante
ID: 36517599
Go with 8 drives, 2 RAID 10 containers.  The G6 can hold 8 drives in SFF
Then you can replicate the servers between containers for backup purposes.
Plus plenty of IOPS with the two containers
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Western Digital 2TB Red Not Being Detected By RAID Card 15 90
RAID 5 and Upgrading drives 12 86
HP Server -- RAID health, etc ? 2 50
HP Proliant DL 380 G6 Server 5 43
Lets start to have a small explanation what is VAAI(vStorage API for Array Integration ) and what are the benefits using it. VAAI is an API framework in VMware that enable some Storage tasks. It first presented in ESXi 4.1, but only after 5.x sup…
Create your own, high-performance VM backup appliance by installing NAKIVO Backup & Replication directly onto a Synology NAS!
This video teaches viewers how to encrypt an external drive that requires a password to read and edit the drive. All tasks are done in Disk Utility. Plug in the external drive you wish to encrypt: Make sure all previous data on the drive has been …
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

791 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