Client machines slow under hyper v

[Guest muaddib32]

I have two servers I am running as hyper v clients on a new W2008 server.

They are running very slowly. It takes minutes for them to perform the

simplest action such as opening IE. The virtual disks are stored on a RAID5

array.

 

I used to have them running as clients on a Athlon3200 W2003 server with 2GB

RAM running VMWare server and they were much faster. The disk then was just

RAID0.

 

Can anyone suggest how I can speed them up. Without adding extra hardware

as I shouldn't have thought it was necessary.

 

Cheers

Ben

 

Host:

Windows 2008 Standard (normal not server core)

8GB RAM

Xeon 5030 processor

 

Client 1

Small Business Server 2003

2GB RAM

 

Client 2

Windows Server 2003 + SQL Server 2005

1.5GB RAM

[Guest Mike Moreland]

RE: Client machines slow under hyper v

 

You might want considering running a raid 0+1, instead of raid 5. I too,

have 2 servers. One runs 2003 server, while the other runs 2008. I have

both servers in raid 0+1. I've run raid 5 before and had performance issues.

Due to the amount of parity calculating required, RAID 5 can seriously slow

down a system. Performance will depend to some extent upon the stripe size

chosen. Also, if your using a software raid 5 you'll experience even more

performance loss. The overhead necessary in dealing will all the parity will

continue to bog down writes. Here are some of raid 0+1 advantages.

RAID 0+1 is implemented as a mirrored array whose segments are RAID 0 arrays

RAID 0+1 has the same fault tolerance as RAID level 5.

RAID 0+1 has the same overhead for fault-tolerance as mirroring alone

High I/O rates are achieved thanks to multiple stripe segments

Excellent solution for sites that need high performance but are not overly

concerned with achieving maximum reliability.

Good luck.

 

 

 

--

Mike Moreland

© 972.271.5083

Integrated Secure

 

 

"muaddib32" wrote:

> I have two servers I am running as hyper v clients on a new W2008 server.

> They are running very slowly. It takes minutes for them to perform the

> simplest action such as opening IE. The virtual disks are stored on a RAID5

> array.

>

> I used to have them running as clients on a Athlon3200 W2003 server with 2GB

> RAM running VMWare server and they were much faster. The disk then was just

> RAID0.

>

> Can anyone suggest how I can speed them up. Without adding extra hardware

> as I shouldn't have thought it was necessary.

>

> Cheers

> Ben

>

> Host:

> Windows 2008 Standard (normal not server core)

> 8GB RAM

> Xeon 5030 processor

>

> Client 1

> Small Business Server 2003

> 2GB RAM

>

> Client 2

> Windows Server 2003 + SQL Server 2005

> 1.5GB RAM

>

[Guest muaddib32]

RE: Client machines slow under hyper v

 

Hi Mike,

 

Thanks for your reply. Good point. I've never used RAID5 before. I better

grab myself another disk and then move the array

 

"Mike Moreland" wrote:

> You might want considering running a raid 0+1, instead of raid 5. I too,

> have 2 servers. One runs 2003 server, while the other runs 2008. I have

> both servers in raid 0+1. I've run raid 5 before and had performance issues.

> Due to the amount of parity calculating required, RAID 5 can seriously slow

> down a system. Performance will depend to some extent upon the stripe size

> chosen. Also, if your using a software raid 5 you'll experience even more

> performance loss. The overhead necessary in dealing will all the parity will

> continue to bog down writes. Here are some of raid 0+1 advantages.

> RAID 0+1 is implemented as a mirrored array whose segments are RAID 0 arrays

> RAID 0+1 has the same fault tolerance as RAID level 5.

> RAID 0+1 has the same overhead for fault-tolerance as mirroring alone

> High I/O rates are achieved thanks to multiple stripe segments

> Excellent solution for sites that need high performance but are not overly

> concerned with achieving maximum reliability.

> Good luck.

>

>

>

> --

> Mike Moreland

> © 972.271.5083

> Integrated Secure

>

>

> "muaddib32" wrote:

>

> > I have two servers I am running as hyper v clients on a new W2008 server.

> > They are running very slowly. It takes minutes for them to perform the

> > simplest action such as opening IE. The virtual disks are stored on a RAID5

> > array.

> >

> > I used to have them running as clients on a Athlon3200 W2003 server with 2GB

> > RAM running VMWare server and they were much faster. The disk then was just

> > RAID0.

> >

> > Can anyone suggest how I can speed them up. Without adding extra hardware

> > as I shouldn't have thought it was necessary.

> >

> > Cheers

> > Ben

> >

> > Host:

> > Windows 2008 Standard (normal not server core)

> > 8GB RAM

> > Xeon 5030 processor

> >

> > Client 1

> > Small Business Server 2003

> > 2GB RAM

> >

> > Client 2

> > Windows Server 2003 + SQL Server 2005

> > 1.5GB RAM

> >