Dear Group
I have some performance issues using the following.
1 SAN IBM N3700-A20 (Fas270) 2 IBM x3650 each with two Qlogic(R) iSCSI Single Port PCIe HBA for System x ESX 3.5 1 HP 1800 Gb Switch
When I use IOmeter from a W2K8 ESX VM I get only 18mb/sec using IOmeter setup from Vmware forum speed guide. Regardles witch server I run this from.
But when using MS-Software iSCSI from physical W2K8 box connection to SAN I get around 40 mb/sec.
As I see it. It is not the SAN or SW performance or ??
I have searched the Internet for any answers but have not found any usable.
Can you give me some hints to go by ?
Regards Jesper Harder
----- -I have a high Google IQ
Hey Jesper,
On Wed, Jan 21, 2009 at 10:03 PM, Amateur-FASadmin jesper@harderconsult.dk wrote:
I have some performance issues using the following.
1 SAN IBM N3700-A20 (Fas270) 2 IBM x3650 each with two Qlogic(R) iSCSI Single Port PCIe HBA for System x ESX 3.5 1 HP 1800 Gb Switch
When I use IOmeter from a W2K8 ESX VM I get only 18mb/sec using IOmeter setup from Vmware forum speed guide. Regardles witch server I run this from.
But when using MS-Software iSCSI from physical W2K8 box connection to SAN I get around 40 mb/sec.
What types of disk are you running IOmeter on?
1. Disk in a VMFS 2. RDM (LUN via ESX) 3. SnapDrive (LUN via SW iSCSI initiator)?
Performance between the three can differ quite a bit.
Greets,
Nils
Hi Nils
The ESX VM is on either Disk in VMFS or RDM. The Physical is on LUN via SW iSCSI.
Okay then how does the performance sound ? Also sounds like I would be better off using ESX vmfs for the machines, but inside using SW iSCSI for Data access ?
Hilsen Jesper Harder
Nils Vogels-2 wrote:
Hey Jesper,
On Wed, Jan 21, 2009 at 10:03 PM, Amateur-FASadmin jesper@harderconsult.dk wrote:
I have some performance issues using the following.
1 SAN IBM N3700-A20 (Fas270) 2 IBM x3650 each with two Qlogic(R) iSCSI Single Port PCIe HBA for System x ESX 3.5 1 HP 1800 Gb Switch
When I use IOmeter from a W2K8 ESX VM I get only 18mb/sec using IOmeter setup from Vmware forum speed guide. Regardles witch server I run this from.
But when using MS-Software iSCSI from physical W2K8 box connection to SAN I get around 40 mb/sec.
What types of disk are you running IOmeter on?
- Disk in a VMFS
- RDM (LUN via ESX)
- SnapDrive (LUN via SW iSCSI initiator)?
Performance between the three can differ quite a bit.
Greets,
Nils
-- Simple guidelines to happiness: Work like you don't need the money, Love like your heart has never been broken and Dance like no one can see you.
----- -I have a high Google IQ
-
Amateur-FASadmin -
Nils Vogels