VMware

This Question is Possibly Answered

1 "correct" answer available (10 pts) 1 "helpful" answer available (6 pts)
1 2 3 4 5 6 Previous Next 83 Replies Last post: Nov 18, 2009 10:19 AM by qmacker   Go to original post
Click to view awliste's profile Enthusiast 44 posts since
Jun 10, 2009
Don't be discouraged boss. It takes time to learn.

1) stick to jumbo framing. Keep that in your mind - don't strike that one out. It stays.
2) If you're not sure about your storage setup, check here: http://virtualgeek.typepad.com/virtual_geek/2009/09/a-multivendor-post-on-using-iscsi-with-vmware-vsphere.html
==> Great place to start. The iSCSI superfriends podcast a few weeks ago is REALLY informative (vmware communities roundtable podcast)
3) You're going to find that making a 500G LUN on the thing is equally as slow. Least, I did. I split ours into JBOD, two 1.5 LUNs, and whatever was left as NFS.
4) you won't see the issue arise. I'm pretty sure I know why you got that issue, but I need to research it further to confirm and I don't have a lot of time today to do so.

Good luck trooper. If you need help on specifics, don't hesitate to DM me.

Regards,
- abe

Integritas!

Abe Lister

Just some guy that loves to virtualize
==============================
Ain't gonna lie. I like points. If what I'm saying is something useful to you, consider sliding me some points for it!
Click to view ItimKevinW's profile Novice 4 posts since
Nov 5, 2009

Nice post, Very helpful :)

I've rebuilt the iSCSI Drive on the Iomega box as 500GB and all is well with the ESX server now, I have 499.99GB to use :) so it must have been something to do with making it a 2.2TB iSCSI that wasn't liked.

Thanks for all the help and advance apologies for all the nab questions I'm bound to ask in the future :)

Click to view qmacker's profile Novice 19 posts since
Sep 9, 2009

Okay, a sort of "final" report back.

This device has been nicely running: 1 x SBS 2008 Server (5GB RAM), 1 x Windows Server 2008 TS 32-bit (1GB RAM), 1 x Windows Server 2003 R2 TS 32-bit (1GB RAM), 1 XP SP3 VM (512MB RAM).

They are all running off NFS. Noperformance "hit" that I can really notice, now that I've been running them for a while. Seems just as good as they were on direct-attached storage. I'm sure they are a tiny bit slower if I measured them, but it's really not noticeable.The only thing I don't have, is a lot of users simultaneously hitting the machines. I suppose that's the ultimate test. I have decided I will deploy this at a small client first though - 7 to 10 heavy-ish users - we'll see how that pans out. I feel confident that it will be fine. This is a great little box.

Now, I've a question, but I'll but it in my next reply on this post...

Click to view qmacker's profile Novice 19 posts since
Sep 9, 2009

I didn't want to mention it above, but I've found a slight problem with using the Iomega ix4-200d with a UPS in a power outage. It may be my mis-configuration, but it's a potential issue. It's certainly not a "fault" with the ix4-200d. Here's the problem:

  • Power returns after a power outage:
  • ESXi server starts up. As you know, this doesn't take very long - maybe a minute.
  • Iomega ix4-200d also starts up: This takes some time - about 2 minutes! This is a problem!! Because...
  • ESXi server goes to boot up the first VM from the NAS - NAS isn't ready yet!
  • All other VM's are not ready yet either, so ESXi skips quickly over them.
  • ESXi gives up trying, after the last one.
  • 2 minutes later: NAS is ready. Too late though...ESXi has already given up.

I've tried changing the "Default Startup Delay" time in the ESXi "Configuration/Virtual Machine Startup/Shutdown" settings, but that only works for delaying SUBSEQUENT startups after the first VM starts. The first VM tries to start immediately the ESXi server is ready. I can't find a way to delay the startup of the first VM. Am I missing something?

Right now, to get around this, I've put an unneeded XP VM on direct-attached storage, and set that to startup first. By the time it starts up, the NAS is ready. Anyone got a better solution? Maybe I should move this question to another forum?
Click to view dave_hood's profile Novice 6 posts since
Nov 1, 2006
Thanks for getting back to us Qmacker, I know there are a lot of other folk watching this thread to see how you got on - sounds positive!

One quick question - is there a reason you are using NFS and not ISCSI? Did you try both and find NFS performs better or something else?

thanks for the info!

Cheers

Dave
Click to view Jasemccarty's profile Champion 3,806 posts since
Apr 5, 2005

Dave,

I also have an IX4-200d, and with regards to NFS vs iSCSI... I feel that using NFS doesn't require "partitioning" of drive space like iSCSI does on the unit.

There appear to be 2 types of presented "storage" a folder or an iSCSI target. Folders can be used for NFS, CIFS, etc., while iSCSI targets can only be used for iSCSI connections. With that being said, if the IX4-200d is a general purpose SoHo NAS, it is easier to manage if not using iSCSI, but rather NFS/CIFS/etc.

Cheers,
Jase

Jase McCarty
http://www.jasemccarty.com
Co-Author of VMware ESX Essentials in the Virtual Data Center (ISBN:1420070274) Auerbach
Co-Author of VMware vSphere 4 Administration Instant Reference (ISBN:0470520728) Sybex
Please consider awarding points if this post was helpful or correct
http://www.jasemccarty.com/images/vExpertSm.jpg

Click to view dave_hood's profile Novice 6 posts since
Nov 1, 2006
Hi Jase,

thanks for the reply - so it is more a management choice than performance based? I thought that the performance maybe better with ISCSI, but perhaps not. Good to know either way.

Cheers

Dave
Click to view qmacker's profile Novice 19 posts since
Sep 9, 2009

Hi Jase,

I used NFS for ease of use and backup purposes. In my earlier tests I did find that iSCSI was marginally faster. This was my first time out the gate with NAS storage and VMware though, so I decided to stick with NFS for its versatility.

VMware Developer

SDKs, APIs, Videos, Learn and much more in the Developer community.

Learn More

Developer Sample Code

Increase your developer productivity with VMware API sample code.

Learn More

VMworld Sessions & Labs

Online access to the latest VMworld Sessions & Labs and online services.

Learn more

Purchase PSO Credits Online

Purchase credits to redeem training and consulting services online.

Buy Now

Community Hardware Software

View reported configurations or report your own.

Learn More

VMware vSphere

Come witness the next giant leap in virtualization.

Register Today

Communities