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18

Like chanting Bloody Mary into a darkly-lit bathroom mirror, let's see if we can get Jake Oshins to show up... Gang scheduling is also referred to as co-scheduling. I think VMware prefers the term co-scheduling to gang scheduling. In ESX versions prior to version 3.x, VMware used "strict" co-scheduling, which had the synchronization drawbacks. In ESX 3.x ...


5

Okay, Ryan, you made my day. I don't read this forum as much as I used to, but I happened to check in. Red888, you should know up front that I'm a software architect who works on Hyper-V at Microsoft. I assume most people reading this are perfectly capable of clicking on my name link below this and discovering that, or even Googling me, but for this ...


5

For VDI (VMware View), my recommendation is to enable HA on your cluster as with any virtualized workload. That's a key feature of vSphere and makes sense to have on. For DRS, understand your workload a bit. How many hosts will you have? How many VMs? How tight is the consolidation? I'd say that the activity on virtualized desktops is not as predictable ...


3

Your ISP connection will only assign a single public IP address to one of your systems, so the first one powered on gets that address. You'll want a router which will provide NAT, allowing all of the machines to use the same public IP address. This could potentially be a piece of hardware, or another VM, a virtual router, running on that same VM host.


2

Please Refer to the following KB article from vmware. You probably have a stale lock on it. vmkfstools -B /vmfs/devices/disks/naa.00000000000000000000000000:1 where naa.00000000000000000000000000:1 is replaced with the LUN NAA ID and partition to be checked. Note the ":1" FYI: naa is not always the prefix. Mine are a fiber lun that starts with eui. ...


2

You're mixing 4k-sector (Advanced Format) disks and 512-byte drives in the same array. That's one consideration. WD Red and Black disk drives have different characteristics. What type of performance are you expecting? ESXi isn't compatible with software RAID, so are you comparing the right things? If you're comparing another OS to ESXi, that's not a valid ...


2

VMware host servers do not automatically update without a deliberate action triggered from vCenter via Update Manager. Please provide the answers to: What specific build numbers of ESXi do you have? What time did the systems reboot? What is shown in the Events log inside of vCenter for the affected hosts? It should be very clear what happened. What do the ...


2

Create these as separate VMs from a single master template. This way, you can recreate the VMs as needed, but still avoid any issues associated with long-running snapshots and the performance and storage implications of doing so.


2

I'd suggest updating the firmware of the Broadcom NICs on your Dell PowerEdge server. The fact that you're seeing external connectivity problem in addition to VM-specific pings points at a NIC issue. Can you try another NIC device? (this host has four) How many uplinks do you have from the Standard vSwitch? (you should have multiple live uplinks) How ...


2

I know this post is a little old, but the question and points raised are still very relevant. VMware snapshots are definitely not backups. Worse side effect that I had happen to me and numerous customers, they keep a 6 month old VMware snapshot, the ESXi host experiences an unplanned disruption causing the ESXi to reboot or a reboot is needed to clear the ...


1

Here are a few ways you could do it: Create a separate vSwitch for each group of virtual machines that DO need to communicate with each other. Virtual machines on different vSwitches won't be able to communicate with each other. Create separate port groups on the same vSwitch and assign each port group a different VLAN ID. Then connect the relevant virtual ...


1

I've also seen the document you linked in your question. Unfortunately, it breaks down when VMware starts to push their vCloud design and security modules. Can you tell us about your vSphere environment? Specifically, I'd like to understand the license tier and high level design of your vSphere infrastructure (e.g. 3-host cluster running vSphere Essentials ...


1

I was able to recover the data out of the file with the following steps: 1) Rebuild Descriptor With Lsi Controller and Thick Eager Provisioning. 2) Download the VMDK off of the Host On to Local PC 3) Use SDK to http://www.running-system.com/how-to-mount-a-vmdk-file-under-windows/ This is very counter intuitive considering I was using Paravirtual Iscsi ...


1

After 3 days of non-stop troubleshooting, I have eventually found that the problem is... wait for it... our Cisco ASA crapping itself and flooding the network with bogus traffic. Because we were running pretty basic switching, and the server environment is 100% virtualised, we didn't notice anything inside the network stack. The biggest red herring that I ...


1

You're right on the edge of what's acceptable for an ESXi 5.5 host. The processors on that host are about 5 generations old. RAID 5 is also a bit of an issue, but if you have an array battery and write caching enabled, it shouldn't be terrible. I'd say that the gear is too old to be used for a new deployment. 8GB of RAM is tight. How have you apportioned ...


1

I don't know if this is possible but it seems correct. Just give it a try. If you remove the original VMs instead of deleting them, you can re-register them if it doesn't work. Personally, I would deploy a test VM with HW version 10 and give a try first. Oh, there's something else you can try: Downgrading the virtual machine hardware version in ESX/ESXi ...


1

There's a feature called linked clones, that's possibly what you're looking for. I think it's baked into ESXi but you can't use it without an additional component. VMware wants you to have View, vCloud Director or vCloud Automation Center (renamed to vRealize Automation); they all support linked clones afaik. There are ways to do it but they are unofficial ...


1

USB drives can fail. This is caused by either a corrupted file or bad media and can occur at random. My general advice is to only boot ESXi from USB or SDHC card if you have SAN/NAS-based storage for your guests and are operating in a cluster. Otherwise, this can happen and cause unnecessary and frustrating downtime. Please see: What happens when the USB ...


1

I haven't performed this particular task, but I have done many other things in an automated way using pysphere (http://code.google.com/p/pysphere/). The documentation isn't as thorough as I might prefer, but it's gotten the job done for me so far.


1

It's been done with some success here: http://www.highlyunsupported.com/2012/03/multiboot-esxi-5-windows-2008-r2-rhel-6.html. Key to success is install ESXi first unless you are also installing Xen. Use Grub to chainload the ESXi SysLinux bootloader, that's the easiest path and the one I took. Alternatively if you are using a server with a built-in RAID ...



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