Tag Info

Hot answers tagged

77

I suggest that you make the adjustments they have requested. Then benchmark the performance to show them that it made no difference. You could even go so far to benchmark it with LESS memory and vCPU to make your point. Also, "We're paying you to support the software with actual solutions, not guesswork."


51

Providing you are confident you are within the given system specs they document. Then any claim they are making in regards to requiring more RAM or CPU they should be able to back up. As the experts in their system I hold people to account on this. Ask them specifics. What information provided on the system indicates more RAM is needed and how did you ...


16

The big thing is to be able to prove that you are using best practices for your system allocation, notably RAM and CPU reservations for your SQL server. All this being said the easiest thing is to make the adjustments requested, at least temporarily. If nothing else it tends to get vendors over feet dragging. I can't count the number of times I've needed ...


12

For this specific situation (where you have VMware and application developers or a third party who does not understand resource allocation), I use a week's worth of metrics obtained from vCenter Operations Manager (vCops - download a demo if needed) to pinpoint the real constraints, bottlenecks and sizing requirements of the application's VM(s). Sometimes, ...


8

I used to work in support - and part of what you're asking sounds highly rational (and probably is): but there are a few questions to ask yourself prior to just doing the "performance enhancement" they're requesting are you running at least at the vendor's stated minimum system requirements already? if you're at least at minimum sysreqs, are you already at ...


8

Either ask to escalate the ticket or ask for a different rep. Depending on which vendor it is escalation may help if you say that you feel that the current level of support doesn't adequately address the issue. If they will not escalate then asking for a different rep may help because that requires much less "justification" since all it needs is to not be ...


7

You can do this by logging into the host that vCenter is running on directly. Log into the host directly with the standalone console Shut down the vCenter VM Make changes (including deleting the floppy drive) Boot VM Log into VM and expand the disk Profit


7

Delete any outstanding snapshots of the vCenter VM, then you should be able to resize the disk while the VM is running.


5

Sure, you may be able to install all of those apps on a single OS instance and have them live happily together. What happens, though, if you need to scale one of those to larger hardware? What happens if you botch the upgrade of one of those apps and it takes the whole OS down? Virtualization gives you the ability to isolate OSes and applications, as well ...


4

This particular alert can be controlled in the Advanced Settings under the Configuration tab for the host in question. Once there, go to the UserVars category and scroll down to UserVars.SuppressShellWarning. Change the value from 0 to 1, and you will no longer be warned that the host in question is allowing SSH access.


4

This is correct... kinda. Use lsscsi. The SCSI device nodes correspond to the controller/target/device naming you see in VMware. Extreme example: root@vdp1:~/#: lsscsi [0:0:0:0] disk VMware Virtual disk 1.0 /dev/sda [0:0:1:0] disk VMware Virtual disk 1.0 /dev/sdb [0:0:4:0] disk VMware Virtual disk 1.0 /dev/sdj ...


4

I'll throw in my two cents. We've been pretty successful with this approach -- much better outcomes and less frustration on everyone's part. It requires a lot more effort than the blame-game and blindly adding resources, but it also has better chances of finding the underlying problem. When we have serious issues with our on-premise apps that are backed ...


3

There's no granular way to separate out these permissions - if a user has the rights to open the console of a running VM, they also have the rights to send keystrokes and mouse movements to it. View-only to the console's screen might not be that useful anyway, as most OSes will go to a black screen after a while, requiring a keystroke to put anything on the ...


3

The real question is, who is in charge here? If you can't realistically switch to an alternative vendor, then they have the power, and all you can really do is go along with whatever they say and hope it will work out. Not a happy situation! Otherwise, I suggest you ask for another rep (as others have said), but make it clear you are not happy with the ...


2

Yes... Just as with HP or Dell, you can safely upgrade to a newer version (with hardware-specific extensions) on a standalone host by using the vendor-provided .ISO. HP and Dell also allow you to download and install the handful of additional .VIB software packages to bring a generic ESXi installation to a version with vendor hardware support. IBM only ...


2

Do we need VCenter to do upgrades or manage the host? No, you don't need vCenter to do those things. If you have multiple ESXi Hosts you want to manage centrally, you can use vCenter to do this (licensing involved). If you just have one ESXi host running VMs and you need to upgrade to 5.5, you can do so by downloaded the appropriate version and copy to ...


2

The vSphere client you use doesn't matter. If you install the VMwareTools from the client, afaik the version will depend on the package the ESXi the VM runs on provides. Anyway, to the best of my knowledge VMwareTools don't install/upgrade/downgrade themselves. As Zoredache points out, check that there isn't any configuration management solution like puppet ...


2

If you're doing anything where you're moving data to/from the host, then no.. you cannot disconnect and resume. If the task has been backgrounded and is running on the host-only or being managed by vCenter, then you can disconnect. A quick test of this would be to open another vSphere client session and check the task list.


2

There are a number of questions that arise from what you're describing. First, if you're talking about vSphere, you should check that the hardware (which you don't describe) is on the VMware's Hardware Compatibility List (HCL). This will tell you if vSphere is going to be an option. If it's not on the list and you run into trouble, VMware will tell you it's ...


2

I'm going to post a view from the vendor's side. We had this customer that had this recurrent problem where the performance of the software would drop off every few hours or so to some truly abysmal rate then come back a few hours later. The bulitin profiler in the system indicated the system CPU (or possibly memory) speed was disgustingly slow, something ...


2

(I already know this was the answer :) I initially didn't write it as an answer because it was a guess.) Perhaps you need to turn off desktop effects. Or enable video hardware acceleration, if that works OK (never tried it).


1

Found it, /boot was mounted on RO


1

1) Different software is capable of coexisting in same machine, but also is capable of breaking. Once you need to reinstall, it's not the same to reinstall 1-VM-for-1-function than 1-Server-for-N-services. 2) It's up to you. In our small environment there's always a mixture of testing and production. 3) True. On the other hand you could invest in a better ...


1

Zoredache provided the angle I needed to take - CFEngine was running on the machine and a process was setup to ensure VMWare tools was installed.


1

I think you are trying to solve your problem with the wrong tools. VMware templates are very similar to traditional operating system images. They exist to really do two things: 1) Provide a consistent known-good base that all of your servers start with and 2) reduce the repetition of administrative tasks required to go from installation media to that ...


1

It is possible that you do not generate enough IOPS for this to really kick-in. Have a look here on how to change the setting from default 1'000 IOPS to a smaller value. (This is symmetrix specific, but you can do the same for the VMWare Round Robin Provider) I'm however not yet convinced if it really is able to utilize more than one link totally in ...



Only top voted, non community-wiki answers of a minimum length are eligible