Tag Info

Hot answers tagged

12

If the files are stored at the filesystem level without user-based encryption and with no ACLs then yes, run away. If ALL data was stored within the database then I would feel slightly less hesitant but even still, any vendor that says it's ok (especially when HIPPA is in the mix) to use shared ID's is suspect in my book. If you join the machine to a ...


11

Wait - you're asking for server grade NICs but want to buy a 350 bucks switch?! I don't get that ... Usually "server grade" 48 port GigE switches go for somewhere around 3000-5000 USD list price. Maybe you want to look out for switch side things like stacking for cross-stack LACP. Regarding the NIC, things like: proper DMA interface and good drivers that ...


7

Agreed, with profile sharing comes a whole host of issues - not the least of which is the inability to have good accountability (or even ANY accountability) for exactly who did exactly what and exactly when it happened. Find another vendor - one that adheres to basic security principals. Try to find someone with a SAS 70 type II certification if possible. ...


6

Yes, certainly. F5 BIG-IP Cisco ACE Foundry (now Brocade) Server Iron Juniper DX series (being discontinued) Zeus ZXTM (available as software or appliance) There are also (quite many) cheaper load balancer appliances. Some examples: Coyote Point Barracuda KEMP Technologies The one thing that stands out in your post is caching. Many load balancers can ...


6

Short answer: no, it is not. From a recent RackSpace KB article possibly outlining the root cause of your problem: Uninstalling the existing XenServer Tools software will render your server inaccessible. This is due to the simple fact that the XenServer tools contain paravirtualized drivers (networking, storage) necessary for the virtual system to ...


5

I'd really like to say that you should avoid using any G3 ProLiant in 2013... especially for virtualization... Anywho, the XenServer HCL does not include the G3 ProLiants. You need a 64-bit CPU per the XenServer software requirements. One or more 64-bit x86 CPU(s), 1.5 GHz minimum, 2 GHz or faster multicore CPU recommended The HP ProLiant DL360 G3 systems ...


5

The nearest thing in concept to a dedicated Type 1 "Desktop" Hypervisor at the moment is probably Parallels Workstation Extreme although it is still a hosted Hypervisor. It relies heavily on relatively new hardware virtualization capabilities (Intel VT-d and Xeon 5500 series CPU's for starters) to allow the guests to selectively gain direct access to the ...


5

As far as I can tell, Citrix XenServer offers the following on top of Xen.org: Technical support (free and additional paid) XenMotion, for moving active VMs across hosts Windows GUI Windows drivers It'll work with Citrix Essentials for XenServer


5

Windows 2003 SP1 went out of support in April, so your OS does not get any security patches anymore. You need to upgrade to SP2 ASAP. SP2 also has lots of random bug fixes in it - your issue could go away. If your OS has that old a patch level, there is a good chance some drivers - specifically print drivers - could be out of date on the box too. As ...


5

This is all surprisingly similar technology - well at it's most basic anyway. Firstly I just want to define the difference between terminal-services and virtualisation; Terminal services such as Citrix's older products, MS TS etc. work by having code executing on a server and the display of that code being transmitted and redisplayed on a client, the ...


5

@DejanLekic: tune2fs etc do only scan the file system for errors. The kernel error messages you observed are about hardware failures, which is one layer beneath the file system. Modern file systems and operating systems are taking hardware failures very seriously; ext* remounts itself as read-only to prevent any write access causing further damage, XFS shuts ...


4

It could still be the XFS filesystem in this case. You may have heavy fragmentation issues as well as the slowdown that comes with a nearly-full filesystem. You could benefit from more space in either case. Please check the XFS filesystem's fragmentation. You can do this with the xfs_db command. If the filesystem is /dev/sdb1, for example, then you command ...


4

The privilege path that the password reset system is taking is identical to what happens when an administrator resets the password; the service account that the self service software is using will be assigned the same rights. It's a simple privilege against the user account, which overrides the password change rate-limiting restrictions in the password ...


4

The VMDK file is the actual virtual disk, an ovf file is just a settings file (plain text), that VMWare products (like ESXi Server) and other virtualization software (like Virtualbox) can use when importing the VM. You may have an existing settings file (like a .vmx) which you can convert into ovf format using VMware's tool 'ovftool': ...


4

If you don't already have SharePoint, I would not bother implementing it, for exactly the reasons you described. XenApp can already do that natively. The Citrix WebPart looks slick, if you're already using SharePoint as your portal. If you're not, you're doing a lot of work for 0, and I mean 0, gain.


4

You're asking about doing a small iSCSI SAN, and you're on the right track. We do something very similar with Dell servers and MD3000i arrays. In the diagram provided, you show two links from server to switch. I think you can get away with one link, unless you're bonding them for greater throughput. As shown, the arrangement protects against failure ...


3

You could force these users to use a proxy script using a GPO. The proxy script is a simple JavaScript, allowing you to direct connection through different proxies or direct. Create the script so that allowed sites are sent DIRECT or through the proxy used on your network (if any), but any undefined sites are sent to a bogus proxy address. It could be ...


3

OK, this is solved. It turns out to be an issue with the Gnome mouse settings (System->Preferences->Mouse). If you have selected "Show position of pointer when the Control key is pressed" then it won't pass Ctrl key presses to Citrix. This doesn't affect any of my other applications, including RDP clients, so I'm not sure why this is an issue for Citrix


3

Maybe not the most popular answer, but if you love XEN, go with it. You probably know it best, are most familiar with using it, and you can use a mix of SNMP tools and monitoring agents to get a good idea of system status and performance. Why go with another solution if you have one you like and know you can work with? My personal favorite inclination is ...


3

You will always have to update some OS or virtualization platform, called dom0 or something else, no matter what you choose. You do not seriously think ESX is without updates? Given the choices and the OS in the VM's, I'd go for building a CentOS server as a Xen dom0 and then run the Debian domU's on it. CentOS will provide nice management tools, through ...


3

You can try scheduling a script to run every minute or so that appends the process list to a file: pslist >> whatever.txt Something like this might at least give you a clue as to what's going on. (pslist comes with the Sysinternals Suite)


3

It should be fine doing a defrag of the drive online, since the Xen disk images are just files like any other. You should try to do this off hours as performance will likely suffer greatly during the defrag. The reason you're seeing high fragmentation is that VDIs are sparse disk images. Even though you specify a VM has (for example) 100 GB of space ...


3

Never used that particular model, but typically, you may find the flash attached as either a MTD or IDE device. If you open it up and find that it contains something like a Compact Flash card, it is most likely connected to the IDE and can be used just like any other IDE drive. That would be your easiest way to flash it. If you open it up and find that it ...


3

Some statements to help clarify things Citrix (XenApp) is based on terminal services. The user is logged onto a terminal services session (think RDP). This is displayed in steps [5-7]. The web interface is exactly that, something that is presented in a web browser. You may be aware the application shortcut can also be in other locations. These are ...


3

I don't know much about Citrix environments, but it seems to be a feature in newer releases: Displaying Local Special Folders in Sessions To make it easier for your users to save files to their special folders locally, you can enable Special Folder Redirection. Special folders is a Microsoft term that refers to Windows folders such as ...


3

Zeal, what I have done to get virtual Ubuntu hosts is to first follow the steps on this website. This will give you an Ubuntu 10.04 Template, I then used this template with newer version's of Ubuntu server via an ISO. Although you may be best to just run 10.04 to avoid any complications which may crop up in the future. I also thought it might be worth ...


3

This can happen if you set your network configuration prior to installing the XenServer tools on the guest. Open device manager on the server, and ensure you have "Show hidden devices enabled" (View menu->Show hidden devices). If you see any additional network adapters listed, such as Realtek RTL8139 devices, remove them from device manager. Then ...


3

You have bad information. Citrix provides a equation to answer your underlying question about CPU assignments. XenServer 5.0 Update 3 Admin Guide (p. 140). http://support.citrix.com/article/CTX120713 : Provision just enough Virtual CPUs (VCPUs) for each VM's workload. Don't give a VM more VCPUs than it needs to do its work. If the server in a VM only needs ...


3

Yes, the Xen hypervisor (as well as others) will just share timeslices of the available CPUs to your virtual machines. And yes, you can overbook the amount of vCPUs. You could pin the vCPUs to physical CPU cores, but this is not required at all, in which case you let the hypervisor decide what VM gets a certain amount of timeslices of a physical CPU core. ...



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