This is because you run Leopard and Windows separately and therefore when one is running the other is not active. The only thing that controls how much RAM Windows sees/uses is determined by the type of Windows you have installed (32BIT or 64BIT). Feb 15, 2017 - A Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor. About 500 MB of disk space on the boot volume (Macintosh HD) for Parallels Desktop installation. About 15 GB of disk space for each virtual machine. I'm considering upgrading the PC to a MacBook Pro and installing, and would like advice from other ArcGIS Desktop users who have done this. The performance aspects of VM-ware are considered in, but are there any other issues to be aware of? How is the file system handled when defining layers in ArcMap, when on a Mac? Eg, is there a concept of the C: drive? Is the Windows file system handled by Parallels (with Windows 7 installed)? I only need occasional access to ArcGIS Desktop, so performance isn't a huge concern. I'd like to hear of any other problems that I should consider before committing. I still have to resort to ArcGIS in a virtual machine from time to time on my Macbook, and have experimented with performance issues over the years. As @Chad Cooper mentions, XP will feel very snappy indeed. So does Win7 but it's worth taking the time to tweak it (get rid of Aero, replace the default 'find' with 'everything' app, etc; lots of advice about that online). As far as the windows VM is concerned, it has its own hard drive and the Mac doesn't exist - but the VM software lets you share folders which appear as network shares. As far as performance goes, the interface with the file system is, indeed, your biggest issue. The most convenient way to work with your data is to keep it all in a shared folder within your Mac filesystem, so that files are accessible to both. That's a great way to keep track of your data, particularly when using something like GISLook to preview rasters and vector data in OSX. ![]() You take an enormous performance hit when the VM is accessing files on a shared directory! When testing GIS operations in a not-terribly-complex project (2 DEM rasters, 20-30 simple shapefiles), both calculations and display were affected by the location of the files: • Shared folders - 40 seconds to run operations; • Shared folders MAPPED as drives within XP - 15-20 seconds; • All GIS data in the virtual drive - 5 seconds. This was with VMWare 3.x 18 months ago or so - but things change, and I hear the performance of both Parallels and VMWare and Virtualbox are much improved in comparison! My current solution: I have a 'Data' D: drive which is a virtual hard drive (VirtualBox) that mounts with the C: system drive - I synchronise the data directories with shared folders on the mac to keep things tidy. Keeping the D drive separate keeps its size down and lets me back it up separately in Time Machine. Tip: create a 'sparse image' in Disk Utility, and create your virtual hard drive inside it. Let Time Machine back up only that image, not the main C drive (main VM file). 'Sparse disk images' are interpreted differently, and only the individual blocks of data that have changed get Time Machined on backup, instead of the whole giant file. How is the file system handled when defining layers in ArcMap, when on a Mac? Eg, is there a concept of the C: drive? Is the Windows file system handled by Parallels (with Windows 7 installed)? When you use a virtualization platform like Parallels, your computer is effectively divided into a host and a guest OS. In your case, OS X is the host OS whereas Windows 7 is the guest OS.The guest OS would have its own hard disks and virtual hardware. Your ArcGIS install will reside in this virtual hardware and this is all it will see. The best music library organizer for mac. As far as it is concerned, it's installed on a Windows machine. Any data you want to manipulate would have to be placed in the guest OS' hard disks. So yes, it will be like using it in Windows, C: drives and all. You work as if you would on Windows. You could share data with your Mac host OS through which the guest OS sees as mounted network folders.
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