1. Dataram Ram Disk License Key

System 2 Benchmark results: RAMDisk left, OCZ SSD RightThe speed differentials shown are seriously surprising. System 1 shows a 15-fold speed-up for sequential read, and a 29-fold boost for sequential read. 512K reads jump 14-fold, writes 26-fold.

4K reads leap just over 10-fold, and writes 3-fold. 4K access with a queue depth of 32 improves by 260% for reads, and about 220% for writes. System 2 shows a nearly 13-fold speedup for sequential read and a 57-fold speed-up for sequential write! 512K reads again show a 13-fold speedup, and writes improve 45-fold. 4K reads show a 16-fold boost, and write jump 7-fold. 4K access with a queue depth of 32 improves by 240%, for both reads and writes.What you can see in both cases is that the switch to a RAM disk can boost I/O performance considerably, sometimes by more than an order of magnitude.

For those in search of speed, this is probably enough to justify adoption and use. Fortunately, it’s neither terribly expensive, nor terribly difficult to achieve. Obtaining and Installing Dataram RAMDiskA quick hop to the will enable you to purchase either a personal or commercial use license for RAMDisk in minutes. Subsequent to purchase, you’ll get a download link and license key via e-mail (you can also use the key to convert the free version to a full commercial version, if you’ve already downloaded same). An installation wizard drives the RAMDisk installation process, which takes less than five minutes to complete, as illustrated in Figures 3-9.

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The Load/Save tab is where you define where to load your RAM disk image at startup, and where to save that image at shutdown (or whenever you manually use the Stop RAMDisk button to halt RAM disk operation when Windows keeps running). A Save Disk Image Now button also lets you save a RAM disk image to permanent storage whenever you like. The Event Log tab lets you scan the built-in Windows System Log to pull out RAMDisk related events (useful for troubleshooting, but otherwise not terribly informative). The Options tab provides control over timeout values, and lets you omit creating a backup file when saving a disk image, turn off compression on NTFS filesystems, or clear RAMDisk memory when you exit the program.Basic configuration and setup is pretty easy, and takes no more than a couple of minutes to complete. I recommend that you consider your runtime memory needs carefully, and allocate no more RAM to a RAM disk than you can spare from other uses.

Dataram Ram Disk License Key

On my 24GB i7 930 system, I set up an 8GB RAM disk; on my 32GB i7 2600K system, I went with a 12GB RAM disk instead. In each case, I decided to leave myself 4-8GB for OS runtime use, and the remainder (0-4GB on the 930, 8-12GB on the 2600K) for applications and virtual machines I typically run. But Wait, There’s Still More to Do!At this point, you’ve set up a RAM disk all right, but until you make some additional Windows system-level changes, you won’t be using the RAM disk to help speed up your PC. This requires tackling various tasks related to default storage locations that Windows normally targets at your system drive (that is, the drive where the Windows operating system resides, as stored in the%SystemDrive% environment variable).The most common speed-ups applied with RAMDisk include:. Retargeting the TMP and TEMP user variables to the RAMDisk device, as shown in Figure 12 (I labeled mine O: on my test systems; you can pick any unused drive letter you like as you set up your RAM disk). You can do this at the command line by typing SET TMP and SET TEMP, or use the System Properties item in Control Panel, Environment Variables to edit such changes instead.

If your RAMDisk is large enough, you can move some or all of your paging file to that drive. You’ll want to leave at least 2GB of paging file on the system disk, for mini crash dumps should your PC ever bluescreen, and you’ll probably have to experiment to find the right space allocation balance between your system drive and your RAM disk. Here’s what my current configuration looks like on my i7 930 PC (in the System Properties item in Control Panel, click Settings in the Performance pane, then click the Change button in the Virtual memory pane, to get to the window shown in Figure 14). In general, any time an application allocates scratch or temporary storage for its own use, you can find a way in Windows to retarget the location to a RAM disk if you dig into its performance tweaking capabilities. On my own systems, I also retarget scratch storage for Windows Office applications, but that’s pretty much where my tweaking stops. You can take this effort as far as you like, and achieve some modest performance gains as a result.

Potential GotchasUsing a RAM disk does come with some potential gotchas, about which readers must be aware. Because the RAM disk lives in volatile memory, if your system ever blue screens or freezes (forcing a manual reboot), you’ll lose the contents of virtual memory back to the most recent snapshot (most likely, the contents as of your last successful boot, unless you’ve manually saved RAM disk contents since then). This can be a little vexing, and will also affect MS Office applications’ abilities to auto-recover from failure (they store their working files in the temporary directories, which will be trashed whenever your system crashes for any reason). You must be prepared to accept this risk (“Save early, save often!” as the old mantra goes) to use a RAM disk without undue aggravation or regrets.Also, whenever you turn off the RAMDisk, you’ll have to restore your temporary file settings to get most applications to work properly. That’s why it’s a good idea to keep a log of all your storage targeting resets (and the original values) so that you can put things back the way they were if you must turn off your RAM disk for any reason.

For Max Speed, RAM Disks Rule!But if you want to squeeze the most oomph out of any system, as long as you can spare the RAM for storage—instead of runtime use for the OS, applications, or VMs—there’s no faster form of storage than a RAM disk. Use one well and wisely, and you’ll find yourself working in a snappier Windows environment. But be prepared to tweak and tune to get things right, and remember how to restore your runtime environment to original factory settings, so you can turn off the RAM disk and keep on running should you ever need to.