you hear the message, you have seen the video, and now the memory savings have been verified! After an ESG report, cache the new RAM Disk overflow function, in the XenApp and XenDesktop contain 7.6 release, the potential reduce memory has costs 80 % or more. Now before you stop thinking about good read, this is to be true, think of the storage costs problem for a moment.
storage costs associated with RDS / VDI solutions for throughput and not place. We need enough throughput or IOPS have, so that the user experience does not suffer. And believe me, it can suffer dramatically, as you can easily see in this simple demonstration (special attention from the 3 to 4-minute mark J ).
To visualize how this works, the following diagrams into perspective taking
IO intended for the media. Disks are slow when compared to RAM. How the cache in RAM is with overflow function replaces RAM disk. And because RAM is not infinite, we are overrun parts of the RAM to the hard drive as needed. But this overflow is more efficient. The overflow is sequenced and in large, sequential data blocks consolidated instead of small, random blocks.
Many implementations massive SANs or expensive SSDs required. People spending large amounts of money have been in storage to reach not required for the space, but the rate of RDS / VDI. The cache RAM with overflow function, we can dramatically reduce the number of disks. We do not need to give us throughput hundreds of disks. We do not need to implement SSDs. We can drastically reduce our number of plates and more focus on storage space, which is by far easier and cheaper to implement.
According to the ESG report on Provisioning Services, when you focus on the plate throughput
- An implementation XenDesktop 26 slices require to 3
can be reduced - An implementation XenApp requires 74 disks can only 4 reduce
And because of way this feature works, it is value for multiple hypervisors offers.
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