Nytro XD introduces the concept of cache group to manage the cache devices and cached devices VDs under Nytro XD. A cache group is a collection of devices that are involved in caching. This includes both the cache devices and VDs. The Nytro WarpDrive cards are the only supported caching devices. The cached devices could be local, DAS devices, or SAN LUNs. A local DAS device could be an HDD or a RAID volume as exposed by a RAID controller. The cache group called, XD-CGRP, gets created inside Nytro XD after the cache device is added during the first-time configuration (see Using the Nytro XD Solution On MSM GUI). This is the only cache group supported in the current release of Nytro XD. All of the caching devices and the cached devices are managed under this cache group. The following figure illustrates a cache group.
Figure 3. Cache Group
DB15-000917-01 - July 2012 |
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