Getting Started with Nytro XD Solution : Cache Group Overview

Cache Group Overview

Nytro XD introduces the concept of cache group to manage the cache devices and VDs under Nytro XD. A cache group is a collection of devices that are involved in caching. This includes both the caching devices (also termed caching devices) and cached devices. 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 can be a 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 the Using the Nytro XD Solution On MSM GUI topic). This is the only cache group supported in the current release of Nytro XD solution. 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