Before going to the basic understanding of the disksets let us first know the necessity for disksets in solaris there are many prime reasons people prefer for going into disksets

1. Availability
2. Redundancy
3. Efficiency

Availability: Disksets are more reliable under sun cluster environment but not limited to HA they are even highly available out of the HA concept as well (Fail over Configuration)

Redundancy: Always a first and foremost term when it comes to disk management .this can be achieved via disksets with RAID being built over the disks from the disksets

Efficiency:  This can be spoken in two terms  on the aspect of system administration ,with help of disksets we can efficiently organize the metadevices under diskgroups   ,reuse the same metadevices on the different host(metaimport) , same diskset could be reused on another node via metaimport ,provided if the disk are externally connected (storage).This sometimes happens in cases like if the RAIDs are needed to be maintained and used on a diifernt system in other words if we want to use the same LUNS on other system . So far, I have not tried but will be doing this very soon, we will share the same as soon as possible  on gurkulindia

Requirement:

If availability comes as a first choice as a sys admin then the prime requirement for an disksets to be created under solaris volume manager is this ,The disk used should be visible on two hosts with the same device number and the shared disk should always use the same device driver by this is not applicable when the disksets are not multiowned by the hosts Full Story

Herein I will present the procedure on how to add a new disk to an SVM which is part of sun cluster 3.2 which indeed is used in to extend an existing FS in SUN Cluster.

Note: Concepts of metasets in SVM and multipating in solaris are used in the post. You better to get some info. On the same. We will also try to post the concepts of metaset under SVM in our coming Posts. Posts on Multipathing are already present at our gurkulindia. Better to go through them and then proceed further with this post. Full Story