Samir,  Short answer: Yes Long Answer:  You will want to review the I/O and MB/s utilization of the RGs in question and take a high estimate guess as to how much new load you will be putting on the RGs with the new LUNs.  Also, you want to try to ensure that RGs are used for the same type of access patterns.  In your case lets pretend that you have a LUN in RG1 that is used for Sequential Read primaraly and the new LUN you add is used for High Mixed Random I/O.  They would contend with one another and could cause performance issues.  Since these are 10K disk, I would be more careful of that happening than I would be on 15K spindles.  Also, check the write cache on the SPs to make sure that they are not over utilized (or near peak) or your adding non-similar access patterns could cause forced flushing and really kill you.  So in the long run, yes you can do it.  Just cross your I and dot your Ts. [IMAGE]
Hi All,  We've a CX3-20 running Rel 26 patch 31 and has dedicated raid group's for SAP and MS Exchange can we carve out space from this Raid group's and utilize it elsewhere. Volumes are all Raid 5 (no information why Raid 1_0 wasnt used for log files). Brief description of raid group's are follows:-    Highly appreciate all inputs.  regards, Samir
Raid Group utilization