In addition to Ankur's comments, ideally the pool should be sized for performance and the required PiT history requirement. Using NL-SAS drives usually translates to a requirement for more drives. Similarly, so does the use of RAID 6. On this basis, as a compromise between cost and performance, we usually recommend 10 or 15K RAID 5 4+1 in a single homogenous pool as opposed to RAID 1/0 or RAID 6.  Note that although RP applies some optimization where writes are concerned to the journal (accumulated large writes), the journal distribution is dependent on the overall MB/s performance (bandwidth).  Regards,  Rich
I am about to create a VNX 8000 resource pool for RecoverPoint journal volumes and repository volume.  What is the recommended best practice for pool tiers when creating a VNX pool for RecoverPoint journal volumes and repository volume?  1). Single Tier: Capacity NL-SAS tier: 6+2 or 8+2 RAID 6  Or  2). Two Tiers: Performance SAS tier: 4+1 or 8+1 RAID 5 and Capacity NL-SAS tier: 6+2 or 8+2 RAID 6   If two tiers are recommended, what is the percentage for each tier?  And finally, is there a best practices document for this subject?  Thank you.
Creating VNX Pool Best Practice for RecoverPoint