 that was a long time ago with old DAE's that actually used P-ATA disks now its no longer necesssary to have all LUNs from a S-SATA RG assigned to the same SP   thats how it works with FC drives - I think with S-ATA we only stripe two LUNs  I guess for S-ATA that's because mostly customers added just one S-ATA DAE and you wont get more than two RG's and also that we expected S-ATA to be used for more archive purposes  The is no general answer - it really depends on the workload. AVM tries to do a good compromise for most workloads  I would avoid double striping though  -I'm assuming this is if you create a stripe based off d#'s from a single RG? Not creating an A stripe and a B stripe from, say 2 RGs.  yes - there is a classic slide in the EMC world performance talk that show this for a single RG    no - I would say that unless you really know the setup of your box and the Celerra best practices you should be using AVM. Its a lot easier to create configs with MVM that perform worse than AVM than the other way around.  The only other exception is if you are using an EMC blueprint - like the templates we have tested for Exchange or SQL - they are based on MVM and well tested in our labs.  Of course AVM needs a number of disks/LUNs/RGs to work well - but if you only have a few disks than your options are limited anyway
Hello All,  I've searched the forums and found that BP w/ SATA drives is to keep each RG on a single SP. If I will be presenting 2 Raid5 (6+1 in this case) to a 960 and would like to get the " "best performance" ", I would normally create a custom stripe across the d numbers on spA and spB, then create a master stripe. If I create each SATA RG on their own individual SPs, should I do the same technic as before, should I create both RGs on the same SP or should I forget about the Master Stripe all together?  Thanks In Advance.  Chris
SATA Drives with Celerra and MVM