Hi  markwragge, I recommend checking out the following white paper for configuring your AX4 array.  I has a very good section on building your raid groups to avoid disk contention for your host.  Please check out Chapters 3 and 4 of White Paper: EMC CLARiiON Storage System Fundamentals for Performance and Availability — Applied Best Practices which can be found on Home > Support > Technical Documentation and Advisories > Hardware/Platforms Documentation > CLARiiON AX Series Systems > CLARiiON AX4 > White Papers.  You can find White Papers at this location on Powerlink:  Home > Support > Technical Documentation and Advisories > White Papers > All White Papers  I recommend reading the entire document as it has some valueble information for understanding performance and configuring your array..  Thanks, Kristi
Hi, i am looking at a design of an ax400 disk system. The system will have a mixture of Raid1_0 and Raid 5 groups. There will be about 50 luns in total. Some of these luns will be used for OS boot from san. Our intention is that the boot from san luns will be on a raid 1_0 and so will application logs.  As the ax400 will contain disks that will be 300, 450 or 600gb disks each raid group will be at least 300gb in size. Most of our luns will be 10gb to 15gb in size with one or two larger luns. We will have a single disk tray with two raid groups.  I am concerned that there will be too many hosts accessing luns from each of the raid groups. There will be about 15 hosts in total.  Should i be worried about disk contention when i have a single raid group with approx 15 or more luns which are accessed by up to 15 hosts?  Thanks
lots of luns on a single raid group