EMC Storage Product Knowledge Sharing

Symmetrix Optimizer improves array performance by continuously monitoring access patterns and migrating devices to achieve balance across the disks in the array. This is process is carried out automatically based on user-defined parameters and is completely transparent to end users, hosts and applications in the environment. Migration is performed with constant data availability and consistent protection.Optimizer performs self-tuning of Symmetrix data configurations from the Symmetrix service processor by:· Analyzing...

A multipath requirement for different storage arrays:-All storage arrays: - Write cache must be disabled if not battery backed.Topology: - No single failure should cause both HBA and SP failover, especially with active-passive storage arrays.IBM TotalStorage DS 400 Family (formely FastT) –Defaul host type must be LNXCL or Host Type must be LNXCL orAVT (Auto Volume Transfer) is disabled in this host mode.HDS 99xx and 95xx family – HDS 9500V family (Thunder)- Requires two host modes:Host mode 1 – standardHost mode 2 – Sun...