DES-1D12 Exam Dumps : Specialist - Technology Architect Midrange Storage Solutions Exam

DELL PDF document about dynamic pools: h16289-dell_emc_unity-dynamic_pools.pdf

Page 20-21. The smallest RAID 5 stripe width the system supports is a 4+1. The smallest dynamic pool created with the RAID 5 4+1 configuration is 6 drives. The minimum drive count includes the number of drives specified in the stripe width, plus the hot spare capacity. The hot spare capacity is selected by the user at pool creation, and can either be set to 1 or 2 drives for every 32 drives in the pool.

The maximum number of SAS buses per SP for a Dell Unity XT 480F without an additional SAS I/O module is 2. Each Dell Unity XT 480F has 2 Service Processors (SPs) and each SP has 2 SAS buses, for a total of 2 SAS buses per SP. SAS buses are used to connect the storage drives to the SPs and to the storage array. Each bus can support multiple drives and provide high-speed data transfer between the drives and the SPs.