What code version is the Unity Running? If 4.2.x, then chek the new White Paper "docu85573_Dell-EMC-Unity--Dynamic-Pools---Overview.pdf" - there is a good explanation of how to configure Pools using Dynamic Pools, which does allow a mix of different SAS types in the same pool.
But a word of caution (as once you create the Pool you can't undo unless you destroy the Pool). Mixing different speed (rotational speed) will cause some uneven performance in the Pool when you access the 10K vs the 15K disks.
The Best practice guide shows the difference between the 10K and 15K for IOPS - 10K can do about 250 IOPS per disk and 15K can do about 350 IOPS per disk - when you access data on the 10K disks latency will be higher than data residing on the 15K disks. Ideally you would have two Pools - a 10K Pool and a 15K pool.
kelleg
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March 27th, 2018 07:00
What code version is the Unity Running? If 4.2.x, then chek the new White Paper "docu85573_Dell-EMC-Unity--Dynamic-Pools---Overview.pdf" - there is a good explanation of how to configure Pools using Dynamic Pools, which does allow a mix of different SAS types in the same pool.
But a word of caution (as once you create the Pool you can't undo unless you destroy the Pool). Mixing different speed (rotational speed) will cause some uneven performance in the Pool when you access the 10K vs the 15K disks.
The Best practice guide shows the difference between the 10K and 15K for IOPS - 10K can do about 250 IOPS per disk and 15K can do about 350 IOPS per disk - when you access data on the 10K disks latency will be higher than data residing on the 15K disks. Ideally you would have two Pools - a 10K Pool and a 15K pool.
glen