Volumes - Dell PS4000 Configuration Manual

Equallogic ps series storage infrastructure and solutions

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

Each group can have up to 4 pools.



PS5500E, PS6500E/X and PS6510E/X must reside in a different pool from other arrays.

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PS5500E, PS6500E/X and PS6510E/X can coexist in the same pool.

Figure 3 shows a PS Series group with the maximum of 4 pools. Note the use of Pool 3 for containing

PS5500/PS6500 series arrays only. Also note that Pool 3 contains arrays that implement both 1GbE and

10GbE controllers.

Figure 3 Tiered Pools in a PS Series Group

The following best practices should be considered for storage pools:



Do not mix arrays with different drive speeds within a single pool unless they are running a

unique RAID policy



Do not mix arrays with different drive technologies (SATA, SAS, SSD) within a single pool unless

they are running a unique RAID policy.



Do not mix arrays with different controller speeds (1GbE, 10GbE) within a single pool unless

they are each running unique RAID policies.



To override the automated performance decisions for a specific volume, indicate a ―preferred‖

RAID type for that volume. If that RAID type exists within the pool, the volume will reside on

those arrays that match the preferred RAID policy for the volume.

3.3 Volumes

Volumes provide the storage allocation structure within an EqualLogic SAN. Volumes are seen on the

network as iSCSI targets by hosts and are presented to the user as disk drives once the iSCSI initiator

Dell EqualLogic Configuration Guide v11.3

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