Dell PowerVault MD1220 Getting Started Guide - Page 9

Technical Specifications - front

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Technical Specifications Drives SAS hard drives Up to 24 2.5-inch SAS hot-swappable hard drives (3.0 Gbps and 6.0 Gbps) Enclosure Management Modules (EMMs) EMMs One or two hot-swappable modules with temperature sensors and an audio alarm Connectivity Configurations Support for either of the following configurations: • Unified mode for direct connectivity to 24 hard drives per enclosure. - Up to four daisy-chained storage enclosures for a total of 96 hard drives per controller port and 192 hard drives per controller. - Maximum configuration of two dual port controllers per server for a total of 384 drives. - Redundant path connectivity provides redundant data paths to each hard drive. Redundant path configuration supports up to four daisy-chained storage enclosures for a total of 96 hard drives per controller and up to 192 hard drives per server. • Split mode with dual EMMs provides a direct connectivity to drives 0 through 11 and a separate direct connectivity to drives 12 to 23. Split mode configuration does not support daisy-chaining or redundant data paths. Getting Started With Your System 7

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Getting Started With Your System
7
Technical Specifications
Drives
SAS hard drives
Up to 24 2.5-inch SAS hot-swappable hard
drives (3.0 Gbps and 6.0 Gbps)
Enclosure Management Modules (EMMs)
EMMs
One or two hot-swappable modules with
temperature sensors and an audio alarm
Connectivity
Configurations
Support for either of the following
configurations:
•
Unified mode for direct connectivity to
24 hard drives per enclosure.
– Up to four daisy-chained storage
enclosures for a total of 96 hard drives
per controller port and 192 hard drives
per controller.
– Maximum configuration of
two dual port controllers per server for
a total of 384 drives.
– Redundant path connectivity provides
redundant data paths to each hard drive.
Redundant path configuration supports
up to four daisy-chained storage
enclosures for a total of 96 hard drives
per controller and up to 192 hard drives
per server.
•
Split mode with dual EMMs provides a
direct connectivity to drives 0 through 11
and a separate direct connectivity to
drives 12 to 23. Split mode configuration
does not support daisy-chaining or
redundant data paths.