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HPE D3000 Disk Enclosures - Cabling

Large Form Factor (LFF) D3600 disk enclosures - maximum capacity configuration

This example illustrates cabling for a single-domain configuration. In this configuration, note the following:

  • P1 on the disk enclosure I/O module is treated as the SAS in port.

  • P2 on the disk enclosure I/O module is treated as the SAS out port.

  • In single-domain configurations, one cable path is created between the host, the primary disk enclosure, and additional cascaded disk enclosures.

  • In dual-domain configurations, two cable paths are created between the host, the primary disk enclosure, and additional cascaded disk enclosures.

Item
Description
1
Host (server or controller enclosure)
2
Primary disk enclosure
3
Additional cascaded disk enclosures

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Small Form Factor (SFF) D3700 disk enclosures - maximum capacity configuration

This example illustrates cabling for a single-domain configuration. In this configuration, note the following:

  • P1 on the disk enclosure I/O module is treated as the SAS in port.

  • P2 on the disk enclosure I/O module is treated as the SAS out port.

  • In single-domain configurations, one cable path is created between the host, the primary disk enclosure, and additional cascaded disk enclosures. (Shown in below figure)

  • In dual-domain configurations, two cable paths are created between the host, the primary disk enclosure, and additional cascaded disk enclosures.

Item
Description
1
Host (server or controller enclosure)
2
Primary disk enclosure
3
Additional cascaded disk enclosures

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Dual domain example - best fault tolerance cabling

This example illustrates cabling for a dual-domain configuration in a pattern that offers best possible fault tolerance. In this configuration, note the following:

  • A multi-port, dual-domain controller in the host and dual-port disk drives in the disk enclosure are required for dual-domain deployments.

  • Cables from each I/O module in the disk enclosure to the server or controller enclosure and to additional cascaded disk enclosures provide dual-domain connectivity.

  • The reversing of the cable paths ensures access to the storage, even if the controller, cable, enclosure I/O module, or enclosure power supply fails.

  • This example illustrates using a disk enclosure with one additional cascaded disk enclosure. More than one additional disk enclosure can be cascaded.

Item
Description
1
Primary path
2
Host (server or controller enclosure)
3
Additional path
4
Primary disk enclosure
5
Additional cascaded disk enclosure

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Dual domain - best performance cabling

This example illustrates cabling for a dual-domain configuration in a pattern that offers best possible performance. In this configuration, note the following:

  • A multi-port, dual-domain controller in the host and dual-port disk drives in the disk enclosure are required for dual-domain deployments.

  • Cables from each I/O module in the disk enclosure to the server or controller enclosure and to additional cascaded disk enclosures provide dual-domain connectivity.

  • The symmetrical cabling pattern lowers latency and provides best possible performance.

  • This example illustrates using a SFF disk enclosure with one additional cascaded disk enclosure. When using LFF disk enclosures, more than oneadditional disk enclosure can be cascaded.

Item
Description
1
Primary path
2
Host (server or controller enclosure)
3
Additional path
4
Primary disk enclosure
5
Cascaded disk enclosure

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Dual domain - alternative cabling

This example illustrates cabling for a dual-domain configuration in a pattern that offers a balance of fault tolerance and performance. In this configuration, note the following:

  • A multi-port, dual-domain controller in the host and dual-port disk drives in the disk enclosure are required for dual-domain deployments.

  • Cables from each I/O module in the disk enclosure to the server or controller enclosure and to additional cascaded disk enclosures provide dual-domain connectivity.

  • The crossing of the cables between each disk enclosure offers both good fault tolerance and good performance, but may be confusing to implement and maintain.

  • This example illustrates using a SFF disk enclosure with one additional cascaded disk enclosure. When using LFF disk enclosures, more than one additional disk enclosure can be cascaded.

    NOTE: This cabling scheme is supported for use only when the disk enclosure is connected to a smart array controller.
Item
Description
1
Primary path
2
Host (server or controller enclosure)
3
Additional path
4
Primary disk enclosure
5
Cascaded disk enclosure

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Legal Disclaimer: Products sold prior to the November 1, 2015 separation of Hewlett-Packard Company into Hewlett Packard Enterprise Company and HP Inc. may have older product names and model numbers that differ from current models.

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Document title: HP D3000 Disk Enclosures - Cabling
Document ID: emr_na-c05105559-2
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