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Installation Guide

OceanStor 5000, 5000F, 6000, and 6000F V5 Series V500R007

This document is applicable to OceanStor 5110 V5, 5110F V5, 5300 V5, 5300F V5, 5500 V5, 5500F V5, 5600 V5, 5600F V5, 5800 V5, 5800F V5, 6800 V5, and 6800F V5 storage systems. It describes hardware installation of those storage systems for helping you easily and quickly finish the installation.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Connecting Disk Enclosures (Applicable to 5000F and 6000F Series)

Connecting Disk Enclosures (Applicable to 5000F and 6000F Series)

You can connect additional disk enclosures to a controller enclosure to expand storage space.

Prerequisites

The required installation tools and materials include:

  • Mini SAS HD electrical/optical cables
  • Diagonal pliers
  • Cable ties

Context

  • Before cascading disk enclosures, read the following to understand the distribution of interface modules or expansion modules:
    • In the rear view of a controller enclosure, ports on interface modules are identified with a number starting from 0 from the top down and have corresponding identifiers on the port modules.
    • In the rear view of a disk enclosure, expansion module A is in the upper part, and expansion module B is in the lower part. They have corresponding identifiers on the rear of the disk enclosure.
  • Before connecting disk enclosures to a controller enclosure, carefully read the following rules:
    • SAS expansion cables must be naturally bent, and a minimum of 97 mm clearance must be reserved in front of each enclosure for winding cables.
    • If a storage system is configured with two or more disk enclosures, you are advised to form multiple expansion loops based on the number of expansion ports on the controller enclosure, and ensure that the disk enclosures are evenly distributed to each loop.
    • SAS expansion modules must be installed in slots A0 and B0 of a 3 U controller enclosure and slots L0 (IOM0 for two controllers and IOM0 and IOM1 for four controllers) and R0 (IOM0 for two controllers and IOM0 and IOM1 for four controllers) of a 6 U controller enclosure.
    • A pair of SAS ports can be connected to a maximum of four disk enclosures and one disk enclosure is recommended.
    • V5 F series only support the 2 U SAS disk enclosure.
  • Except for the configuration disk enclosure that is directly connected to controller A and controller B, all other disk enclosures in the same loop are connected by two independent links. To be more specific, the forward and backward connection mode is used for optimal network reliability.
NOTE:

For the loops shown in Figure 6-16, Figure 6-17, Figure 6-18, and Figure 6-19, the red and green cables represent two independent links that are redundant for each other. The way to set up a loop where the configuration disk enclosure resides is different from the way to set up other types of loops. The black cables in Figure 6-17, Figure 6-18, and Figure 6-19 represent the difference.

The following figures provide cable connection guidance for cascading disk enclosures:
  • Common disk enclosures
    • 2 U controller enclosure

    Figure 6-16 shows an example of how a 2 U controller enclosure with mini SAS HD ports is connected to one disk enclosure using mini SAS HD electrical/optical cables. You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).

    Figure 6-16 2 U controller enclosure connected to one disk enclosure

    • 3 U controller enclosure

    Figure 6-17 shows an example of how a 3 U controller enclosure with mini SAS HD ports is connected to two disk enclosures using mini SAS HD electrical/optical cables. You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).

    Figure 6-17 3 U controller enclosure connected to two disk enclosures
    NOTE:

    The first disk enclosure that is connected to port P0 of slots A0 and B0 on a 3 U controller enclosure must be a disk enclosure with coffer disks.

    • 6 U controller enclosure

    Figure 6-18 and Figure 6-19 show an example of how a 6 U controller enclosure with two controllers is cascaded with two disk enclosures and a 6 U controller enclosure with four controllers is cascaded with four disk enclosures using mini SAS HD electrical/optical cables through mini SAS HD ports. You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).

    Figure 6-18 6 U controller enclosure with two controllers and cascaded with two disk enclosures
    Figure 6-19 6 U controller enclosure with four controllers and cascaded with four disk enclosures
    NOTE:

    To ensure proper system running when a 6 U controller enclosure has four controllers configured, comply with the following rule when completing the connections: The first SAS port of the 12 Gbit/s SAS interface modules inserted in slots L5 and R5 of a 6 U controller enclosure must be connected to a disk enclosure with coffer disks.

Procedure

  1. Connect expansion port P0 on slot A0 of the controller enclosure to the P0 expansion port on expansion module A of disk enclosure 1.
  2. Connect expansion port P0 on slot B0 of the controller enclosure to the P0 expansion port on expansion module B of disk enclosure 1.
  3. Connect expansion port P1 on slot A0 of the controller enclosure to the P0 expansion port on expansion module A of disk enclosure 2.
  4. Connect expansion port P1 on slot B0 of the controller enclosure to the P0 expansion port on expansion module B of disk enclosure 2.

    NOTE:
    • The procedure uses a 3 U controller enclosure connected to two disk enclosures as an example to describe how to connect cables.
    • Disk enclosure 1 is typically the configuration disk enclosure.

    After disk enclosures are connected and powered on, do not change their positions in the storage system. Otherwise, IDs of disk enclosures may be displayed incorrectly, service performance may deteriorate, or some storage resources may be unavailable.

  5. Lay out and bind mini SAS cables.

    NOTE:

    For details about how to lay out and bind cables, see General Cable Routing Principles and Cable Routing and Bundling Basics.

Follow-up Procedure

If SAS cables need to be removed during the installation, perform the following steps. The operations of removing a SAS optical cable are similar. SAS cable is used as an example here.

  1. Grip the SAS cable and push the connector slightly inward, as shown in Figure 6-20.
    Figure 6-20 Pushing the connector slightly inward

  2. Hold the plastic ring and pull it outward in the arrow direction until the SAS cable is unlocked, as shown in Figure 6-21 and Figure 6-22.
    • Figure 6-21 shows the top view of removing a SAS cable.
    • Figure 6-22 shows the bottom view of removing a SAS cable.
    Figure 6-21 Top view of removing a SAS cable

    Figure 6-22 Bottom view of removing a SAS cable

  3. Pull out the SAS cable connector out of the cascading port entirely.
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Updated: 2019-07-11

Document ID: EDOC1000181531

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