Drafting the Connection Topology for Smart Disk Enclosures
The connection topologies are the diagrams illustrating how to connect cables between controller enclosures and disk enclosures. The topologies help you correctly connect cables during expansion execution.
OceanStor 5300 V5 (SAS) and 5300F V5 (SAS)
You can either create a loop or use the existing loop to expand a disk enclosure. You are advised to create a loop for the expansion.
- The number of disk enclosures that are cascaded cannot exceed the upper limit in specifications. Otherwise, new disks cannot be added to the storage system.
- Smart disk enclosures are deployed in single-uplink networking.
- All cascading cables are connected in forward mode. For details, see Connecting Smart Disk Enclosures to 2 U Controller Enclosures.
You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).
Ports and Slots for Cascading Disk Enclosures
You can install 100 Gbit/s RDMA expansion modules in slots IOM 0, 1, and 2 to connect to disk enclosures, as shown in the yellow area in the figure.
The priorities of the slots for installing expansion modules are as follows: IOM 2 > IOM 1 > IOM 0.
Expanding Capacity in a New Loop
The following example describes how to add a disk enclosure using the remaining idle expansion ports.
Expanding Capacity in Existing Loops
If the controller enclosure has no available expansion ports, and the number of disk enclosures in each loop does not surpass the specification limits, you can expand capacity by adding disk enclosures to the existing loops.
The following example describes how to add a disk enclosure to an existing loop.
OceanStor 5300 V5 (NVMe) and 5300F V5 (NVMe)
You can either create a loop or use the existing loop to expand a disk enclosure. You are advised to create a loop for the expansion.
- The number of disk enclosures that are cascaded cannot exceed the upper limit in specifications. Otherwise, new disks cannot be added to the storage system.
- Smart disk enclosures are deployed in single-uplink networking.
- All cascading cables are connected in forward mode. For details, see Connecting Smart Disk Enclosures to 2 U Controller Enclosures.
You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).
Ports and Slots for Cascading Disk Enclosures
You can install 100 Gbit/s RDMA expansion modules in slots IOM 0, 1, and 2 to connect to disk enclosures, as shown in the yellow area in the figure.
The priorities of the slots for installing expansion modules are as follows: IOM 2 > IOM 1 > IOM 0.
Expanding Capacity in a New Loop
The following example describes how to add a disk enclosure using the remaining idle expansion ports.
Expanding Capacity in Existing Loops
If the controller enclosure has no available expansion ports, and the number of disk enclosures in each loop does not surpass the specification limits, you can expand capacity by adding disk enclosures to the existing loops.
The following example describes how to add a disk enclosure to an existing loop.
OceanStor 5500 V5, 5500F V5, 5600 V5, 5600F V5, 5800 V5, and 5800F V5
You can either create a loop or use the existing loop to expand a disk enclosure. You are advised to create a loop for the expansion.
- The number of disk enclosures in all expansion modes cannot exceed the specifications. Otherwise, new disks cannot be added to the storage system.
- Smart disk enclosures are deployed in single-uplink networking.
- All cascading cables are connected in forward mode. For details, see Connecting Smart Disk Enclosures to 2 U Controller Enclosures.
You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).
Ports and Slots for Cascading Disk Enclosures
You can install 100 Gbit/s RDMA expansion modules in slots IOM 0, 1, 2, 3, 4, and 5 to connect to smart disk enclosures, as shown in the yellow area in the figure.
The priorities of the slots for installing expansion modules are as follows: IOM 5 > IOM 4 > IOM 3 > IOM 2 > IOM 1 > IOM 0.
Expanding Capacity in a New Loop
The following example describes how to add a disk enclosure using the remaining idle expansion ports.
Expanding Capacity in Existing Loops
If the controller enclosure has no available expansion ports, and the number of disk enclosures in each loop does not surpass the specification limits, you can expand capacity by adding disk enclosures to the existing loops.
The following example describes how to add a disk enclosure to an existing loop.
OceanStor 6800 V5, 6800F V5, 18500 V5, 18500F V5, 18800 V5, and 18800F V5
You can either create a loop or use the existing loop to expand a disk enclosure. You are advised to create a loop for the expansion.
- The number of disk enclosures that are cascaded cannot exceed the upper limit in specifications. Otherwise, new disks cannot be added to the storage system.
- Smart disk enclosures are deployed in single-uplink networking.
- All cascading cables are connected in forward mode. For details, see Connecting Smart Disk Enclosures to 4 U Controller Enclosures.
You can obtain more network diagrams from Huawei Storage Product Networking Assistant (https://support.huawei.com/onlinetoolsweb/sna/#/home).
Ports and Slots for Cascading Disk Enclosures
You can install 100 Gbit/s RDMA expansion modules in slots IOM H1/L1 to IOM H12/L12 to connect to disk enclosures, as shown in the yellow area in the figure.
The priorities of the slots for installing expansion modules are as follows: IOM H6/L6 > IOM H7/L7 > IOM H5/L5 > IOM H8/L8 > IOM H4/L4 > IOM H9/L9 > IOM H2/L2 > IOM H11/L11> IOM H1/L1 > IOM H12/L12 > IOM H3/L3 > IOM H10/L10.
Expanding Capacity in a New Loop
The following example describes how to add a disk enclosure using the remaining idle expansion ports.
Expanding Capacity in Existing Loops
If the controller enclosure has no available expansion ports, and the number of disk enclosures in each loop does not surpass the specification limits, you can expand capacity by adding disk enclosures to the existing loops.
The following example describes how to add a disk enclosure to an existing loop.
