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The following table provides definitions for some terms that are used in this document:
Term | Definition |
2-port card | PowerStore 1000 and higher models require a two 100 GbE optical QSFP port card to support NVMe Expansion Shelves. |
4-port card | A card for each node that provides four ports. Options include 25 GbE optical and 10 GbE Base-T. PowerStore 500 requires the 25 GbE card to support the NVMe Expansion Shelf. The 4-port mezzanine card supports federate storage (that is, cluster multiple PowerStore appliances) and nonblock storage. PowerStore 3.0 supports a new 100 GbE 4-port card in I/O module for slot 0 in PowerStore x000 and x200 models. |
Appliance | The appliance is the base enclosure and any PowerStore system. |
Base enclosure | With PowerStore 3.0, the base enclosure contains 25 NVMe drive slots. PowerStore 3.0 can also scale outside the base enclosure with NVMe expansion shelves. For more information, see Expansion enclosure in this table. With PowerStore 2.0, NVMe drives cannot scale outside the base enclosure. If PowerStore 2.0 needs to be scaled out, one or more SAS expansion shelves must be used. |
Cluster | A cluster is a group of one to four PowerStore appliances. PowerStore T model clusters are expandable by adding more appliances (up to four total). |
Expansion enclosure | Enclosures that can be attached to a base enclosure to provide additional storage in the form of either NVMe or SAS drives. A maximum of three 25-drive expansion shelves are supported. Depending on the PowerStore model, the expansion enclosure must either be a NVMe expansion enclosure, or a SAS expansion enclosure. Mixing expansion enclosure types is not supported. PowerStore 3.0 models x200 support only NVMe expansion shelves. PowerStore 2.0 models x000 support only SAS expansion shelves. |
Embedded module | With PowerStore 3.0 models x200, a new and improved embedded module v2 is embedded on each node providing:
PowerStore 3.0 model 500 does not have an embedded module. It uses a 4-port 25 GbE optical mezzanine card. Ports 0 and 1 are used for the system bond. The bonded ports are used for federation and NAS. Ports 2 and 3 of the four mezzanine ports are required and reserved for back-end connectivity to support NVMe expansion shelves. With PowerStore 2.0 models x000, the embedded module v1 is needed for SAS expansion (SAS BE-ports) and only available and required on PowerStore x000 modules. For PowerStore 2.0 model 500, the 4-port 25 GbE optical mezzanine card on embedded module v1 is not required. It is only required if the system will be configured for:
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Node | The component within the base enclosure that contains processors and memory. Each appliance consists of two nodes. |
NVMe over Fibre Channel (NVMe/FC) | NVMe/FC allow hosts to access storage systems across a network fabric with the NVMe protocol using Fibre Channel as the underlying transport. To use NVMe/FC, the host operating system must support NVMe protocols. OL 8 supports the NVMe protocol and was used for this paper. |
NVMe over TCP (NVMe/TCP) | NVMe/TCP allow hosts to access storage systems across a TCP fabric with the NVMe protocol using TCP protocol as the underlying transport. NVMe/TCP connectivity can be enabled on the same ports as iSCSI, or on different Ethernet ports. To use NVMe/TCP, the host operating system must support NVMe protocols. |
PowerStore Manager | PowerStore Manager is a web-based user interface (UI) for storage management. |