Application servers An application server is a host that is attached to the system, either by a SAN or by iSCSI, and that runs applications.
Array configurations
An array is an ordered collection, or group, of physical devices (disk drive or flash drive modules) that is used to define logical volumes or devices. An array is a type of MDisk that is made up of disk drives; these drives are members of the array. A Redundant Array of Independent Disks (RAID) is a method of configuring member drives to create high availability and high performance systems.
Canisters Canisters are hardware units that are subcomponents of enclosures.
Capacity indicators The system uses base-2 (binary numeral) as capacity indicators for volumes, drives, and other system objects. The management GUI and the command-line interface (CLI) use different abbreviations to indicate capacity, but the value for these capacity indicators is the same.
Copy offload
Offloaded data transfer (ODX) is a feature in MicrosoftWindows Server 2012. ODX function frees up hosts and speeds the copy process by offloading the entire orchestration to a storage array.
Copy Services functions The system provides Copy Services functions that can be used to improve availability and support disaster recovery.
Data migration Lenovo Storage V7000 allows you to migrate data across MDisks without interfering with any host applications that are simultaneously accessing or writing data.
Drives The system supports a range of enterprise-class, nearline-class or flash drives. A drive object represents the physical drive. The system creates this object automatically when a supported drive is detected and a drive ID is assigned.
Easy Tier function Lenovo Storage V7000 includes Easy Tier ®, a function that responds to the presence of drives in a storage pool that also contains hard disk drives (HDDs). The system automatically and nondisruptively moves frequently accessed data from HDD MDisks to flash drive MDisks, thus placing such data in a faster tier of storage.
Enclosures An enclosure is the basic housing unit for the system. It is the rack-mounted hardware that contains all the main components of the system: canisters, drives, and power supplies. The term enclosure is also used to describe the hardware and other parts that are plugged into the enclosure.
External storage systems An external storage system, or storage controller, is a device that coordinates and controls the operation of one or more disk drives. A storage system synchronizes the operation of the drives with the operation of the system as a whole.
Host mapping Host mapping is the process of controlling which hosts have access to specific volumes within the system.
Host objects
A host object is a logical object that represents a list of worldwide port names (WWPNs) and a list of iSCSI names that identify the interfaces that the host system uses to communicate with the Lenovo Storage V7000 system. Fibre Channel and SAS connections use WWPNs to identify the host interfaces to the systems. iSCSI names can be either iSCSI qualified names (IQNs) or extended unique identifiers (EUIs).
I/O governing
You can set the maximum amount of I/O activity that a host sends to a volume. This amount is known as the I/O governing rate. The governing rate can be expressed in I/Os per second or MB per second.
I/O groups The pair of nodes within a single enclosure is known as an input/output (I/O) group. The pair of nodes within the control enclosure is known as an input/output (I/O) group.
Internal storage Internal storage is directly attached to the system. The system can manage a combination of internal and external storage and represents all the detected storage as MDisks.
Inventory information email An inventory information email summarizes the hardware components and configuration of a system. Service personnel can use this information to contact you when relevant softwareupdates are available or when an issue that can affect your configuration is discovered. It is a good practice to enable inventory reporting.
MDisks A managed disk (MDisk) is a logical unit of physical storage. MDisks are either arrays (RAID) from internal storage or volumes from external storage systems. MDisks are not visible to host systems.
Node canisters Each single processing unit is a node canister, which is also called a node. The two nodes within the canisters make an I/O group that is attached to the SAN fabric.
Object naming All objects in a system have names that are user-defined or system-generated.
Object overview
The Lenovo Storage V7000 solution is based on a group of virtualization concepts. Before setting up your Lenovo Storage V7000 environment, you must understand the concepts and the objects in the environment.
Performance statistics
Real-time performance statistics provide short-term status information for the Lenovo Storage V7000 system. The statistics are shown as graphs in the management GUI.
Power supply units Power® supply units (PSUs) are subcomponents of enclosures. A PSU takes electrical power and distributes the power to other components in the system.
SAN fabric overview The SAN fabric is an area of the network that contains routers and switches. A SAN is configured into a number of zones. A device that uses the SAN can communicate only with devices that are included in the same zones that it is in. A system requires several distinct types of zones: a system zone, host zones, and disk zones. The intersystem zone is optional.
SANs A storage area network (SAN) is a pool of storage systems that are interconnected to the servers in an enterprise. A SAN administrator is the person responsible for administering the various resources that make up the SAN.
Setting up an SSH client
Secure Shell (SSH) is a client-server network application. It is used as a communication vehicle between the host system and the Lenovo Storage V7000 command-line interface (CLI).
Standard and persistent reservations The SCSI Reserve command and the SCSI Persistent Reserve command are specified by the SCSI standards. Servers can use these commands to prevent ports in other servers from accessing particular LUNs.
Storage Management Initiative Specification
The Storage Management Initiative Specification (SMI-S) is a design specification of the Storage Management Initiative (SMI) that is launched by the Storage Networking Industry Association (SNIA).
Storage pools In general, a pool or storage pool is an allocated amount of capacity that jointly contains all of the data for a specified set of volumes. The system supports two types of pools: parent pools and child pools.
Switches The Lenovo Storage V7000 connects to host systems and storage devices on the storage area network (SAN) through switches. Switches from different vendors can be used together in the Lenovo Storage V7000 configuration.
Systems A volume storage system is a collection of control enclosures.
System layers An LenovoStorwize® family system is in one of two layers: the replication layer or the storage layer.
User roles
Each user of the management GUI must provide a user name and a password to sign on. Each user also has an associated role such as monitor, copy operator, service, administrator, or security administrator. These roles are defined at the clustered system level. For example, a user can be the administrator for one system, but the security administrator for another system.
Virtualization Virtualization is a concept that applies to many areas of the information technology industry. A type of virtualization, symmetric virtualization, is optional when Lenovo Storage V7000 is used as an external storage system.
Volumes A volume is a logical disk that the system presents to attached hosts.
Vital product data Vital product data (VPD) is information that uniquely records each hardware and licensed-internal-code element in the nodes.
Worldwide node and port names
A worldwide name is a unique name that is composed of 16 hexadecimal digits that are allocated to a node, service, or port on the SAN.