What is WWN with respect to storage?
A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier used in storage technologies including Fibre Channel, Parallel ATA, Serial ATA, NVM Express, SCSI and Serial Attached SCSI (SAS).
What is Wwpn & Wwnn?
A WWPN is a World Wide Port Name; a unique identifier for each Fibre Channel port presented to a Storage Area Network (SAN). Each port on a Storage Device has a unique and persistent WWPN. A World Wide Node Name, WWNN, or WWnN, is a World Wide Name assigned to a node (an endpoint, a device) in a Fibre Channel fabric.
How are the World Wide names assigned?
A World Wide Name (WWN) is a unique identifier that is assigned to a manufacturer by the Institute of Electrical and Electronic Engineers (IEEE) and hard-coded into a Fibre Channel (FC) device.
What is world wide number?
A WWN is a number that is hard-coded into network storage devices, such as fiber channels and advanced technology attachments (ATA). To simplify, a WWN is like a MAC address but for network storage devices.
What is a drive WWN?
1 Answer. 1. 4. The WWN identifies the actual physical hardware disk; in simple cases it is derived from the hardware serial number.
How do you get Wwpn in AIX?
To locate the WWPN, complete the following steps:
- Log in as root.
- Enter lscfg -vl fcs x , where x is the adapter number. The network address is the Fibre Channel adapter port WWPN value. Notes: The lscfg -vl fcsx ROS level identifies the Fibre Channel adapter firmware level.
What is a World Wide Node Name?
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. A worldwide name that is allocated to a node is called a worldwide node name (WWNN) . Each node canister in a control enclosure is allocated a WWNN.
What is the unique identifier for FC HBA?
worldwide name
All FC devices have a unique identity that is called a worldwide name (WWN). This identification can be compared with Ethernet cards and MAC addresses.
How do I find my WWN virtual machine number?
Alternatively, run the following commands:
- Run ” cat /proc/scsi/qla2xxx/6 | grep -A3 ‘SCSI Device Information:’ ” to get WWNN and WWPNs: ~ # cat /proc/scsi/qla2xxx/6 | grep -A3 ‘SCSI Device Information:’
- Run ” cat /proc/scsi/qla2xxx/6 | grep ‘Host Device Name’ ” to get vmhba number:
Which is a part of the storage subsystem?
The storage subsystem, i.e., disk storage, which your application depends on, can be physical drives that are actually connected to the physical server or they are provided by a SAN (Storage Area Network) subsystem. If your server is a virtual server, then by definition SAN drives are being used.
How can I tell if my storage subsystem is working?
One way to determine whether you’re experiencing storage subsystem problems is to open Windows Explorer and right-click on each of the drives. If the properties look OK, then try to access a directory or file. If everything looks OK and the performance seems normal, then the storage subsystem is likely functioning correctly.
What does the storage subsystem do for medical images?
If the drives are SAN and they aren’t available, then you need to contact the team that supports SAN storage. The storage subsystem provides high-capacity storage for medical images and supports two levels of image storage: (1) short-term storage for data caching; and (2) long-term storage for permanent archiving.
Why is the mass storage subsystem so important?
The mass storage subsystem is something that is quite important. You need to be able to easily import and export data from a system. If you consider that each GPU has a maximum of 5 GB/s input bandwidth and 5 GB/s output bandwidth, you will have a problem supplying such a large amount of data from a mass storage device.