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So - was my thinking correct - a LUN is similar to volume presented from a SAN to a server?
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So - was my thinking correct - a LUN is similar to volume presented from a SAN to a server?

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thats exactly how I know it...i've dealt with many LUNS in a server environmet and thats exactly how I preceive them.
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thats exactly how I know it...i've dealt with many LUNS in a server environmet and thats exactly how I preceive them.

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So yes, your thinking is correct
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Hi All,<br />
<br />
I was hoping a storage expert could provide me with a definition of a LUN, in terms of SAN?<br />
<br />
From what I understand - say you have a a SAN, a LUN is 'virtual partition' of the SAN that you present to one of the servers that accesses the SAN. It is, in effect, a collection of hard disks on the SAN that are spliced together to form a single unit of storage?<br />
<br />
Is this correct?
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Hi All,

I was hoping a storage expert could provide me with a definition of a LUN, in terms of SAN?

From what I understand - say you have a a SAN, a LUN is 'virtual partition' of the SAN that you present to one of the servers that accesses the SAN. It is, in effect, a collection of hard disks on the SAN that are spliced together to form a single unit of storage?

Is this correct?

Definition of a LUN?

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

Storage devices include any device used for storing and retrieving digital information. Hard disk drives (HDDs) use one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored or retrieved in any order and not only sequentially. The primary competing technology for secondary storage is flash memory in the form of solid-state drives (SSDs), but HDDs remain the dominant medium for secondary storage due to advantages in price per bit and per-device recording capacity. CD-RW (Compact Disc-ReWritable) is a digital optical disc storage format that allows information to be stored outside the mechanical HDD.

Storage Hardware

Servers are computing devices that are similar to desktop computers in that they have the same basic components, but are significantly different in size, configuration and purpose. Servers are usually accessed over a network, and many run unattended, without a computer monitor, input device, audio hardware or USB interfaces. Many servers do not have a graphical user interface (GUI), and are configured and managed remotely. Servers typically include hardware redundancy such as dual power supplies, RAID disk systems, and ECC memory, along with extensive pre-boot memory testing and verification. Critical components might be hot swappable, and to guard against overheating, servers might have more powerful fans or use water cooling.