LUN storage configuration has long been a cornerstone of storage management. The LUN – a chunk of storage created from RAID partitions on a SAN – presents a logical volume of capacity to an individual server.
That’s still relevant today in the era of virtualisation. Many users retain physical servers that need a one-to-one connection between host and LUN. But, the role of the LUN is also changing with the rise of server and desktop virtualisation. It now forms a container for the logical objects used by VMware, Microsoft Hyper-V etc.
In this guide you will find all you need to know about LUNs, LUN configuration and management, including their use in virtualised environments.
1All about LUN-
LUN Storage News and Tips
Virtualisation and the LUN: Storage admins used to match LUNs to physical servers, but that’s all changed. Find out how in this guide to the basics of VM storage Continue Reading
Dennis Martin offers three ways to configure iSCSI LUNs with VMware and Hyper-V -- two using the hypervisor while the other bypasses the hypervisor. Continue Reading
LUN configuration plays a key role in tweaking VM performance. With the right hardware, disk type and RAID level, VM storage helps run more VMs per host. Continue Reading
Storage Videos of Interest
Storage expert Howard Marks discusses how block storage works in a VMware SAN environment, highlighting benefits and limitations to consider.
Howard Marks discusses how the use of vSphere's Storage I/O Control can combat storage resource contention problems in VMware.
Storage expert Howard Marks describes different types of SAN multipathing and what to look out for when implementing it in certain environments.
With tiered storage architecture, health care organizations can keep critical data on the faster systems and older data on slower ones. This expert webcast explains how.
3What is LUN?-
LUN Storage Definitions
A logical unit number (LUN) is a unique identifier for designating an individual or collection of physical or virtual storage devices that execute input/output (I/O) commands with a host computer, as defined by the Small System Computer Interface (SCSI) standard. Continue Reading
A virtual LUN (virtual logical unit number) is a representation of a storage area that is not tied to any physical storage allocation. Virtual LUNs are used in thin provisioning (also known as virtual provisioning) for storage area network (SAN) management. A virtual LUN is also sometimes called a thin LUN. Continue Reading