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.
Table of contents:
LUN Storage Definitions
Definition: LUN (Logical unit number)
A logical unit number (LUN) is a unique identifier used to differentiate separate devices (each of which is a logical unit) as addressed by a SCSI, iSCSI or Fibre Channel (FC) protocol. Read the full definition here.
Definition: Virtual LUN or thin LUN
A virtual LUN is a representation of a storage area that is not tied to any physical storage allocation. Virtual LUNs are used in thin provisioning for SAN management. Read the full definition here.
LUN Storage News and Tips
LUN storage and its role in SAN management
Explore logical unit number (LUN) storage and its role in SAN management. Learn how to create a LUN, how to share a LUN, and find out about LUN masking, zoning and management tools.
Virtualisation and the LUN: Storage configuration for VMs
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.
Five LUN management basics
IT expert Brien Posey discusses five fundamental ideas storage professionals must understand when dealing with LUN management.
Three ways to configure iSCSI LUNs in a virtual environment
Dennis Martin offers three ways to configure iSCSI LUNs with VMware and Hyper-V – two using the hypervisor while the other bypasses the hypervisor.
LUN configuration best practices to boost virtual machine performance
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.
13 LUN management tips for VMware environments
Use these LUN management recommendations to ensure your VMware-based virtualisation exercise results in optimal storage utilisation and performance.
How many VMs should you put on a LUN?
LUN configuration can improve virtual machine performance. When deciding how many VMs to put on a LUN, the size of your infrastructure is an important consideration.