Glossary

L

logical unit (LUN) A logical unit is one or more disks or parts of disks bound into a single entity, accessible by logical unit number (LUN). Logical unit is a SCSI term. This manual generally uses the term LUN. The RAID types are: RAID 5 (independent access array), RAID 3 (parallel access array), RAID 1 (mirrored pair), RAID 0 (nonredundant array), RAID 1/0 (mirrored RAID 0), disk (individual disk), or hot spare. The operating system sees the LUN, which might include more than one disk, as one contiguous span of disk space.

LUN See logical unit (LUN).

 

M

memory module

See SP memory modules.

mirroring

Maintenance of a second (and optionally, via software, a third) copy

 

of a logical volume image that provides continuous access if an image

 

becomes inaccessible. The system and user applications continue

 

running on the good image without interruption. There are two kinds

 

of mirroring: hardware mirroring, in which the storage system

 

maintains synchronization of the disk images, and software

 

mirroring, in which the operating system maintains synchronization.

 

Mirroring is further explained in the Fibre Channel configuration

 

planning guide.

Manager

A program with a graphical user interface that lets you bind disks

 

into LUNs on a non-RAID group storage system, create RAID groups

 

and bind LUNs on them on a RAID group storage system, unbind

 

LUNs, destroy RAID groups, set storage-system properties, and

 

ascertain storage-system status. Navisphere Manager lets you do that

 

for multiple storage systems on multiple servers running Navisphere

 

Agent. For more information on Navisphere Manager, refer to the

 

Navisphere Manager manual.

 

N

Navisphere

See Initialization Utility.

Initialization Utility

 

Navisphere Server

See Server Utility.

Utility

 

g-4

EMC CLARiiON Server Support Products for Windows Installation Guide

Page 96
Image 96
EMC CLARiiON manual Memory module, Mirroring, Manager, Initialization Utility Navisphere Server

CLARiiON specifications

EMC CLARiiON is a storied name in the realm of data storage solutions, renowned for its reliability, scalability, and advanced features. As a part of EMC's pioneering approach to enterprise storage, CLARiiON systems are designed to meet the demands of businesses ranging from small enterprises to large data centers.

One of the standout features of EMC CLARiiON is its support for both Fibre Channel and iSCSI protocols, which allows for versatile deployment options in various network environments. This dual-protocol capability is key in enabling organizations to leverage existing network infrastructures while providing the flexibility to scale as needed.

The architecture of CLARiiON is built on a modular design, featuring a series of storage processors, also known as storage controllers. This design not only enhances performance but also allows for easy upgrades and expansions. The use of RAID (Redundant Array of Independent Disks) technology ensures data redundancy and integrity, offering a variety of RAID levels to cater to specific performance and data protection needs.

EMC CLARiiON also integrates advanced data management features such as online capacity expansion, which enables administrators to add drives without disrupting operations. This is complemented by the system's support for thin provisioning, which allows for more efficient use of storage space, presenting only the amount of storage that is actually being used.

One notable technology employed by CLARiiON is the Storage Resource Management (SRM) suite, which provides powerful tools for monitoring, reporting, and managing storage usage and performance. This suite enables IT teams to optimize their storage investments by identifying trends and potential issues before they affect service levels.

Another critical aspect is the inclusion of automatic load balancing features, which help distribute workloads evenly across available storage resources. This promotes optimal performance and reduces the risk of bottlenecks during peak usage times. Additionally, the snapshot technology embedded in CLARiiON offers users the ability to create point-in-time copies of data, facilitating rapid recovery in the event of data loss or corruption.

Lastly, EMC CLARiiON systems are designed with high availability in mind. They often feature redundant components and advanced failover capabilities to ensure seamless operations. With these characteristics, EMC CLARiiON stands as a robust solution for organizations seeking to enhance their data storage strategy, driven by cutting-edge technology and tailored to meet diverse business requirements.