Installing and Using the Admhost and Admsnap Utility

Function

Description

Syntax and Examples

 

 

 

 

 

 

admhost lun_flush

The admhost lun_flush command flushes all write

admhost lun_flush [-h]-o object_name

 

cache data, for the specified device (object_name) to

[-t object_type devicedriveletter]

 

disk.

where

 

 

-hdisplays a help message

 

 

-oobject_name specifies the name or drive

 

 

letter of the device you want to flush.

 

 

-tobject_type is an optional switch that

 

 

specifies the object type (device or

 

 

driveletter) of the device you want to flush.

 

 

If you specify the device name, admhost

 

 

identifies the corresponding device and

 

 

drive letter.

 

 

 

admhost lun_list

The admhost lun_list command lists the drive letters

admhost lun_list [-h][-l lun_wwn]

 

and WWNs for all server devices.

[-dobject_name] [-aoutput_style]

 

 

where

 

 

-hdisplays a help message.

 

 

-llun_wwn specifies the WWN of the device

 

 

you want to list.

 

 

-dobject_name specifies the drive letter or

 

 

name of the device you want to list.

 

 

-aoutput_style specifies an alternative

 

 

output style for the list output. The default

 

 

style lists the drive letter and WWN for the

 

 

logical unit. The -aswitch lets you specify

 

 

physicaldrive as the output style.

 

 

 

admhost help

This admhost help command displays the syntax for

admhost help

 

each admhost command and the revision number of the

 

 

Admhost Utility.

 

 

Output for admhost help command is shown below.

 

 

Revision number: V1.1.0.0.0 - 0

 

 

Valid operations include:

 

 

lun_flush, lun_activate,

 

 

lun_deactivate, lun_list, and

 

 

help.

 

 

Valid types include: device and

 

 

driveletter.

 

 

 

 

Using the Admhost Utility

4-5

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EMC CLARiiON manual Admhost lunlist
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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.
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