What components EMC ECC are consists of ?

[Hanry Zhou]

I have been asked the same question a couple of times. Can anybody please help me out?

Also, what is the definition of tier1 and tier2 storage?

Lastly, if I have two HBA's, and condidering redundancy, I understand these two hba's should be connected to two different switches, but should these two switches located in two different fabric?

Thanks for your help!

[Hasan Atasoy]

hi hanry ;

each hba should go different switches. and each swich should have a connection from emc. so if one of your switches down your operation will survive.

Hasan.

[Orrin]

Hi Hanry,

ECC - EMC Control Center.

It's EMC's offering for monitoring and allocating storage. It's like the SMC for the EVA only a lot more.

It does performance monitoring, SAN fibre zoning, disk/meta/lun allocation. etc.

It has different components that fit together to provide this functionality. The server that has ECC loaded has a database repository and the agents so that it can get information from the frames and the hosts. There's a lot more to EEC than can be explained in short.

Tier1 and Teir2 storage. There are a lot of definitions to teir1 and tier2 storage. Essentially the only way to manage this is to look at it from a cost perspective. The more expensive storage is tier1 and the cheaper one is tier2. Tier1 ( EMC DMX symmetrix, HP XP series), Tier2 ( EMC Clariion, HP EVA5000 etc). Obviously because the tier1 storage is more expensive, you expect it to perform better have less downtime and more redundancy... and that's just the start.

If you have two HBA's, there are two scenarios, are you more concerned about redundancy or performace. IN case of redundancy, you have to connect them to two switches on teo different fabrics and the storage frame should have the same two switch connection.

If you are connecting for performance, you could connect both HBA's and trunk ( do link aggregation )

Hope this helped.

Orrin

[Greg Mundy]

You can also look at Tier 1 and Tier 2 storage from the perspective of type of Disk. A Fibre Channel SCSI disk is faster w/ a higher Mean Time Between Failure than an ATA disk and could be considered "Tier 1". Your FATA (in HP World) or SATA (in EMC World) would then be considered "Tier 2" storage. This is the definition that those of us who do not have/cannot afford DMX/XP's have to use.