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Prolient ML370 G3 scsi problem

 
Paulo_28
Occasional Advisor

Prolient ML370 G3 scsi problem

I have a smartarray642 and the 6 drive cage connected to it.
does this server integrated scsi supports Raid1?

If I connecte 2 HD SCSI3 in Raid1 and 4SCSI320 HD in Raid5 in the cage connected to the Smartarray, will they work ok? what speed they will work? the raid5 at 320 and the raid1 at 160 or will they work only at 160?
is this ok to put diferent hd capacity conected in the same cage but in diferent Raid configuration?

Thanks

Paulo Meireles
3 REPLIES
JohnWRuffo
Honored Contributor

Re: Prolient ML370 G3 scsi problem

Paulo:

The configuration looks fine. Using the Array Configuration utiltity you should have no troubles configuring these arrays.

As long as you do not mix the drives within each array, then each will run at it's effective protocol. Your RAID 5 will run at Ultra320 so long as all the drives are Ultra320.

It is ok to put diferent size disks in the cage but you need to build your arrays with common disks if at all possible. For example, you can have 4 x 72.8GB drives to make your RAID 5 and another 2 x 32.4GB for a RAID 1.

If you mix the drive sizes, the lowest common drive size is that the array will configure at.

Hope this helps! -john
Enjoy!
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Paulo_28
Occasional Advisor

Re: Prolient ML370 G3 scsi problem

thanks but will the 4 scsi320 work at 320 and the 2 scsi3 work at 160 in the same cage?
when you mean 2 diferente array you are refering to the raid1 and raid5?

Thanks
JohnWRuffo
Honored Contributor

Re: Prolient ML370 G3 scsi problem

Paulo:

Q1. Are the Smart Array 641/642 U320 controllers backwards compatible to Ultra 2 and Ultra 3 SCSI?

A1. Ultra320 technology is backward compatible to Ultra3 and Ultra2. When mixing and matching different interface speeds, the Ultra320 products will operate at the lowest speed in the system. For example, when mixing U320 and U3 drives in an external array with a U3 controller, all drives will operate at the Ultra3 speed of the controller. To attain maximum transfer rates of up to 320 MB/s with U320 technology all components must be Ultra320 capable - the drives, the controller or SCSI adapter, and, if external to the server, the enclosure I/O modules as well.
Enjoy!
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Was the post useful? Click on the white KUDOS! Star.

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