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compurescue
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T300 with CERC SATA 1.5/6ch - 2TB Drives

I have a PowerEdge 1800 with three RAID 1 (mirror) arrays on a CERC 1.5/6ch controller.  Each array is 2 x 1 TB disks.  I want to transfer the data to my 'new' PowerEdge T310 server.  I'd like to break the mirrors, transfer one of the disks to the T310, and copy the data over to the RAID 1 array in the T310. How can I do this?

Thanks to all that help out.

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Moderator
Moderator

Re: T300 with CERC SATA 1.5/6ch - 2TB Drives

Hello

Data migration is dependent on the source controller and destination controller. I didn't notice the destination controller mentioned.

I don't think any controller supported on the T300/T310 supports data migration from a CERC 1.5/6ch. The next controller in that line is the CERC6i. The CERC6i does not support migration from previous controllers in that line of controllers.

If the CERC 1.5/6ch supports breaking mirrors down to non-RAID disks(Not RAID 0s) and the destination controller supports non-RAID disks then it may work. Storage controllers write descriptors on disks to define virtual disk characteristics. Migration is supported when the destination controller is capable of understanding descriptors from the source controller and has the same or similar enough of a feature set to support the volume. Some non-RAID volumes are just pass-through disks without descriptors, some controllers still write descriptors on non-RAID disks.

I'm fairly certain there is not a supported method to do this. I recommend that you backup any important data before trying. Even if there is a supported method, you should backup.

http://www.dell.com/storagecontrollermanuals/

Thanks

Daniel Mysinger
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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compurescue
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Re: T300 with CERC SATA 1.5/6ch - 2TB Drives

There isn't a destination controller.  The T310 uses software RAID.

It would have been easier for me to answer this myself and not use an engineer's time if the CERC 1.5/6ch controller manual was available from Dell.  A search at the link provided doesn't return any documents.  These links from the Dell site are broken:

http://www.dellcommunity.com/supportforums/board/message?board.id=pes_hardrive&thread.id=25507 from page: https://www.dell.com/community/PowerEdge-HDD-SCSI-RAID/RAID-Techniques-Keeping-Your-Data-Safe/td-p/2...

This other link is also broken:

http://lt.dell.com/lt/lt.aspx?CID=19374&LID=462234&DGC=IR&DGSeg=DHS&DURL=http://support.dell.com/sup... came from: https://www.dell.com/community/PowerEdge-HDD-SCSI-RAID/Dell-CERC-SATA-Best-Practice-Reference-Guide/...

It appears that the manual is no longer available from Dell.

 

 

Regards, Computer Rescue Center

 

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Moderator
Moderator

Re: T300 with CERC SATA 1.5/6ch - 2TB Drives

If you are referring to the S-series controller, then no, you cannot migrate from a CERC SATA 1.5/6ch to any S-series controller.

If documentation is not available for a system then you can email to request documentation. The CERC6i page has a note under documentation with the email address.

https://www.dell.com/support/home/product-support/product/poweredge-cerc-6i/manuals

Daniel Mysinger
Dell EMC, Enterprise Engineer

Get support on Twitter @DellCaresPRO

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