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RAID 10 (1+ 0)

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Last Modified: 2016-12-08
Hi people - I have a poweredge 2650 with a perc 3 /Di controller - there are 4 36GB drives - I am running out of space and need to add drives. I would like to break one of the raid 1 arrays leaving me with 1 36GB raid 1 array and 3 open drive bays. Then I would install 3 larger drives and configure as raid 5 and move my data to that partition (exchange data store). What do you all think? I suppose I could reload the server and restore from backup but I'm really trying not to do that!
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Commented:
Sounds like a usable configuration. I've got a few 2650s and have them set up exactly as you describe. 2 x 36GB RAID1 and 3 x 73GB RAID5. I have SQL and Exchange data stores, IIS, domain controllers + various other apps running across these systems (data being stored mostly on RAID5 disks) - performance and stability is just fine. Make sure your BIOS, Perc and SCSI firmware and drivers are up-to-date as these are oldish servers for which there have been several updates since they were released. The Dell website contains all of the necessary files for you to bring the system up to date.

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Commented:
Thanks fro the reply gusweb, Have you by any chance broken 1 of the raid1 arrays in a raid 10 config before?

I'll make sure all the firmware is up to date today.
saggar maker's framemaker
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Commented:
If you break a RAID 10 array (assuming the Dell software allows the array to be split) you end up with 2 RAID 0 arrays - no redundancy.

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Commented:
Andyalder, Gusweb - Thats the big question, Dell won't say it will work because they think when it bombs I'll blame them - I'm looking for someone who has done this - it seems reasonable to me. Another option would be to use partition magic and grow the new partition once I've switched out all of the drives - as far as windows is concerned its one drive - do either of you have any experience using dell array manager in this manner? Thanks

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Commented:
Andyalder, Thanks for pointing out the raid 0 and not raid 1!

Commented:
I don't have experience of doing that. I'd build the drives (and OS) restoring from good backups.

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Commented:
Thanks for the info people - This lets me know that my methods of the past are probably not viable now, at least not with dell servers. Thanks
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