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75723
May 24th, 2013 08:00
Dynamic Disk Pools
Been doing a lot of reading about dynamic disk pools lately.....
http://www.netapp.com/us/system/pdf-reader.aspx?m=ds-3309.pdf&cc=us
https://eventbooking.stfc.ac.uk/uploads/mew23/gava.pdf
http://www.enterprisestorageforum.com/storage-management/making-raid-work-into-the-future-1.html
https://iq.quantum.com/exLink.asp?11054880OB98P19I42661089
Sounds like things are moving that way. Only downsides are no support for SSDs or enclosure loss protection.
I have a MD3220 and would like to start implementing DDPs in my storage array. Has anyone had good experience with these? One of my main gripes now with traditional RAID is build times when expanding storage by either adding disks to a group or expanding a virtual disk. I know th at SSDs are not supported, but can someone tell me for sure if Enclosure Loss Protection is in fact NOT supported with DDPs? That might be a hangup for me.
Thanks for the help!!!
Also, what is the best way to calculate usable storage on a DDP? Anyone know of a calculator out there?
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lumeanatti
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July 25th, 2013 07:00
Looking for the same thing. I did get a response from Dell support one time. They gave me an answer using an "internal tool". I need to ask again.
Dev Mgr
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July 25th, 2013 09:00
Enclosure loss protection is only possible with raid 10 where each mirror has 1 drive on one enclosure and the other drive on a different enclosure.
Dynamic disk pool is somewhat leveraging the raid 6 idea, so enclosure protection will never be an option.