raid level

 
ess
Super Advisor

raid level

HI

please can anyone  tell me what  raid levels raid 1(2D+2P),raid 1(4D+4D),raid 5(3D+1D),raid 5(7D+1P),raid 5(28d+4P),..

please explain me.

tanks.

3 REPLIES 3
Torsten.
Acclaimed Contributor

Re: raid level

These are RAID1 and RAID5 consisting of several numbers of disks (2d+2d = mirrors, 7+1 = raid 5, consists of 7 data and 1 parity disk and so on ...) - these terms are used related to XP and P9000 disk arrays.


Hope this helps!
Regards
Torsten.

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ess
Super Advisor

Re: raid level

Hi

tanks for help. if more explain and if posible send me document about this.

Johan Guldmyr
Honored Contributor

Re: raid level

As the XP / P9500 are based on Hitachi gear you might find more details if you search for HDS/Hitachi.

 

http://forums.hds.com/index.php?/topic/126-how-many-hdds-are-recommended-in-a-raid5-array/page__p__408

 

For example.

 

This blog (with broken .bmp pictures..) http://gestaltit.com/all/tech/storage/devang/hitachis-hds-raid-6/

 

has some more information.