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Do Meta/hyper devices created on dmx-3 "share spindles" with other devices
hello
I have been asked by the DW team if their symm devices created on the dmx-3 share spindles with non data ware house devices. My first inclination is to say no because I am relatively a dmx-3 newbie, however I want to be sure. I know that sharing spindles on the clariion is common if I create luns within the same raid group for different applications and I can check that easily on our CX4-480. Finding this information on the dmx-3 is a mystery to me. I display the disks by disk group, I execute a symdisk list to see the free space on each disk, however, I can't tell how many devices(luns), have data on each disk. If other servers have data defined on the disks used by the DW, then I might to do some shuffling. The devices are standard devices, no bcvs.
Sorry if the answer is obvious, I am just not finding the answers needed.
Thanks!
Admingirl
dynamox
2 Intern
2 Intern
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20.4K Posts
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July 20th, 2011 09:00
unless your DW application was provisioned from a dedicated disk group, their devices are on "shared" spindles. If you run "symdev show -sid 123 DEVNAME", at the bottom of the output you will see the physical drives where each hyper reside. For example here is a 8.6G device (not meta), it's raid-5 device (3+1 configuration)
now you could run "symdisk show -sid 123 2D:DB" and see all the symmetrix devices that reside on that physical drive. Repeat for the rest of the drives.
Quincy561
1.3K Posts
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July 20th, 2011 11:00
VMAX and DMX both allow mixing of RAID types on a physical disk, and also don't have a concept of a RAID group when creating a LUN like CX/VNX.
John
vijay861
51 Posts
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July 20th, 2011 11:00
Hi
Does VMAX also follows the same architecture?
yaribhas
134 Posts
1
July 21st, 2011 06:00
There are ways to find that out using ECC also.
It has been a while but i think if you go to relationship's view you can find that information.
admingirl
614 Posts
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July 21st, 2011 08:00
Thank you,
I can see the relationships now.
Admingirl