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October 26th, 2010 13:00
CREATING A 2.5t META
HI,
I am dmx newbie. I have three years of Clariion Experience however, at my new company I need to do some work on the dmx. I need to present 2.5TB of space from the dmx to our sql team. What is the best way to do that? I know I can only have 255 devices/meta and my device size for raid 5 is approximately 8GB.
Thanks in advance!
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dynamox
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October 26th, 2010 13:00
symdisk list -sid 1234 -by_diskgroup
this command will list disk groups configured on your array, you will see "free capacity column" , that is raw space available on each device, you can run the command below to give you total raw capacity (in this example disk group 0 ..output in gigabytes)
expr `symdisk list -sid 1234 -disk_group 0 |awk '{a += $9};END{print a}'` / 1024
a lot of times there are so many gaps on physical disks that just because it may say that disk groups has so many gigabytes free, when you actually try to create devices it may say "not enough space" so you have to try first.
I am assuming you wanted to present as big volumes as you could create and then create dynamic partition to combine those into one ? Bad idea ..MS Clustering does not support dynamic drives. Do you know why they need 2.5TB drive ..is that just for the database files ?
admingirl
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October 26th, 2010 13:00
That's correct. I talked to the MS admin and he says they enable a special drive to handle the larger size(GPS)? I believe it's for the sql data. All I need to do is present the space, and they take it from there so I am not sure if they are using dynamic partitioning or not.
Thank you so much!
dynamox
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October 26th, 2010 13:00
GPT (handles file system larger than 2 TB)
so if they really really want a file system that big, look into your disk groups and see if you have space available to create larger size devices and then create a meta out of them.
admingirl
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October 26th, 2010 13:00
I don't think so, I am not sure how to check. I am filling in for the dmx primary and unfortunately have not been to any training. I am also doing this command line using symcli. If I don't do one meta, maybe I can do one, two, or three as long as I present the correct amount of space I think. This is part of a sql cluster and another machine needs to access it as well.
dynamox
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October 26th, 2010 13:00
Do you have free space to create bigger devices ?
admingirl
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614 Posts
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October 26th, 2010 13:00
Great! Thank you so much. I will run the command you gave me and see what I can do for them.
Thanks again!