This post is more than 5 years old
2 Intern
•
614 Posts
0
850
February 9th, 2011 12:00
creating 2gb device from 8GB hyper
Hello,
I looked in the cli guide and I need to validate if my create-dev file is correct.
I want to create a 2gb drive from an 8.632GB hyper, raid-10.
The geometry is standard, 1 cylinder = 15 tracks, .937 MB for each cylinder. So I am thinking I need 1 devices, 2200 cylinders.
Does this sound about right?
I have only created larger meta devices before and not a smaller device. No training, I am still a DMX newbie so any insight would be helpful.
Admingirl
No Events found!
Booyah2
2 Intern
•
185 Posts
0
February 9th, 2011 13:00
Ok, should work out perfect... I have a cylinder to gigabyte calculator... But you have to have a DMX 3 or later storage device for this calculation.
If your storage array is earlier than DMX 3 then you will need a 4400 cylinder device due geometry changes within the arrays technologies.
Good Luck!
Thom
admingirl
2 Intern
•
614 Posts
0
February 9th, 2011 13:00
Thank you so much!! I am going to try it now.
dynamox
9 Legend
•
20.4K Posts
1
February 9th, 2011 13:00
1 cylinder = 960K (on DMX3 +)
so if you convert 2GB to KB =~ 2097152 KB
now 2097152 KB / 960 KB = 2184 cylinders
Booyah2
2 Intern
•
185 Posts
1
February 9th, 2011 13:00
Ooops, finge check.
That would be 2.0142G device for 2200 cylinders
admingirl
2 Intern
•
614 Posts
0
February 9th, 2011 13:00
Thank you, thank worked!
Booyah2
2 Intern
•
185 Posts
0
February 9th, 2011 13:00
Yes, for a DMX3 FBA device of 2200 cylinders = 2.1042G
Booyah2
2 Intern
•
185 Posts
0
February 9th, 2011 14:00
Just out of curiosity... Which calculation came out the closest??
My calculator (provided by EMC)
or Dynamox's formula??
I'm not a math wizard... I have to use a calculator... Heehee
admingirl
2 Intern
•
614 Posts
0
February 9th, 2011 14:00
Thank you Dynamox!