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Number of spindles involved

Please experts:

i am reading about: Planning Storage and I/O Requirements
i do not understand Considerations for storage: Number of spindles involved (often more important than disk size)
0
enrique_aeo
Asked:
enrique_aeo
2 Solutions
 
ste5anSenior DeveloperCommented:
"spindle" means disk..
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Steve WalesSenior Database AdministratorCommented:
Well, more specifically, spindle would be the physical disk - if your physical disk layout consists of 4 disks (completely ignoring RAID groups) you have 4 spindles.

If you were to take those 4 disks and make a single RAID group (any type of RAID for this example, it does not matter) for the system to use, you are presented with 1 logical disk to the system but there's still 4 physical spindles underneath.
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