2010-10-22 08:55 AM
Hi NetApp Community, I am looking for documentation about the underlying technology of NetApp's devices. Meaning when a volume is created how is that placed on the disks and within an aggregate and RAID group. And then when a LUN is created, how is that treated within a volume. Is it spread across a limited number of disks or all of them? I am also looking for information on IOPS. I want to learn the engineering technology about how NetApp does things not just the way to set it up.
2010-10-22 09:04 AM
LUNs get spread across all disks in all RAID groups in an aggregate.
See the Storage Management Guide and Block Access Protocols Guide in the Data ONTAP
documentation for a good start...
At your service,
2010-10-25 12:28 AM
The most technical info you'll find is the paper "FlexVol: Flexible, Efficient File Volume Virtualization in WAFL" from Edwards et.al.that was published at USENIX 08.
Available for download here: http://www.usenix.org/event/usenix08/tech/full_papers/edwards/
still leaves open a lot of questions but answers many as well