[ale] hdparm and RAID cards

[Jim Kinney]

How the $(^*#!!! do I use hdparm to enable write caching on a giant
pile of drives that make up a hardware RAID 6 array?

I can peek through the controller with smartctl for health monitoring.
The RAID controller (MegaRAID) has a tool to see that each drive has a
N/A status for hardware cache (these drives all have a large multi-MB
cache).

I _really_ don't want to have to convert all 28 drives to RAID0 so I
can get a /dev/sdx node for hdparm.
-- 
James P. Kinney III

Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain

http://heretothereideas.blogspot.com/
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