Originally posted by: The_Doctor
srangama, in part wrote ->
In the server there is a Storage Backplane -- 3 SFF Drives/SATA DVD/ HH Tape (EJ0E), and it has three 300GB 15K RPM SAS SFF disk drives. Unbeknown to you, you answered your own question. Buried within your response is feature code
EJ0E.
Feature code EJ0E supports RAID 0, 1, 10. No RAID 5 or RAID 6. So in theory, you could set your environment like you asked in your 1st post:
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RAID 1 using drives 0, & 1 ..... with drive 2 as a hot spare.
To do this:
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obtain the latest standalone AIX Diagnostic CD. Download it if you have to.
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boot this CD
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run SAS Disk Array Manager
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set the array the way you want it, destroying whatever is pre-installed on those drives
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power down
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then start your server build
I've never worked with feature code EJ0E so I caution you:
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the above is theory based on my understanding of how it works
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except for educational purposes, the above procedure using only 3 drives, IMHO is a total waste of time. aka... a total PITA
dukessd steered you correctly. The smarter approach is something like:
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use these 3 drives as JBOD
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install VIO Server on drive 0
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use s/w mirroring to mirror to drive 1
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then use drive 2 for whatever you want. Using drive 2 as an alt_disk_copy volume might be a consideration. (you'll have to adjust /image.data to use drive 2 as an alt_disk_copy volume but well worth the effort)
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or better yet, just put everything on a SAN & be done with it.
Bottom line, do whatever works for you.
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