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Maximum Number of Disks In RAID 5

Is there a limit to how many drives you can have in one RAID-5? What is the maximum number of physical drives recommended in a RAID-5 set?
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Linux lsscsi: See List Of All SCSI / SATA Hard Disks and CD / DVD Drives

How do I see attached scsi devices for my IBM Linux server powered by Red Hat Enterprise Linux 5 or 6? How do I list all sata hard disk names under Debian or Ubuntu Linux?
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Linux Find FC ID (WWN) of a disk/LUN

How do I find the FC ID (WWN) of a disk/LUN on Linux server?
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