Are 4kN Advanced Format (4 KiB logical sector) disks supported in Red Hat Enterprise Linux?

Issue

• Does RHEL support both 4kb (4096 byte) and 512 byte sector sizes or only one of them? Is so, what versions of the OS?
• Are SCSI 4 KiB sector disks supported in Red Hat Enterprise Linux?
• Are ATA 4 KiB sector disks supported in Red Hat Enterprise Linux?
• Are ATA 4 KiB sector issues addressed in Red Hat Enterprise Linux?
• Are 512e disks (using 4096 byte sector sizes internally while speaking 512 byte sector sizes to extern) supported?
• Are Advanced Format 512e or 4kN (4k native) disks supported in RHEL?
• What are the supported block sizes for RHEL6?
• What are the supported block sizes for RHEL5?