Solaris Volume Manager (SVM) How to Setup/Configure OBP NVRAM Parameter for SPARC System/Server when Root Disk is Mirrored with SVM
(Doc ID 1504573.1)
Last updated on OCTOBER 09, 2019
Sun Solaris Volume Manager (SVM) - Version 11.9.0 to 11.10.0 [Release 11.0] Solstice DiskSuite Software - Version 4.2 to 4.2.1 [Release 4.0] Oracle Solaris on SPARC (32-bit) Oracle Solaris on SPARC (64-bit)
Configure the Open Boot Prom (OBP) environment for SPARC systems properly if system is mirrored with Solaris Volume Manager (SVM).
The terms "primary" and "secondary" are often applied to SVM boot disks. In practice neither disk is primary. The data is written to both simultaneously and read from both, usually in round robin fashion. The term primary can be accurately used to refer to the disk which was the original first submirror, so that the secondary disk acquired its content by SVM mirroring. The other context in which one disk can be said to be primary is in discussing which disk was specified when booting the system, as initially a single disk is always responsible for starting the boot process.
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