You are performing an initial AI Installation of Oracle Solaris 11. You have not identified a target disk for the root pool and your installation fails. What are the two possible disk based reasons for this failure?

During an Oracle Solaris 11 Automated Installer (AI) process where a target disk is not explicitly defined in the manifest, the installer attempts to automatically select a suitable disk. This selection process is governed by specific criteria. The installation will fail if no disk meets these requirements. Two primary disk-based reasons for this failure are an invalid disk label and insufficient size. The installer requires a disk with a recognizable label, such as SMI (VTOC), to be considered a valid target. Furthermore, the disk must have enough free space to accommodate the Oracle Solaris OS, as well as default ZFS volumes for swap and dump, which typically requires a minimum of approximately 13 GB.

A. The AI installer creates default swap and dump ZFS volumes if they are not explicitly defined in the manifest; their absence does not cause the installation to fail.
C. A mirrored root pool is an optional configuration for redundancy and is not a prerequisite for a standard installation. The default is a single-disk root pool.
E. The Solaris 11 installer handles the partitioning of the target disk for the ZFS root pool automatically; pre-partitioning and setting an active partition are not required.

1. Oracle Solaris 11.4 Documentation Library, Installing Oracle Solaris 11.4 Systems, Chapter 6, "Automated Installations That Boot From Media," Section: "How AI Determines the Installation Target."

This section states, "If no target is specified in the AI manifest, AI selects the first disk that has at least the minimum required space and that does not appear to contain any data." It further clarifies that a disk is considered to have data if it "has a disk label that AI does not recognize," which supports option B. The requirement for "minimum required space" directly supports option D.

2. Oracle Solaris 11.4 Documentation Library, Installing Oracle Solaris 11.4 Systems, Chapter 2, "Planning for an Oracle Solaris 11.4 Installation," Section: "System and Disk Space Planning."

This section details the disk space requirements. For example, the solaris-large-server package requires about 8.5 GB, plus space for swap and dump volumes, which are sized based on system memory. The total often exceeds 13 GB, making size a critical factor for automatic disk selection (supporting option D).

3. Oracle Solaris 11.4 Documentation Library, Installing Oracle Solaris 11.4 Systems, Appendix A, "AI Manifest File," Section: "AI Manifest XML File Structure."

This appendix describes the element for specifying swap and dump. It notes, "If you do not specify swap and dump resources, default swap and dump devices are created." This confirms that option A is incorrect.