Summary

In this chapter, you learned the basic concepts behind backup and restore, which are two crucial elements of a high availability and data protection strategy. Solaris provides a number of tools, such as ufsdump and ufsrestore, to implement these tasks. Alternatively, a third-party package may be used to increase functionality.

Questions

1.	What is a full dump? A file system or set of file systems that is fully copied to a backup medium An uncompressed tape archive A compressed tape archive A selective backup strategy based on only recently modified files being backed up
2.	What is an incremental dump? A file system or set of file systems that is copied to a backup medium An uncompressed tape archive A compressed tape archive A selective backup strategy based on only recently modified files being backed up
3.	What media can be used for a backup? Hard disk, Zip drive, DAT tape, or CD-RW Zip drive, DAT tape, CD-RW only DAT tape or QIC tape only Hard disk, Zip drive, DAT tape, or EPROM
4.	What is a RAID level 0? Mirroring Striping Mirroring + striping Blocking
5.	What is a RAID level 1? Mirroring Striping Mirroring + striping Blocking
6.	What command would be used to extract a tar file called backup.tar using verbose output? tar zvf backup.tar tar xvf backup.tar tar evf backup.tar tar zevf backup.tar
7.	What does cpio 'copy in' mode do? Inserts files into an archive, with data sourced from a stream created by cat or a similar utility Inserts files into an archive by extracting them directly from the file system (using the -f option). Acts like cp for slice Extracts files from standard input, from a stream created by cat or a similar utility
8.	What does dd do? Inserts files into an archive, with data sourced from a stream created by cat or a similar utility Inserts files into an archive by extracting them directly from the file system (using the -f option). Acts like tar for disk slice Extracts files from standard input, from a stream created by cat or a similar utility

Answers

1.	A. A full dump makes a copy of everything on a specified file system.
2.	D. An incremental dump saves time by only backing up modified files.
3.	A. Anything that stores data can be used for backups.
4.	B. Striping logically extends the space available on disk volumes.
5.	A. Mirroring ensures data integrity by copying blocks concurrently to multiple disks.
6.	B. xvf means e(x)tract, (v)erbose, (f)ile.
7.	D. 'copy in' literally means what it says.
8.	C. dd can be used to copy slices as if they were files.