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
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1.
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What is a full dump?
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A file system or set of file systems that is fully copied to a backup medium
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An uncompressed tape archive
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A compressed tape archive
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A selective backup strategy based on only recently modified files being backed up
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2.
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What is an incremental dump?
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A file system or set of file systems that is copied to a backup medium
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An uncompressed tape archive
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A compressed tape archive
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A selective backup strategy based on only recently modified files being backed up
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3.
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What media can be used for a backup?
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Hard disk, Zip drive, DAT tape, or CD-RW
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Zip drive, DAT tape, CD-RW only
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DAT tape or QIC tape only
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Hard disk, Zip drive, DAT tape, or EPROM
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4.
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What is a RAID level 0?
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Mirroring
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Striping
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Mirroring + striping
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Blocking
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5.
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What is a RAID level 1?
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Mirroring
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Striping
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Mirroring + striping
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Blocking
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6.
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What command would be used to extract a tar file called backup.tar using verbose output?
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tar zvf backup.tar
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tar xvf backup.tar
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tar evf backup.tar
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tar zevf backup.tar
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7.
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What does cpio 'copy in' mode do?
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Inserts files into an archive, with data sourced from a stream created by cat or a similar utility
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Inserts files into an archive by extracting them directly from the file system (using the -f option).
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Acts like cp for slice
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Extracts files from standard input, from a stream created by cat or a similar utility
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8.
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What does dd do?
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Inserts files into an archive, with data sourced from a stream created by cat or a similar utility
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Inserts files into an archive by extracting them directly from the file system (using the -f option).
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Acts like tar for disk slice
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Extracts files from standard input, from a stream created by cat or a similar utility
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Answers
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1. |
A. A full dump makes a copy of everything on a specified file system. |
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2. |
D. An incremental dump saves time by only backing up modified files. |
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3. |
A. Anything that stores data can be used for backups. |
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4. |
B. Striping logically extends the space available on disk volumes. |
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5. |
A. Mirroring ensures data integrity by copying blocks concurrently to multiple disks. |
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6. |
B. xvf means e(x)tract, (v)erbose, (f)ile. |
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7. |
D. 'copy in' literally means what it says. |
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8. |
C. dd can be used to copy slices as if they were files. |