If you've missed any of the Storage Smarts questions in our daily e-mails, here's another chance to test your memory. We've compiled questions 31 to 40 below. Good luck!
This is a method of offloading backup procedures from a server so that the time ordinarily devoted to backup functions can be used to carry out other server tasks.
This is a system for archiving data such as business records and reports to one or more optical disks in a compressed but easily retrievable format.
This is a magnetic tape and drive system used for computer data storage and archiving. It can hold 40 gigabytes (GB) of data when compression is used, and can transfer data at speeds of up to 3 megabytes per second (Mbps) without compression and 6 Mbps with compression.
This is a way of recording information onto magnetic tape. It was used to record TV programs in the 1960s, and has been used in high-end tape-backup products. It's also the same technology used in digital audio tapes.
This data replication technique ensures data integrity because updates to directories and bitmaps are constantly written to a serial log on disk before the original disk log is updated. In the event of a system failure, the data on the disk can be restored to its pre-crash configuration.
SearchStorage.com expert W. Curtis Preston identifies six main steps to identifying any good disaster recovery plan. Which of the following is not one of them?
a. define unacceptable loss
b. watch your server speed
c. organize everything
d. document what you have
e. test test test
Backup and recovery expert W. Curtis Preston says there are five golden rules for backup. Which of the following is not one of these rules?
a. Back it up or give it up.
b. If it has not been backed up, it cannot be recovered.
c. If it has not been backed up off-site, it will not survive a fire.
d. If it has not been tested with a recovery, it is not a backup.
e. Tape rules -- it's the only way to go for backup.
Disk mirroring provides data protection in the case of disk failure because data is constantly updated to both disks, where each relies upon a common controller. However, there is an inherent problem in disk mirroring. What is it?
a. Drive reliability is eliminating the need for mirroring
b. Access to data is threatened if the controller fails
c. Data can't be mirrored remotely
d. Mirroring can't handle planned outages
e. Data sets can't be kept in synch
This is one method of ensuring data availability in which every write written to the primary side is written "in-order" to the remote side before the application sees an "I/O complete" message.
Which of the following is a disaster recovery don't?
a. Always back up data catalogs and directories
b. Run similarly designed backup and storage environments
c. Synchronize desktop and laptop data to the server
d. Place backup facilities near each other
e. Have monitoring, job execution and security features prepared
This was first published in February 2003