z/VM Module 10: Storage Management Software. Objectives. Discuss the importance of using a storage management software package. Describe the storage environment today and explain why storage management products are needed. Describe a storage management product: IBM Tivoli Storage Manager
Installing a tape drive on each server,, an expensive option that does not provide high reliability
Manually monitoring or neglecting to monitor backup jobs, which might create incomplete backup tape sets
Delaying restores to obtain the latest backup, then waiting for the tapes to be scanned until the needed file is found
Backing up only changed data, which improves backup time, reduces network demand, and saves on storage resources
Automatically restarting restore operations in case of network failure during a restore operation
Implementing a storage management policy as needed, across heterogeneous platformsComparing Storage Management Techniques
AIX:– (Advanced Interactive eXecutive) IBM’s incarnation of Unix for the RT PC, RS/6000, PS/2, and mainframe; it is an enhanced version of Unix V
AS/400: – (Application System/400) IBM’s mid-range processor
DAS: – (Direct Access Storage) can only scale along with the server that it is attached to, unlike SAN
Instant Archive: – allows customers to create a virtual full backup from data already stored at the Tivoli Storage Manager server
LUNs: - logical unit numbers
NAS: – (Network-Attached Storage) typically, a disk drive subsystem attached via Ethernet to a network that uses an IP protocol to accept and process requests form multiple platforms.
NDMP: – (Network Data Management Protocol) can be used to back up file- system images to a Tivoli storage management server.
RAID: - (Redundant Array of Inexpensive Disks) consists of a series of systems to organize several disk drives into a single entity that behaves as a single virtual drive. The various disks work in parallel, thus improving the access performance and saving the information stored from accidental crashes.
Rapid Recovery: – is an integrated attribute of the instant archive media, but these piece of media also contain all inventory information necessary to perform a restore with the database.
SAN: - Storage Area Network. Typically, a disk drive subsystem attached via fiber to a network, accepting and processing requests from multiple platforms.