The document discusses different RAID levels, with RAID level 5 using block-level striping with distributed parity for OLTP applications, while RAID level 1 provides data mirroring and is used for data warehousing and some OLTP configurations. It also covers information available for NAS and SAN configurations from various sources like the NAS operating system, fabric switches, HBAs, storage systems, operating systems, and applications. The document concludes with a brief overview of data recovery using double write strategies and a backup program that can directly move data between disk and tape storage.

1. STORAGE AVAILABILITY

2. RAID LEVEL 5
 This level of RAID provides data striping on each
device within storage array
 It comprises block level data striping with
distributed parity
 This configuration is used for OLTP applications.

3. RAID LEVEL 1
• This level of RAID provides data mirroring.
• This requires more storage capacity.
• RAID 1 is used for applications such as data
warehousing and some OLTP configurations

4. Some of the guidelines for both NAS and SAN
 NAS RTOS: Essentially everything that is active within
NAS device is available through the NAS operating
system.
 NAS Configuration: External sources of information can
be identified and accessed.
 Fabric Operating System Information: Available within
switch MIBs

5.  HBA Information: Available within the attached
node server
 Storage Information: MIBs or activity log files
 OS Information: Dependent on the OS. Common
Information Management Database
 Application Information: Dependent on the
application

6. DATA RECOVERY
• Double write strategy and staging process

7. • The backup program can move data directly from disk to
tape storage for archival and directly from tape to disk for
restore

8. THANK YOU