Spectra Logic Spectra 12000 manual About TAOS, Taos Itp, NDMP Enabled by TAOS

Models: Spectra 12000

1 190
Download 190 pages 4.9 Kb
Page 66
Image 66

66 Spectra 12000 User Guide

About TAOS

The Spectra Logic TAOS operating system architecture is an innovative approach to sharing tape backup resources among hosts. The TAOS enabled Spectra 12000 E-QIP has an ethernet interface and the ability to enable one of two components: TAOS ITP or TAOS NDMP.

TAOS ITP

TAOS Internet Tape Protocol (ITP) is enabled on every TAOS enabled E- QIP shipped from the factory. TAOS ITP is used by installing ITP drivers on all hosts that require access to the library. Once the ITP drivers are installed and configured the host sees the E-QIP as a locally attached SCSI device. All applications that work with your existing SCSI devices will work seamlessly with all TAOS enabled devices.

When an application runs, SCSI commands are issued to the ITP driver— a virtual SCSI HBA. These SCSI commands are converted to IP packets by the ITP driver, sent across the network to the E-QIP, then re-assembled into SCSI commands before being sent to the drives.

NDMP Enabled by TAOS

TAOS Network Data Management Protocol (NDMP) is an optional feature that can be purchased and enabled with an activation key. TAOS NDMP includes an NDMP agent built directly into the E-QIP, so that Network- Attached Storage (NAS) devices that support NDMP can talk directly to the library across the network.

Typically, a backup application host will initiate a backup job and instruct the NAS file system and the library to get ready. They are then instructed to talk to each other to complete the backup. Metadata and management commands may involve the backup server, but the bulk of the data—the information being read/written to tape—passes directly from the NAS device to the tape drives, without detouring through the backup server.

The E-QIP supports versions 2 and 3 of NDMP.

Page 66
Image 66
Spectra Logic Spectra 12000 manual About TAOS, Taos Itp, NDMP Enabled by TAOS