![background image](http://html2.mh-extra.com/html/quantum/snc-4500/snc-4500_user-manual_4004287035.webp)
SNC 450x User’s Guide
29
Mapping
The
Mapping
page of the SNC Manager interface shows you the current mapping. When you hover the
mouse over a particular device, the following information about the device is displayed:
•
Bus number
•
Target ID
•
LUN number
•
Device Type
•
Vendor ID
•
Product Name
•
Firmware Revision Number
•
Serial Number
Device mapping is the process of defining what storage devices, tape drives, and changers hosts can
access through the SNC. Hosts determine available storage using a device map stored on the SNC. The
device map routes all commands from the SNC iSCSI address to the appropriate SCSI device. This
mapping needs to be defined when the SNC is first set up. See
Figure 10
.
Figure 10
Physical and Virtual Connection Possibilities With the SNC
The device map is persistent across reboots, so storage will always be presented at the same LUN ID until
the map is adjusted. If a storage device is off-line when device discovery occurs, its LUN ID will be reserved
so that when it comes back online, it will retain the same ID. When adding new storage devices, the device
map needs to be redefined.
SCSI devices are mapped using the designations for the SCSI bus, target and LUN.
CAUTION
If you change the SCSI IDs of tapes or the library attached to the SNC
after setting up the SNC the first time, you must map the devices
again using the SNC Manager Mapping page.
Summary of Contents for SNC 4500
Page 1: ...www adic com ADVANCED DIGITAL INFORMATION CORPORATION SNC 450xUser sGuide...
Page 6: ...vi Contents...
Page 20: ...14 Getting Started Figure 4 Scalar 100 with Four LTO 1 or SDLT Drives...
Page 23: ...SNC 450x User s Guide 17 Figure 6 Scalar 100 with Four LTO 2 Drives...
Page 30: ...24 Getting Started...
Page 46: ...40 Using the SNC Manager Interface...
Page 112: ...106 Removal and Replacement Procedures...
Page 116: ...110 iSCSI Performance Tuning...
Page 119: ...SNC 450x User s Guide 113 BSMI Notice...
Page 120: ...114 Regulatory Notices...