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12 Sun StorEdge 3900 and 6900 2.0 Series Troubleshooting Guide • March 2003
Sun Proprietary/Confidential: Internal Use Only
Currently, one 10-Gbyte VLUN is created from each physical LUN, for a total of two
VLUNs. The Sun StorEdge 6900 series has four possible physical paths to each Sun
StorEdge T3+ array volume (LUN).
Refer to
FIGURE 2-2, which illustrates primary data paths to the alternate master, and
FIGURE 2-3, which illustrates the primary data paths to the master Sun StorEdge T3+
array.
FIGURE 2-2 Primary Data Paths to the Alternate Master
Host with HBA-0 and HBA-1
LUN0 - 10G
Active-MPDrive 0
LUN1 - 10G
Active-MPDrive 1
Switch
Virtualization
Engine (2)
Virtualization
Engine (1)
Switch
LUN1 - 10G
Active-MPDrive 1
LUN0 - 10G
Active-MPDrive 0
LUN0 - 500G
Active-Master
LUN1 - 500G
Passive -
Alternate Master
LUN0 - 500G
Passive-Master
LUN1 - 500G
Active -
Alternate Master
Switch
Switch
Logical Multipath Drive
MPDrive 0
Logical Multipath Drive
MPDrive 1
T3ES
(Master) (0A - 1P)
(Alternate Master)
(1A - 0P)
SAN
Database
MPDrive
Carved LUNs
Masking
Storage I/O and
Virtualization Engine Communications Traffic