Use All drives for backup jobs

Hi,

I would like to ask assistance on how to make our nbu 6.5 drives run backup jobs (solaris 10). We have 5 drives. But i observed only 3 were running backup jobs. Im also confused why the last two drives has two paths. What's the purpose? My colleague told me it's for backup and the other path is for restore jobs (not sure with his answer). I wan't all drives run backup jobs. Max concurrent job of Master server is 5. Apology for the ignorance..Thanks

root@**backupsp01 # ./vmoprcmd

                           HOST STATUS
Host Name                                  Version   Host Status
=========================================  =======   ===========
   **backupsp01                             650000    ACTIVE

                                PENDING REQUESTS

                                    <NONE>

                                  DRIVE STATUS

Drive Name               Label   Ready  RecMID  ExtMID  Wr.Enbl.  Type
    Host                       DrivePath                            Status
=============================================================================
HP.ULTRIUM3-SCSI.000     Yes     Yes    P30139  P30139  Yes       hcart3
      **backupsp01             /dev/rmt/2cbn                        ACTIVE

HP.ULTRIUM3-SCSI.001     Yes     Yes    P30030  P30030  Yes       hcart3
      **backupsp01             /dev/rmt/4cbn                        ACTIVE

HP.ULTRIUM3-SCSI.004     Yes     Yes    P30721  P30721  Yes       hcart3
      **backupsp01             /dev/rmt/0cbn                        ACTIVE

nfs02P-drive                 No      No                     No        hcart3
       **backupsp01             rst1l (nfs02P)                         TLD
       **backupsp01             nrst1a (nfs02P)                      TLD

nfs02p-dr                   No      No                     No        hcart3
       **backupsp01             rst0l (nfs02P)                         TLD
       **backupsp01             nrst0a (nfs02P)                      TLD

=============================================================================

I can't see nfs02P-drive & nfs02p-dr in sgscan. Not sure if its connected connected why its not running backup job.

sgscan:

root@***backupsp01 # 
#
#WARNING: detected StorEdge Network Foundation connected devices not in
#         SG configuration file:
#
#    Device World Wide Port Name 500a0983871973d6
#
#    See /usr/openv/volmgr/NetBackup_DeviceConfig_Guide.txt chapter
#    "Special configuration for "Sun StorEdge Network Foundation" HBA/Driver"
#    for information on how to use sg.build and sg.install to
#    configure these devices
#

/dev/sg/c0t0l0: Disk (/dev/rdsk/c0t0d0): "LSILOGICLogical Volume"
/dev/sg/c0tw500104f0008d8799l0: Changer: "STK     SL500"
/dev/sg/c0tw500104f0008d87a3l0: Tape (/dev/rmt/2): "HP      Ultrium 3-SCSI" 
/dev/sg/c0tw500104f0008d87a6l0: Tape (/dev/rmt/4): "HP      Ultrium 3-SCSI" 
/dev/sg/c0tw500104f0008d87acl0: Tape (/dev/rmt/0): "HP      Ultrium 3-SCSI" 

========================================================================