10TB LaCie 5big Thunderbolt2 U drive is not recognized by my iMac OSX 10.9.5.

I purchased a 10TB LaCie 5big Thunderbolt2 U drive. The drive is not being recognized by my iMac OSX 10.9.5. I have talked with Apple support and Lacie and the offer no solutions to this problem.
Warren from Apple support has elevated to their engineers ( Warren, thanks for your help so far )
The thunderbolt bus device tree shows that the device is connected, but the port is closed. Could you please help or advise?
Thank you
Thunderbolt Bus:
Vendor Name:  Apple Inc.
Device Name:  iMac
UID:  0x0001000A1657FB40
Firmware Version:  25.1
Domain UUID:  C2F156F3-5EDF-C753-8A9A-B3E97DB2C5BE
Port:
Status:  Device connected
Link Status:  0x2
Receptacle:  1
Port Micro Firmware Version:  2.1.3
Cable Firmware Version:  0.1.18
Cable Serial Number:  C4M224400KHDQ4KB2
2big:
Vendor Name:  LaCie
Device Name:  2big
Vendor ID:  0x3
Device ID:  0x2
Device Revision:  0x4
UID:  0x000300000F931710
Route String:  1
Firmware Version:  26.1
Port (Upstream):
Status:  Device connected
Link Status:  0x2
Port Micro Firmware Version:  0.2.5
Cable Firmware Version:  0.1.18
Cable Serial Number:  C4M224400KHDQ4KB2
Port:
Status:  Device connected
Link Status:  0x2
Port Micro Firmware Version:  0.2.5
Cable Firmware Version:  1.1.0
2big:
Vendor Name:  LaCie
Device Name:  2big
Vendor ID:  0x3
Device ID:  0x2
Device Revision:  0x4
UID:  0x000300000F56DC10
Route String:  301
Firmware Version:  26.1
Port (Upstream):
Status:  Device connected
Link Status:  0x2
Port Micro Firmware Version:  0.2.5
Cable Firmware Version:  1.1.0
Port:
Status:  Device connected
Link Status:  0x2
Port Micro Firmware Version:  0.2.5
Cable Firmware Version:  0.1.18
Cable Serial Number:  C4M247300ZLDQ4KBF
5big Thunderbolt 2:
Vendor Name:  LaCie
Device Name:  5big Thunderbolt 2
Vendor ID:  0x3
Device ID:  0xA
Device Revision:  0x3
UID:  0x0003000052124510
Route String:  10301
Firmware Version:  24.1
Port (Upstream):
Status:  Device connected
Link Status:  0x2
Current Link Width:  0x1
Cable Firmware Version:  0.1.18
Cable Serial Number:  C4M247300ZLDQ4KBF
Link Controller Firmware Version:  0.14.0
Port:
----->>Status:  No device connected<<-----
Link Status:  0x7
Current Link Width:  0x1
Link Controller Firmware Version:  0.14.0

No, the drive does not show anywhere:
Last login: Sun Jan 11 17:03:41 on console
***-iMac:~ AS$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Mac Drive               999.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                  Apple_HFS BACK-UP                 499.8 GB   disk1s2
***-iMac:~ AS$
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5big Thunderbolt 2:
Vendor Name:  LaCie
Device Name:  5big Thunderbolt 2
Vendor ID:  0x3
Device ID:  0xA
Device Revision:  0x3
UID:  0x0003000052124510
Route String:  10301
Firmware Version:  24.1
Port (Upstream):
------------------------------------>>>Status:  Device connected<<<------------------------------
Link Status:  0x2
Current Link Width:  0x1
Cable Firmware Version:  0.1.18
Cable Serial Number:  C4M247300ZLDQ4KBF
Link Controller Firmware Version:  0.14.0
Port:
----------------------------------->>Status:  No device connected<<-------------------------------
Link Status:  0x7
Current Link Width:  0x1
Link Controller Firmware Version:  0.14.0
iMac, OS X Mavericks (10.9.5)
The system reports a "port" being closed?
Thunderbolt

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