3 Openscape 500i failing within 2 months of each other

[kibalabala]

Team,
I am running a HIpath version 7 system with dual Eco Server processors and 3 remote shelves
the system has been in operation since 2016 and worked well until 2 months ago when things just deteriorated
first one openscape started rebooting itself, then completely failed and could not be logged on
a few weeks later the second shelf also started behaving the same and the third also followed
when i checked logs, the logs folder was full and the system restarted after deleting some logs
the system worked well for a few days but the problem has started again
can anyone kind enough please assist, below are some of the alarms i am getting in hista

F5749 E8 N2547 NO ACT BPB BOARD LW REQUEST 21-04-06 07:22:50
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:00H ONLY SIGNALING
SG on OpenScape Access 5

F5749 E8 N2546 NO ACT BPB BOARD LW REQUEST 21-04-06 07:22:50
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:00H ONLY SIGNALING
License ends in 27 days

F5749 E8 N2545 NO ACT BPB BOARD LW REQUEST 21-04-06 07:22:50
ALARM CLASS:CENTRAL:032
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:07H LICENSE OK
SOFTGATE VALID LICENSE

F5749 E8 N2544 NO ACT BPB BOARD LW REQUEST 21-04-06 07:22:50
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:00H ONLY SIGNALING
SG is in grace period!

F5471 E8 N2543 IN SERV BPB CIRCUIT L1 PORT ACTIVE 21-04-06 07:22:48
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:07H LAYER 1 ACTIVE
SUBBOARD NUMBER: 00
PHYS PORT NUMBER: 00

F5870 E8 N2542 NO ACT BPB BOARD LW EXCEPTION 21-04-06 07:22:48
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:21H LOADWARE TRACE DATA WITH ASCII TEXT
Ethernet: 100 Mbps Fdx.
642186FFFEF3F2F1F086860000000000 00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

F5870 E8 N2541 NO ACT BPB BOARD LW EXCEPTION 21-04-06 07:22:48
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:006: 00 : 0 -- -- BST:-- PLS:----
FORMAT:43
REASON:21H LOADWARE TRACE DATA WITH ASCII TEXT
Eth-Link: Auto-Sense
642186FFFEF3F2F1F086860000000000 00FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

F4391 M8 N2540 NO ACT BPB REC END SBR CC 21-04-06 07:22:13
ALARM CLASS:CENTRAL:024
FORMAT:0

F5570 E8 N2539 NO ACT BPB CLOCK SBR CLOCK 21-04-06 07:22:11
ALARM CLASS:CENTRAL:019
** :LTGx :LTUy :001: 00 : 0 Q2196-X DIU-N2/2 BST:01 PLS:-07
FORMAT:22
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF 05FB0600010000000000010000010002
00000600010001FF08030000140202FF FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFF

F5540 M4 N2538 NO ACT BPB NCUCG CG STATE 21-04-06 07:22:07
ALARM CLASS:CENTRAL:019
** : : 0 Q2329-X SoftGate BST:01 PLS:-09
FORMAT:43
FRONT_REF : NO_REF
IP_REF : NO_REF
PTP_MASTER: FALSE
PTP_MASTER_STRATUM : 255

F5306 E8 N2537 IN SERV BPB LTUC IN (ATTENDANCE LIST) 21-04-06 07:22:07
ALARM CLASS:CENTRAL:002
** :LTGx :LTUy:z: 00 : 0 Q2329-X SoftGate BST:01 PLS:-09
FORMAT:22
6440650ADB1A01120140091215014009 2D303920202020200500000000000000
00000000000000000000000000000000 00000000000000000000000000000000
00000000000000000000000000000000 00000000000000000000000000000000
0000000000

F5689 E8 N2536 OUT SERV BPB TERM EARTH BEGIN 21-04-06 07:22:00
ALARM CLASS:SWU-PER:003
** :: 11 : 0 Q2246-X SLMA24 BST:01 PLS:-10
FORMAT:43
DEVICE NAME: ANATE
EXTENSION NUMBER: 244xxx
i would be grateful if someone could offer some insight
thank you