disk error in path to SPB

hello there , I need help 

There are some problems with my storage, I don’t know what causes these problems,
I want to know whether the hard disk is broken, or the fiber link problem, or other problems, the following is the log file

_________________________________________________________________________________________

Check Version: 7.1.79.8
Check Command: /nas/bin/nas_checkup

nas_version:7.1
nas_release:79-8 slot:slot_0 platform:NS subplatform:NS-ARGONAUT

-------------------------------------Checks-------------------------------------
2019-12-15T03:51:09+08:00 cs::check_statistics_groups_database: (Pass)
2019-12-15T03:51:10+08:00 cs::check_if_file_system_usage_is_under_limit_: (Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NAS_Storage_API_is_installed_correctly_: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NAS_Storage_APIs_match_: (N/A)
2019-12-15T03:51:11+08:00 cs::check_if_NBS_clients_are_started: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NBS_configuration_exists: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NBS_devices_are_accessible: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NBS_service_is_started: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_PXE_service_is_stopped: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_standby_is_up: (N/A)
2019-12-15T03:51:11+08:00 cs::check_integrity_of_NASDB: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_primary_is_active: (Pass)
2019-12-15T03:51:11+08:00 cs::check_all_callhome_files_delivered_: (Pass)
2019-12-15T03:51:11+08:00 cs::check_resolv_conf: (Pass)
2019-12-15T03:51:11+08:00 cs::check_if_NAS_partitions_are_mounted: (Pass)
2019-12-15T03:51:11+08:00 cs::check_ipmi_connection: (Pass)
2019-12-15T03:51:12+08:00 cs::check_nas_site_eventlog_configuration_: (Pass)
2019-12-15T03:51:12+08:00 cs::check_nas_sys_mcd_configuration: (Pass)
2019-12-15T03:51:12+08:00 cs::check_nas_sys_eventlog_configuration_: (Pass)
2019-12-15T03:51:12+08:00 cs::check_logical_volume_status: (Pass)
2019-12-15T03:51:12+08:00 cs::check_valid_nasdb_backup_files: (Pass)
2019-12-15T03:51:12+08:00 cs::check_root_disk_reserved_region_: (Pass)
2019-12-15T03:51:13+08:00 cs::check_if_RDF_configuration_is_valid: (N/A)
2019-12-15T03:51:13+08:00 cs::check_if_fstab_contains_duplicate_entries: (Pass)
2019-12-15T03:51:13+08:00 cs::check_if_sufficient_swap_memory_available: (Pass)
2019-12-15T03:51:13+08:00 cs::check_for_IP_and_subnet_configuration: (Pass)
2019-12-15T03:51:13+08:00 cs::check_auto_transfer_status: (Warn)
2019-12-15T03:51:25+08:00 cs::check_for_invalid_entries_in_etc_hosts: (Pass)
2019-12-15T03:51:26+08:00 cs::check_for_correct_filesystem_mount_options: (Pass)
2019-12-15T03:51:26+08:00 cs::check_the_hard_drive_in_the_control_station: (Pass)
2019-12-15T03:51:26+08:00 cs::check_if_Symapi_data_is_present: (Pass)
2019-12-15T03:51:43+08:00 cs::check_if_Symapi_is_synced_with_Storage_System: (Pass)
2019-12-15T03:51:43+08:00 dm::check_boot_files: (Pass Pass)
2019-12-15T03:51:43+08:00 dm::check_if_primary_is_active: (Pass Pass)
2019-12-15T03:51:43+08:00 dm::check_if_root_filesystem_is_too_large: (Pass N/A)
2019-12-15T03:51:43+08:00 dm::check_if_root_filesystem_has_enough_free_space: (Pass N/A)
2019-12-15T03:51:43+08:00 dm::check_Server_IfConfig: (Pass Pass Pass Pass Pass Pass Pass Pass N/A)
2019-12-15T03:51:43+08:00 dm::check_network_connectivity: (Pass Pass Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_status: (Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_dart_release_compatibility: (Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_dart_version_compatibility: (Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_server_name: (Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_unique_id: (Pass Pass)
2019-12-15T03:51:51+08:00 dm::check_CIFS_file_server_configuration: (Warn N/A)
2019-12-15T03:51:52+08:00 dm::check_domain_controller_connectivity_and_configuration: (Pass N/A)
2019-12-15T03:52:05+08:00 dm::check_DNS_connectivity_and_configuration: (Warn N/A)
2019-12-15T03:52:05+08:00 dm::check_connectivity_to_WINS_servers: (Pass N/A)
2019-12-15T03:52:05+08:00 dm::check_I18N_mode_and_unicode_translation_tables: (Pass N/A)
2019-12-15T03:52:05+08:00 dm::check_connectivity_to_NTP_servers: (Warn N/A)
2019-12-15T03:52:07+08:00 dm::check_connectivity_to_NIS_servers: (Pass N/A)
2019-12-15T03:52:07+08:00 dm::check_virus_checker_server_configuration: (Pass N/A)
2019-12-15T03:52:07+08:00 dm::check_if_workpart_is_OK: (Pass)
2019-12-15T03:52:07+08:00 dm::check_if_free_full_dump_is_available: (Pass)
2019-12-15T03:52:08+08:00 dm::check_if_each_primary_Blade_has_standby: (Pass)
2019-12-15T03:52:08+08:00 dm::check_if_Blade_parameters_use_EMC_default_values: (Info)
2019-12-15T03:52:09+08:00 dm::check_VDM_root_filesystem_space_usage: (N/A)
2019-12-15T03:52:09+08:00 dm::check_if_file_system_usage_is_under_limit: (Pass N/A)
2019-12-15T03:52:09+08:00 dm::check_slic_signature: (Pass)
2019-12-15T03:52:09+08:00 be::check_disk_emulation_type: (Pass)
2019-12-15T03:52:09+08:00 be::check_disk_high_availability_access: (Pass Fail Fail Fail Fail Fail Fail Fail Fail Fail Fail Pass Pass)
2019-12-15T03:52:09+08:00 be::check_disks_read_cache_enabled: (Pass)
2019-12-15T03:52:13+08:00 be::check_disks_and_storage_processors_write_cache_enabled: (Pass)
2019-12-15T03:52:13+08:00 be::check_if_FLARE_is_committed: (Pass)
2019-12-15T03:52:21+08:00 be::check_if_FLARE_is_supported_: (Pass)
2019-12-15T03:52:29+08:00 be::check_array_model: (Pass)
2019-12-15T03:52:38+08:00 be::check_if_microcode_is_supported: (N/A)
2019-12-15T03:52:38+08:00 be::check_no_disks_or_storage_processors_are_failed_over: (Pass)
2019-12-15T03:52:38+08:00 be::check_that_no_disks_or_storage_processors_are_faulted: (Pass)
2019-12-15T03:52:38+08:00 be::check_that_no_hot_spares_are_in_use: (Pass)
2019-12-15T03:52:40+08:00 be::check_that_no_hot_spares_are_rebuilding: (Pass)
2019-12-15T03:52:41+08:00 be::check_minimum_control_lun_size_: (Pass)
2019-12-15T03:52:42+08:00 be::check_maximum_control_lun_size_: (N/A)
2019-12-15T03:52:42+08:00 be::check_maximum_lun_address_limit: (Pass)
2019-12-15T03:53:01+08:00 be::check_system_lun_configuration: (?)
2019-12-15T03:53:02+08:00 be::check_if_storage_processors_are_read_cache_enabled: (Pass)
2019-12-15T03:53:04+08:00 be::check_if_auto_assign_are_disabled_for_all_luns: (N/A)
2019-12-15T03:53:04+08:00 be::check_if_auto_trespass_are_disabled_for_all_luns: (N/A)
2019-12-15T03:53:04+08:00 be::check_storage_processor_connectivity: (Pass Pass)
2019-12-15T03:53:10+08:00 be::check_control_lun_ownership: (N/A)
2019-12-15T03:53:10+08:00 be::check_if_Fibre_Channel_zone_checker_is_set_up: (N/A)
2019-12-15T03:53:10+08:00 be::check_if_Fibre_Channel_zoning_is_OK: (N/A)
2019-12-15T03:53:10+08:00 be::check_if_proxy_arp_is_setup: (Pass)
2019-12-15T03:53:16+08:00 be::check_if_Product_Serial_Number_is_Correct: (Pass)
2019-12-15T03:53:20+08:00 be::check_SPA_SPB_communication: (Pass)
2019-12-15T03:53:31+08:00 be::check_if_secure_communications_is_enabled: (Pass)
2019-12-15T03:53:31+08:00 be::check_if_backend_has_mixed_disk_types: (Pass)
2019-12-15T03:53:31+08:00 be::check_for_file_and_block_enabler: (Pass)
2019-12-15T03:53:34+08:00 be::check_if_nas_storage_command_generates_discrepancies: (Pass)
2019-12-15T03:53:34+08:00 be::check_if_Repset_and_CG_configuration_are_consistent: (Pass)
2019-12-15T03:53:34+08:00 be::check_block_operating_environment: (Pass)
2019-12-15T03:53:36+08:00 be::check_thin_pool_usage: (N/A)
2019-12-15T03:53:36+08:00 be::check_for_domain_and_federations_health_on_VNX_: (Pass)
--------------------------------------------------------------------------------

One or more errors have occurred. Follow the instructions provided to correct
the problem and try again.

WARNING!! THE ACTIONS MARKED WITH AN ASTERISK (*) ARE FOR EMC SUPPORT PERSONNEL
ONLY 1. These actions are dangerous and irreversible to your system. 2. They
must ONLY be used by qualified EMC support personnel.

-----------------------------------Information----------------------------------
Blades : Check if Blade parameters use EMC default values
Information HC_DM_27390050398: The following parameters do not use the
EMC default values:
* Mover_name Facility_name Parameter_name Current_value Default_value
* server_2 cifs sendMessage 0x00000003 0x00000001
* server_2 ip reflect 0x00000000 0x00000001
* server_2 quota policy 'filesize' 'blocks'
* This check is for your information only. It is OK to use parameter
values other than the EMC default values.
* EMC provides guidelines for setting parameter values in the "Celerra
Network Server Parameters Guide" (P/N 300-002-691) that can be found
on http://powerlink.emc.com/
* If you need to change the parameter back to the default, run the
following command: "/nas/bin/server_param -facility
-modify -value "
* To display the current value and default value of a parameter, run
the following command: "/nas/bin/server_param -facility
-info "

--------------------------------------------------------------------------------

------------------------------------Warnings------------------------------------
Control Station: Check auto transfer status
Warning HC_CS_18800050420: Cannot establish connection to FTP server
sftphost sftp.emc.com
Action : Command "/nas/tools/automaticcollection -verifyftp" failed to
connect to FTP connection. Check the configuration in
/nas/site/automaticcollection.cfg file. For more information, search
the Knowledgebase on Powerlink as follows:
1. Log in to http://powerlink.emc.com and go to Support >
Knowledgebase Search> Support Solutions Search.
2. Use ID emc221733 to search.

Blades : Check CIFS file server configuration
Warning HC_DM_18800115743:
* server_2: The CIFS server 'a6862m002.autoexpr.com' has not been
registered in the DNS. Its status is: Update of "A" record failed.
If the computer name is not registered in the DNS database, the
CIFS clients will not be able to access this computer name across
the network.
Action : Check the dynamic update set-up policy on the DNS domain and
then manually add the computer name in DNS.

Blades : Check DNS connectivity and configuration
Warning HC_DM_18800115743:
* server_2: The DNS domain 'autoexpr.com' is defined with only one DNS
server. High availability is compromised.
Action : Add another DNS server using the 'server_dns' command. The
recommendation is to configure DNS with DNS servers accessible from
different subnets.

Blades : Check connectivity to NTP servers
Warning HC_DM_18800115743:
* server_2: Only one NTP server is configured. It is recommended to
define at least two different NTP servers for a high availability.
If the clock of the Data Mover is not correct, potential errors
during Kerberos authentication may happen (timeskew).
Action : Use the server_date command to define another NTP server on
the Data Mover. Read the man pages for details and examples.

--------------------------------------------------------------------------------

-------------------------------------Errors-------------------------------------
Storage System : Check disk high availability access
Error HC_BE_14505017351:
* FCN00120201013 root_disk server_2 error in path to SPB
* FCN00120201013 root_ldisk server_2 error in path to SPB
* FCN00120201013 d3 server_2 error in path to SPB
* FCN00120201013 d4 server_2 error in path to SPB
* FCN00120201013 d5 server_2 error in path to SPB
* FCN00120201013 d6 server_2 error in path to SPB
* FCN00120201013 d13 server_2 error in path to SPB
* FCN00120201013 d14 server_2 error in path to SPB
* FCN00120201013 d15 server_2 error in path to SPB
* FCN00120201013 d16 server_2 error in path to SPB
*Action : Name: System_Error Key: 1002 Level: undefined

Error HC_SYS_14505213953: Command failed
* Command: /nas/bin/server_devconfig server_2 -probe -scsi 16 -all
* Command output: server_2 :

Error 1015: server_2 : no drives on chain
* Command exit code: 7
*Action : Name: System_Error Key: 1002 Level: undefined

--------------------------------------------------------------------------------

Check Result: Error