I have plugged the disk array to an MacBook Air with 10.12.5. Same behaviour.
I have these strange messages in logs when I plug the disks :
SandboxViolation: AssetCache(497) deny file-read-metadata /Volumes
Violation: deny file-read-metadata /Volumes
Process: AssetCache [497]
Path: /usr/libexec/AssetCache/AssetCache
Load Address: 0x10ff8d000
Identifier: AssetCache
Version: ??? (???)
Code Type: x86_64 (Native)
Parent Process: launchd [1]
Responsible: /usr/libexec/AssetCache/AssetCache [497]
User ID: 235
Date/Time: 2017-05-20 09:14:40.902 GMT+2
OS Version: Mac OS X 10.12.5 (16F73)
Report Version: 8
Thread 0 (id: 5082):
Thread 1 (id: 205077):
Thread 2 (id: 211921):
Thread 3 (id: 211926):
Thread 4 (id: 211927):
Binary Images:
MetaData: {"build":"Mac OS X 10.12.5 (16F73)","action":"deny","target":["Volumes"],"hardware":"Mac","platform_binary ":"no","profile":"unknown","process":"AssetCache","op":"file-read-metadata"}
And :
SandboxViolation: IDECacheDeleteAp(6960) deny mach-lookup com.apple.coresymbolicationd
Violation: deny mach-lookup com.apple.coresymbolicationd
Process: IDECacheDeleteAp [6960]
Path: /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex/Conte nts/MacOS/IDECacheDeleteAppExtension
Load Address: 0x10af47000
Identifier: com.apple.dt.IDECacheDeleteAppExtension
Version: 1 (1.0)
Code Type: x86_64 (Native)
Parent Process: launchd [1]
Responsible: /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex/Conte nts/MacOS/IDECacheDeleteAppExtension [6960]
User ID: 501
Date/Time: 2017-05-20 09:14:40.991 GMT+2
OS Version: Mac OS X 10.12.5 (16F73)
Report Version: 8
Thread 0 (id: 211964):
Thread 1 (id: 212006):
Thread 2 (id: 212007):
Thread 3 (id: 212008):
Thread 4 (id: 212010):
Binary Images:
MetaData: {"build":"Mac OS X 10.12.5 (16F73)","action":"deny","target":["com.apple.coresymbolicationd"],"hardware":" Mac","platform_binary":"yes","profile":"unknown","process":"IDECacheDeleteAp","o p":"mach-lookup"}