BSOD on Server 2012 running dfs namespace and dfs replication roles with deduplication

Hello,
I have recently setup 2 dfsn & dfsr servers, both 2012 one physical the other virtual.
The idea is to have one server as primary and the other as a failover \ DR.
The primary server is virtual and connects via mpio \ iscsi to a dell san, using the provided dell DSM Drivers.
The secondary server is physical with local disk for storage.
I copy files to a namespace setup to always prefer the primary server, these files are then replicated across to the secondary.
I have also turned on deduplication on both servers to get the most out of the available storage.
This has been working well for 6 months or so, there have however been 2-3 occasions where the primary virtual server has crashed and blue screened causing the DFSR database to undergo a full consistency check.
The bug check errors i have managed to extract from the Memory.dmp and mini dump are as follows:
*                        Bugcheck Analysis                                   
REFERENCE_BY_POINTER (18)
Arguments:
Arg1: 0000000000000000, Object type of the object whose reference count is being lowered
Arg2: fffffa80379a3070, Object whose reference count is being lowered
Arg3: 0000000000000002, Reserved
Arg4: ffffffffffffffff, Reserved
    The reference count of an object is illegal for the current state of the object.
    Each time a driver uses a pointer to an object the driver calls a kernel routine
    to increment the reference count of the object. When the driver is done with the
    pointer the driver calls another kernel routine to decrement the reference count.
    Drivers must match calls to the increment and decrement routines. This bugcheck
    can occur because an object's reference count goes to zero while there are still
    open handles to the object, in which case the fourth parameter indicates the number
    of opened handles. It may also occur when the object?s reference count drops below zero
    whether or not there are open handles to the object, and in that case the fourth parameter
    contains the actual value of the pointer references count.
Debugging Details:
DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT
BUGCHECK_STR:  0x18
PROCESS_NAME:  dfsrs.exe
CURRENT_IRQL:  0
ANALYSIS_VERSION: 6.3.9600.17029 (debuggers(dbg).140219-1702) amd64fre
LAST_CONTROL_TRANSFER:  from fffff800999ee0d7 to fffff8009985a440
STACK_TEXT:  
fffff880`0bf3fb48 fffff800`999ee0d7 : 00000000`00000018 00000000`00000000 fffffa80`379a3070 00000000`00000002 : nt!KeBugCheckEx
fffff880`0bf3fb50 fffff800`99c33529 : fffffa80`379a3070 fffff8a0`0244adc0 00000000`000017e4 0000001b`930b60d8 : nt! ?? ::FNODOBFM::`string'+0x38605
fffff880`0bf3fb90 fffff800`99859453 : fffffa80`4063db00 fffffa80`4063db00 fffff880`0bf3fcc0 00000000`00000001 : nt!NtClose+0x239
fffff880`0bf3fc40 000007ff`5e8d2cda : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
0000001b`9069f398 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x000007ff`5e8d2cda
STACK_COMMAND:  kb
FOLLOWUP_IP:
nt! ?? ::FNODOBFM::`string'+38605
fffff800`999ee0d7 cc              int     3
SYMBOL_STACK_INDEX:  1
SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+38605
FOLLOWUP_NAME:  MachineOwner
MODULE_NAME: nt
IMAGE_NAME:  ntkrnlmp.exe
DEBUG_FLR_IMAGE_TIMESTAMP:  51a966cd
IMAGE_VERSION:  6.2.9200.16628
BUCKET_ID_FUNC_OFFSET:  38605
FAILURE_BUCKET_ID:  0x18_OVER_DEREFERENCE_nt!_??_::FNODOBFM::_string_
BUCKET_ID:  0x18_OVER_DEREFERENCE_nt!_??_::FNODOBFM::_string_
ANALYSIS_SOURCE:  KM
FAILURE_ID_HASH_STRING:  km:0x18_over_dereference_nt!_??_::fnodobfm::_string_
FAILURE_ID_HASH:  {eaf19261-0688-f327-a17d-6f7960ac4ebd}
Followup: MachineOwner
rax=0000000000000000 rbx=ffffffffffffffff rcx=0000000000000018
rdx=0000000000000000 rsi=fffffa80379a3070 rdi=00000000fffc000c
rip=fffff8009985a440 rsp=fffff8800bf3fb48 rbp=fffffa80379a3040
 r8=fffffa80379a3070  r9=0000000000000002 r10=fffffa8030d89190
r11=fffffa804063db00 r12=00000000000017e4 r13=0000000000000000
r14=fffff8a00a548f90 r15=0000000000000000
iopl=0         nv up ei pl zr na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00000246
nt!KeBugCheckEx:
fffff800`9985a440 48894c2408      mov     qword ptr [rsp+8],rcx ss:0018:fffff880`0bf3fb50=0000000000000018
Child-SP          RetAddr           : Args to Child                                                          
: Call Site
fffff880`0bf3fb48 fffff800`999ee0d7 : 00000000`00000018 00000000`00000000 fffffa80`379a3070 00000000`00000002 : nt!KeBugCheckEx
fffff880`0bf3fb50 fffff800`99c33529 : fffffa80`379a3070 fffff8a0`0244adc0 00000000`000017e4 0000001b`930b60d8 : nt! ?? ::FNODOBFM::`string'+0x38605
fffff880`0bf3fb90 fffff800`99859453 : fffffa80`4063db00 fffffa80`4063db00 fffff880`0bf3fcc0 00000000`00000001 : nt!NtClose+0x239
fffff880`0bf3fc40 000007ff`5e8d2cda : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13 (TrapFrame @ fffff880`0bf3fc40)
0000001b`9069f398 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x000007ff`5e8d2cda
start             end                 module name
fffff800`987b1000 fffff800`987ba000   kd       kd.dll       Thu Jul 26 03:30:34 2012 (5010ABCA)
fffff800`99800000 fffff800`99f4c000   nt       ntkrnlmp.exe Sat Jun 01 04:13:17 2013 (51A966CD)
fffff800`99f4c000 fffff800`99fb8000   hal      hal.dll      Wed Oct 24 04:03:21 2012 (50875A79)
fffff880`00a00000 fffff880`00a34000   ataport  ataport.SYS  Thu Jul 26 03:29:04 2012 (5010AB70)
fffff880`00a34000 fffff880`00a51000   lsi_sas  lsi_sas.sys  Fri May 11 20:40:21 2012 (4FAD6B25)
fffff880`00a51000 fffff880`00a5e000   serenum  serenum.sys  Thu Jul 26 03:30:13 2012 (5010ABB5)
fffff880`00a5e000 fffff880`00a6c000   fdc      fdc.sys      Thu Jul 26 03:30:15 2012 (5010ABB7)
fffff880`00a7b000 fffff880`00adb000   volmgrx  volmgrx.sys  Thu Jul 26 03:29:59 2012 (5010ABA7)
fffff880`00adb000 fffff880`00ae4000   intelide intelide.sys Thu Jul 26 03:29:52 2012 (5010ABA0)
fffff880`00ae4000 fffff880`00af3000   PCIIDEX  PCIIDEX.SYS  Thu Jul 26 03:29:09 2012 (5010AB75)
fffff880`00af3000 fffff880`00b56000   md3dsm   md3dsm.sys   Wed Aug 22 22:14:46 2012 (50354BC6)
fffff880`00b56000 fffff880`00b87000   msdsm    msdsm.sys    Sat Oct 05 04:32:09 2013 (524F8839)
fffff880`00b87000 fffff880`00ba0000   vmci     vmci.sys     Tue May 01 02:14:27 2012 (4F9F38F3)
fffff880`00ba0000 fffff880`00bb5000   vsock    vsock.sys    Fri Aug 30 20:25:34 2013 (5220F1AE)
fffff880`00bb5000 fffff880`00bcf000   mountmgr mountmgr.sys Thu Jul 26 03:29:33 2012 (5010AB8D)
fffff880`00bcf000 fffff880`00bd9000   atapi    atapi.sys    Thu Jul 26 03:30:33 2012 (5010ABC9)
fffff880`00bd9000 fffff880`00bf0000   vmxnet3n61x64 vmxnet3n61x64.sys Fri Sep 27 10:40:11 2013 (5245527B)
fffff880`00bf0000 fffff880`00bfa000   pnpmem   pnpmem.sys   Thu Jul 26 03:30:11 2012 (5010ABB3)
fffff880`00c40000 fffff880`00c9f000   mcupdate_GenuineIntel mcupdate_GenuineIntel.dll Thu Jul 26 03:30:12 2012 (5010ABB4)
fffff880`00c9f000 fffff880`00cfb000   CLFS     CLFS.SYS     Thu Jul 26 03:29:39 2012 (5010AB93)
fffff880`00cfb000 fffff880`00d1e000   tm       tm.sys       Thu Jul 26 03:29:01 2012 (5010AB6D)
fffff880`00d1e000 fffff880`00d33000   PSHED    PSHED.dll    Thu Jul 26 05:53:53 2012 (5010CD61)
fffff880`00d33000 fffff880`00d3d000   BOOTVID  BOOTVID.dll  Thu Jul 26 03:30:22 2012 (5010ABBE)
fffff880`00d3d000 fffff880`00dbc000   CI       CI.dll       Thu Mar 28 03:30:42 2013 (5153B962)
fffff880`00dbc000 fffff880`00de1000   rasl2tp  rasl2tp.sys  Thu Jul 26 03:23:16 2012 (5010AA14)
fffff880`00e00000 fffff880`00e49000   spaceport spaceport.sys Sat Oct 05 04:32:08 2013 (524F8838)
fffff880`00e49000 fffff880`00e61000   volmgr   volmgr.sys   Thu Jul 26 03:29:22 2012 (5010AB82)
fffff880`00e61000 fffff880`00ea9000   vm3dmp   vm3dmp.sys   Wed Oct 09 05:25:53 2013 (5254DAD1)
fffff880`00eb5000 fffff880`00f41000   cng      cng.sys      Thu Oct 11 06:17:34 2012 (5076566E)
fffff880`00f41000 fffff880`00f5b000   raspppoe raspppoe.sys Thu Jul 26 03:24:55 2012 (5010AA77)
fffff880`00f5c000 fffff880`00f99000   mpio     mpio.sys     Sat Sep 28 04:37:24 2013 (52464EF4)
fffff880`00f99000 fffff880`00fd3000   md3utm   md3utm.sys   Wed Aug 22 22:14:56 2012 (50354BD0)
fffff880`00fd3000 fffff880`00fef000   intelppm intelppm.sys Tue Nov 06 03:55:02 2012 (50988A16)
fffff880`01000000 fffff880`0106d000   ACPI     ACPI.sys     Thu Sep 20 07:09:16 2012 (505AB30C)
fffff880`01075000 fffff880`010d8000   msrpc    msrpc.sys    Thu Jul 26 03:28:37 2012 (5010AB55)
fffff880`010d8000 fffff880`0119a000   Wdf01000 Wdf01000.sys Sat Jun 22 04:13:05 2013 (51C51641)
fffff880`0119a000 fffff880`011aa000   WDFLDR   WDFLDR.SYS   Sat Jun 22 04:14:38 2013 (51C5169E)
fffff880`011aa000 fffff880`011c1000   acpiex   acpiex.sys   Thu Jul 26 03:25:57 2012 (5010AAB5)
fffff880`011c1000 fffff880`011cc000   WppRecorder WppRecorder.sys Thu Jul 26 03:29:07 2012 (5010AB73)
fffff880`011cc000 fffff880`011d6000   WMILIB   WMILIB.SYS   Thu Jul 26 03:30:04 2012 (5010ABAC)
fffff880`011d6000 fffff880`011f7000   raspptp  raspptp.sys  Thu Jul 26 03:23:13 2012 (5010AA11)
fffff880`01400000 fffff880`0140d000   vdrvroot vdrvroot.sys Thu Jul 26 03:27:29 2012 (5010AB11)
fffff880`0140d000 fffff880`01424000   pdc      pdc.sys      Fri Mar 01 04:58:34 2013 (5130357A)
fffff880`01424000 fffff880`0143e000   partmgr  partmgr.sys  Wed Jan 09 04:01:42 2013 (50ECEBA6)
fffff880`01444000 fffff880`0153f000   NDIS     NDIS.SYS     Sat Jun 15 06:11:35 2013 (51BBF787)
fffff880`0153f000 fffff880`015ae000   NETIO    NETIO.SYS    Thu Oct 11 06:16:20 2012 (50765624)
fffff880`015ae000 fffff880`015b8000   msisadrv msisadrv.sys Thu Jul 26 03:28:02 2012 (5010AB32)
fffff880`015b8000 fffff880`015f5000   pci      pci.sys      Thu Jul 26 03:27:43 2012 (5010AB1F)
fffff880`01800000 fffff880`01816000   datascrn datascrn.sys Thu Jul 26 03:29:13 2012 (5010AB79)
fffff880`01816000 fffff880`01824000   cbafilt  cbafilt.sys  Thu Jul 26 03:29:05 2012 (5010AB71)
fffff880`01824000 fffff880`0186c000   msiscsi  msiscsi.sys  Mon Feb 03 16:23:09 2014 (52EFC26D)
fffff880`0186c000 fffff880`01877000   kdnic    kdnic.sys    Thu Jul 26 03:27:41 2012 (5010AB1D)
fffff880`01877000 fffff880`01889000   umbus    umbus.sys    Thu Jul 26 03:27:39 2012 (5010AB1B)
fffff880`01889000 fffff880`018a9000   i8042prt i8042prt.sys Thu Jul 26 03:28:50 2012 (5010AB62)
fffff880`018a9000 fffff880`018b8000   kbdclass kbdclass.sys Thu Jul 26 03:28:47 2012 (5010AB5F)
fffff880`018b8000 fffff880`018c7000   mouclass mouclass.sys Thu Jul 26 03:28:47 2012 (5010AB5F)
fffff880`018c7000 fffff880`018e5000   parport  parport.sys  Thu Jul 26 03:29:53 2012 (5010ABA1)
fffff880`018e5000 fffff880`018fd000   serial   serial.sys   Thu Jul 26 03:30:01 2012 (5010ABA9)
fffff880`018fd000 fffff880`01952000   storport storport.sys Mon Feb 03 16:23:24 2014 (52EFC27C)
fffff880`01952000 fffff880`019b2000   fltmgr   fltmgr.sys   Thu Jul 26 03:30:09 2012 (5010ABB1)
fffff880`019b2000 fffff880`019e0000   quota    quota.sys    Thu Jul 26 03:29:14 2012 (5010AB7A)
fffff880`019e0000 fffff880`019f4000   dfsrro   dfsrro.sys   Thu Jul 26 03:29:13 2012 (5010AB79)
fffff880`019f4000 fffff880`01a00000   BATTC    BATTC.SYS    Thu Oct 11 06:19:58 2012 (507656FE)
fffff880`01a00000 fffff880`01a2c000   tunnel   tunnel.sys   Thu Jul 26 03:23:04 2012 (5010AA08)
fffff880`01a2c000 fffff880`01a3b000   CompositeBus CompositeBus.sys Thu Jul 26 03:28:03 2012 (5010AB33)
fffff880`01a3b000 fffff880`01a45000   vmgencounter vmgencounter.sys Thu Jul 26 03:27:58 2012 (5010AB2E)
fffff880`01a45000 fffff880`01c2a000   Ntfs     Ntfs.sys     Sun Jan 26 23:28:35 2014 (52E59A23)
fffff880`01c2a000 fffff880`01c45000   ksecdd   ksecdd.sys   Thu Sep 20 07:09:16 2012 (505AB30C)
fffff880`01c45000 fffff880`01c56000   pcw      pcw.sys      Thu Jul 26 03:28:44 2012 (5010AB5C)
fffff880`01c56000 fffff880`01c60000   Fs_Rec   Fs_Rec.sys   Thu Jul 26 03:30:08 2012 (5010ABB0)
fffff880`01c60000 fffff880`01c8f000   ksecpkg  ksecpkg.sys  Thu Oct 11 06:16:46 2012 (5076563E)
fffff880`01c8f000 fffff880`01cc0000   cdrom    cdrom.sys    Thu Jul 26 03:26:36 2012 (5010AADC)
fffff880`01cc0000 fffff880`01d2b000   dedup    dedup.sys    Sat Oct 05 04:31:38 2013 (524F881A)
fffff880`01d2b000 fffff880`01d3a000   vmrawdsk vmrawdsk.sys Sun Dec 15 03:36:38 2013 (52AD23C6)
fffff880`01d3a000 fffff880`01d47000   BasicRender BasicRender.sys Thu Jul 26 03:28:51 2012 (5010AB63)
fffff880`01d47000 fffff880`01d53000   mssmbios mssmbios.sys Thu Jul 26 03:29:19 2012 (5010AB7F)
fffff880`01d53000 fffff880`01d64000   discache discache.sys Thu Jul 26 03:28:23 2012 (5010AB47)
fffff880`01d64000 fffff880`01d85000   dfsc     dfsc.sys     Wed Jan 15 23:42:58 2014 (52D71D02)
fffff880`01d85000 fffff880`01d91000   ndistapi ndistapi.sys Thu Sep 20 07:09:19 2012 (505AB30F)
fffff880`01d91000 fffff880`01dc0000   ndiswan  ndiswan.sys  Thu Jul 26 03:23:13 2012 (5010AA11)
fffff880`01dc0000 fffff880`01dde000   rassstp  rassstp.sys  Thu Jul 26 03:23:59 2012 (5010AA3F)
fffff880`01dde000 fffff880`01df6000   AgileVpn AgileVpn.sys Thu Jul 26 03:23:11 2012 (5010AA0F)
fffff880`01df6000 fffff880`01dfc400   CmBatt   CmBatt.sys   Thu Jul 26 03:29:20 2012 (5010AB80)
fffff880`01e00000 fffff880`01e54000   CLASSPNP CLASSPNP.SYS Sat Jun 29 04:07:45 2013 (51CE4F81)
fffff880`01e54000 fffff880`01e68000   crashdmp crashdmp.sys Fri Aug 30 04:11:28 2013 (52200D60)
fffff880`01e75000 fffff880`01e7e000   Null     Null.SYS     Thu Jul 26 03:30:16 2012 (5010ABB8)
fffff880`01e81000 fffff880`020ba000   tcpip    tcpip.sys    Wed Jan 22 04:28:22 2014 (52DF48E6)
fffff880`020ba000 fffff880`02122000   fwpkclnt fwpkclnt.sys Fri Mar 01 04:55:54 2013 (513034DA)
fffff880`02122000 fffff880`0213d000   wfplwfs  wfplwfs.sys  Thu Oct 10 04:32:19 2013 (52561FC3)
fffff880`0213d000 fffff880`02191000   volsnap  volsnap.sys  Sat Jun 01 04:10:22 2013 (51A9661E)
fffff880`02191000 fffff880`021a8000   mup      mup.sys      Thu Jul 26 03:30:00 2012 (5010ABA8)
fffff880`021a8000 fffff880`021b4000   npsvctrig npsvctrig.sys Thu Jul 26 03:27:33 2012 (5010AB15)
fffff880`021b4000 fffff880`021d0000   disk     disk.sys     Sat Oct 12 07:31:15 2013 (5258ECB3)
fffff880`021ed000 fffff880`021ff000   dfs      dfs.sys      Thu Jul 26 03:28:21 2012 (5010AB45)
fffff880`03800000 fffff880`03863000   mrxsmb   mrxsmb.sys   Tue Feb 05 22:29:08 2013 (511187B4)
fffff880`0389c000 fffff880`038eb000   ks       ks.sys       Sat Feb 02 07:25:50 2013 (510CBF7E)
fffff880`038eb000 fffff880`038f6000   rdpbus   rdpbus.sys   Thu Jul 26 03:28:19 2012 (5010AB43)
fffff880`038f6000 fffff880`0390a000   NDProxy  NDProxy.SYS  Tue Apr 09 03:33:41 2013 (51637E05)
fffff880`0390a000 fffff880`03915000   flpydisk flpydisk.sys Thu Jul 26 03:30:15 2012 (5010ABB7)
fffff880`03915000 fffff880`03922000   dump_diskdump dump_diskdump.sys Thu Jul 26 03:29:58 2012 (5010ABA6)
fffff880`03922000 fffff880`0393f000   dump_LSI_SAS dump_LSI_SAS.sys Fri May 11 20:40:21 2012 (4FAD6B25)
fffff880`0393f000 fffff880`03947000   HIDPARSE HIDPARSE.SYS Sat Jun 29 04:08:18 2013 (51CE4FA2)
fffff880`03947000 fffff880`03955000   monitor  monitor.sys  Fri Mar 01 04:56:18 2013 (513034F2)
fffff880`03955000 fffff880`0397d000   luafv    luafv.sys    Thu Jul 26 03:29:13 2012 (5010AB79)
fffff880`0397d000 fffff880`03991000   lltdio   lltdio.sys   Thu Jul 26 03:24:02 2012 (5010AA42)
fffff880`03991000 fffff880`039a9000   rspndr   rspndr.sys   Thu Jul 26 03:24:06 2012 (5010AA46)
fffff880`039a9000 fffff880`039c9000   bowser   bowser.sys   Thu Jul 26 03:28:01 2012 (5010AB31)
fffff880`039c9000 fffff880`039e0000   mpsdrv   mpsdrv.sys   Thu Oct 31 03:42:19 2013 (5271D19B)
fffff880`03c00000 fffff880`03c73000   rdbss    rdbss.sys    Sat May 04 05:47:00 2013 (518492C4)
fffff880`03c73000 fffff880`03c8d000   wanarp   wanarp.sys   Tue Apr 09 03:31:00 2013 (51637D64)
fffff880`03c8d000 fffff880`03c9b000   nsiproxy nsiproxy.sys Thu Jul 26 03:25:00 2012 (5010AA7C)
fffff880`03c9b000 fffff880`03ca3000   vmmouse  vmmouse.sys  Mon Jun 04 10:34:25 2012 (4FCC8121)
fffff880`03ca3000 fffff880`03e0c000   dxgkrnl  dxgkrnl.sys  Thu Sep 19 04:16:23 2013 (523A6C87)
fffff880`03e0c000 fffff880`03e1d000   watchdog watchdog.sys Thu Jul 26 03:29:05 2012 (5010AB71)
fffff880`03e1d000 fffff880`03e6b000   dxgmms1  dxgmms1.sys  Wed Jan 09 03:58:58 2013 (50ECEB02)
fffff880`03e6b000 fffff880`03e7c000   BasicDisplay BasicDisplay.sys Thu Jul 26 03:29:08 2012 (5010AB74)
fffff880`03e7c000 fffff880`03e8e000   Npfs     Npfs.SYS     Thu Jul 26 03:30:26 2012 (5010ABC2)
fffff880`03e8e000 fffff880`03e9a000   Msfs     Msfs.SYS     Thu Jul 26 03:30:24 2012 (5010ABC0)
fffff880`03e9a000 fffff880`03ebc000   tdx      tdx.sys      Thu Jul 26 03:24:58 2012 (5010AA7A)
fffff880`03ebc000 fffff880`03eca000   TDI      TDI.SYS      Thu Jul 26 03:27:59 2012 (5010AB2F)
fffff880`03eca000 fffff880`03ed6000   ws2ifsl  ws2ifsl.sys  Thu Sep 20 07:09:50 2012 (505AB32E)
fffff880`03ed6000 fffff880`03f2e000   netbt    netbt.sys    Thu Jul 26 03:24:26 2012 (5010AA5A)
fffff880`03f2e000 fffff880`03fc4000   afd      afd.sys      Wed Sep 04 04:11:20 2013 (5226A4D8)
fffff880`03fc4000 fffff880`03fee000   pacer    pacer.sys    Thu Jul 26 03:23:05 2012 (5010AA09)
fffff880`03fee000 fffff880`03ffe000   netbios  netbios.sys  Thu Jul 26 03:28:19 2012 (5010AB43)
fffff880`03ffe000 fffff880`03fff480   swenum   swenum.sys   Thu Jul 26 03:28:53 2012 (5010AB65)
fffff880`0ac00000 fffff880`0acdf000   HTTP     HTTP.sys     Fri Mar 15 00:17:15 2013 (5142688B)
fffff880`0acdf000 fffff880`0ace7000   vmmemctl vmmemctl.sys Sun Dec 15 03:36:24 2013 (52AD23B8)
fffff880`0acf8000 fffff880`0ad43000   mrxsmb10 mrxsmb10.sys Thu Jul 26 03:23:06 2012 (5010AA0A)
fffff880`0ad43000 fffff880`0ad7e000   mrxsmb20 mrxsmb20.sys Tue Feb 05 22:28:36 2013 (51118794)
fffff880`0b200000 fffff880`0b20d000   condrv   condrv.sys   Thu Jul 26 03:30:08 2012 (5010ABB0)
fffff880`0b20d000 fffff880`0b2ae000   srv2     srv2.sys     Tue Apr 09 03:33:02 2013 (51637DDE)
fffff880`0b2cd000 fffff880`0b399000   peauth   peauth.sys   Tue Apr 09 03:32:01 2013 (51637DA1)
fffff880`0b399000 fffff880`0b3a4000   secdrv   secdrv.SYS   Wed Sep 13 14:18:38 2006 (4508052E)
fffff880`0b3a4000 fffff880`0b3e8000   srvnet   srvnet.sys   Tue Apr 09 03:31:13 2013 (51637D71)
fffff880`0b3e8000 fffff880`0b3fa000   tcpipreg tcpipreg.sys Thu Jul 26 03:23:13 2012 (5010AA11)
fffff880`0b4e3000 fffff880`0b570000   srv      srv.sys      Thu Jul 26 03:25:28 2012 (5010AA98)
fffff880`0b570000 fffff880`0b57b000   rdpvideominiport rdpvideominiport.sys Fri Oct 12 06:48:28 2012 (5077AF2C)
fffff880`0b57b000 fffff880`0b5ac000   rdpdr    rdpdr.sys    Thu Jul 26 03:25:18 2012 (5010AA8E)
fffff880`0b5ac000 fffff880`0b5b9000   terminpt terminpt.sys Thu Jul 26 03:28:53 2012 (5010AB65)
fffff960`00118000 fffff960`00508000   win32k   win32k.sys   Sat Feb 08 04:34:05 2014 (52F5B3BD)
fffff960`006cb000 fffff960`006d4000   TSDDD    TSDDD.dll    Thu Jul 26 03:30:25 2012 (5010ABC1)
fffff960`00879000 fffff960`008af000   cdd      cdd.dll      Thu Jul 26 05:49:37 2012 (5010CC61)
fffff960`00a21000 fffff960`00a60000   RDPUDD   RDPUDD.dll   Fri Oct 12 06:50:01 2012 (5077AF89)
Unloaded modules:
fffff880`01e68000 fffff880`01e75000   dump_storport.sys
    Timestamp: unavailable (00000000)
    Checksum:  00000000
    ImageSize:  0000D000
fffff880`021d0000 fffff880`021ed000   dump_LSI_SAS.sys
    Timestamp: unavailable (00000000)
    Checksum:  00000000
    ImageSize:  0001D000
fffff880`021a8000 fffff880`021b4000   hwpolicy.sys
    Timestamp: unavailable (00000000)
    Checksum:  00000000
    ImageSize:  0000C000
fffff880`00f41000 fffff880`00f5c000   sacdrv.sys
    Timestamp: unavailable (00000000)
    Checksum:  00000000
    ImageSize:  0001B000
fffff880`00c33000 fffff880`00c40000   ApiSetSchema.dll
    Timestamp: unavailable (00000000)
    Checksum:  00000000
    ImageSize:  0000D000
I have searched for others having a similar problem but have not managed to find much.
The memory dump at the time of the crash does seem to hint at a problem with DFSR.exe.
The setup seems to be running fine again now and is going through its consistency checks, it is just a major inconvenience and will only get worse as the DFS becomes busier and approaches capacity.
The plan was to put this setup into production however with the unpredictability of blue screen reboots I cannot see this happening until I can find a fix or work around.
I have yet to see this problem occur on the other (physical) server, this is pretty much identical in configuration apart from its storage access.
My thoughts are a possible bug in the DFSR component or a bug in the DSM Drivers used for the iSCSI SAN connection or maybe a combination of the two.
Any help, thoughts or suggestions greatly appreciated
Thanks

Hi,
Please install the current version of Dfssvc.exe Dfsc.sys Dfsrs.exe for Windows Server 2012.
List of currently available hotfixes for Distributed File System (DFS) technologies in Windows Server 2012 and Windows Server 2012 R2
http://support.microsoft.com/kb/2951262
The issue may be due to the DFSRoot folder has lost NTFS permission. Some reasons why DFS root lose ACLs Links are listed in the article below:
How to implement Windows Server 2003 Access-based Enumeration in a DFS environment
http://support.microsoft.com/kb/907458/en-us
You could use dfsutil to set NTFS permission: dfsutil property ACL \\DFS-namespace
Using the Windows Server 2008 DFSUTIL.EXE command line to manage DFS-Namespaces
http://blogs.technet.com/b/josebda/archive/2009/05/01/using-the-windows-server-2008-dfsutil-exe-command-line-to-manage-dfs-namespaces.aspx
To narrow down the issue, you could remove the DFS role to check if the issue related to the dfs namespace and dfs replication roles.
Regards,
Mandy
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      Machine processor count:       1
      OS version:                    Future Windows Version
      OS service pack:               
      OS region:                     United States
      OS language:                   English (United States)
      OS architecture:               x64
      Process architecture:          64 Bit
      OS clustered:                  No
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      Product              Instance             Instance ID                    Feature                
                     Language             Edition              Version         Clustered 
    Package properties:
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      ProductName:                   SQL Server 2012
      Type:                          RTM
      Version:                       11
      Installation location:         E:\x64\setup\
      Installation edition:          Evaluation
      Slipstream:                    True
      SP Level                       1
      Patch Level:                   11.1.3128.0
    Product Update Status:
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    Product Updates Selected for Installation:
      Title:                         Service Pack 1
      Knowledge Based Article:       KB 2674319
      Version:                       11.1.3000.0
      Architecture:                  x64
      Language:                      1033
      Title:                         SQL Server 2012 SP1 GDR Product Update
      Knowledge Based Article:       KB 2793634
      Version:                       11.1.3128.0
      Architecture:                  x64
      Language:                      All
      Update Source:                 MU
    User Input Settings:
      ACTION:                        Install
      ADDCURRENTUSERASSQLADMIN:      false
      AGTSVCACCOUNT:                 NT Service\SQLAgent$TESTDB
      AGTSVCPASSWORD:                *****
      AGTSVCSTARTUPTYPE:             Manual
      ASBACKUPDIR:                   Backup
      ASCOLLATION:                   Latin1_General_CI_AS
      ASCONFIGDIR:                   Config
      ASDATADIR:                     Data
      ASLOGDIR:                      Log
      ASPROVIDERMSOLAP:              1
      ASSERVERMODE:                  MULTIDIMENSIONAL
      ASSVCACCOUNT:                  <empty>
      ASSVCPASSWORD:                 <empty>
      ASSVCSTARTUPTYPE:              Automatic
      ASSYSADMINACCOUNTS:            <empty>
      ASTEMPDIR:                     Temp
      BROWSERSVCSTARTUPTYPE:         Automatic
      CLTCTLRNAME:                   <empty>
      CLTRESULTDIR:                  <empty>
      CLTSTARTUPTYPE:                0
      CLTSVCACCOUNT:                 <empty>
      CLTSVCPASSWORD:                <empty>
      CLTWORKINGDIR:                 <empty>
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      CTLRSVCPASSWORD:               <empty>
      CTLRUSERS:                     <empty>
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      ENU:                           true
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      FEATURES:                      SQLENGINE
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      FILESTREAMSHARENAME:           <empty>
      FTSVCACCOUNT:                  <empty>
      FTSVCPASSWORD:                 <empty>
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      IACCEPTSQLSERVERLICENSETERMS:  true
      INDICATEPROGRESS:              false
      INSTALLSHAREDDIR:              C:\Program Files\Microsoft SQL Server\
      INSTALLSHAREDWOWDIR:           C:\Program Files (x86)\Microsoft SQL Server\
      INSTALLSQLDATADIR:             <empty>
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      ISSVCSTARTUPTYPE:              Automatic
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      MATRIXCMSERVERNAME:            <empty>
      MATRIXNAME:                    <empty>
      NPENABLED:                     0
      PID:                           *****
      QUIET:                         false
      QUIETSIMPLE:                   false
      ROLE:                          <empty>
      RSINSTALLMODE:                 DefaultNativeMode
      RSSHPINSTALLMODE:              DefaultSharePointMode
      RSSVCACCOUNT:                  <empty>
      RSSVCPASSWORD:                 <empty>
      RSSVCSTARTUPTYPE:              Automatic
      SAPWD:                         *****
      SECURITYMODE:                  SQL
      SQLBACKUPDIR:                  <empty>
      SQLCOLLATION:                  SQL_Latin1_General_CP1_CI_AS
      SQLSVCACCOUNT:                 NT Service\MSSQL$TESTDB
      SQLSVCPASSWORD:                <empty>
      SQLSVCSTARTUPTYPE:             Automatic
      SQLSYSADMINACCOUNTS:           WIN-1V3VKPV5Q19\Administrator
      SQLTEMPDBDIR:                  <empty>
      SQLTEMPDBLOGDIR:               <empty>
      SQLUSERDBDIR:                  <empty>
      SQLUSERDBLOGDIR:               <empty>
      SQMREPORTING:                  false
      TCPENABLED:                    1
      UIMODE:                        Normal
      UpdateEnabled:                 true
      UpdateSource:                  MU
      X86:                           false
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      Component name:                SQL Server Database Engine Services Instance Features
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      Feature:                       SQL Browser
      Status:                        Passed
      Feature:                       SQL Writer
      Status:                        Passed
      Feature:                       SQL Client Connectivity
      Status:                        Passed
      Feature:                       SQL Client Connectivity SDK
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    2014-05-28 17:17:26.73 spid9s      Starting up database 'model'.
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    (01) 2014-05-28 17:17:28 Slp: Exception type: Microsoft.SqlServer.Configuration.SqlEngine.SqlEngineConfigException
    (01) 2014-05-28 17:17:28 Slp:     Message: 
    (01) 2014-05-28 17:17:28 Slp:         Wait on the Database Engine recovery handle failed. Check the SQL Server error log for potential causes.
    (01) 2014-05-28 17:17:28 Slp:     HResult : 0x851a001a
    (01) 2014-05-28 17:17:28 Slp:         FacilityCode : 1306 (51a)
    (01) 2014-05-28 17:17:28 Slp:         ErrorCode : 26 (001a)
    (01) 2014-05-28 17:17:28 Slp:     Data: 
    (01) 2014-05-28 17:17:28 Slp:       SQL.Setup.FailureCategory = ConfigurationFailure
    (01) 2014-05-28 17:17:28 Slp:       WatsonConfigActionData = INSTALL@CONFIGRC@SQL_ENGINE_CORE_INST
    (01) 2014-05-28 17:17:28 Slp:       WatsonExceptionFeatureIdsActionData = System.String[]
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    (01) 2014-05-28 17:17:28 Slp:         at Microsoft.SqlServer.Configuration.SqlEngine.SqlServerServiceSCM.StartSqlServer(String[] parameters)
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    (01) 2014-05-28 17:17:28 Slp: Parameter 6 : INSTALL@CONFIGRC@SQL_ENGINE_CORE_INST 
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    (01) 2014-05-28 17:17:28 Slp: Parameter 5 : SqlEngineDBStartConfigAction_install_configrc 
    (01) 2014-05-28 17:17:28 Slp: Parameter 6 : 0x9C5770A6 

    Hi Nababoya:
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    We
    are trying to better understand customer views on social support experience, so your participation in this
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    We
    are trying to better understand customer views on social support experience, so your participation in this
    interview project would be greatly appreciated if you have time.
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    TechNet Community Support

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    obtain the phone numbers for specific technology request, please refer to the web site listed below:
    http://support.microsoft.com/default.aspx?scid=fh;EN-US;OfferProPhone#faq607
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    Ji
    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected] .

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