About ioscan -fnCdisk results NO_HW in SAN environment.

[zykoo]

Hi. friends

I have an MSA1000 array with an MSA fabric 6 switch module,If directly I connect a HP_UX server to MSA fabric 6 switch,I got the disks state was "CLAIMED",whereas,I also have a HP entry switch 8B (Fabric OS: v3.0.2f)and i want use it for trial,after I cascade it with MSA fabric 6 switch,the disks from MSA1000 array that the state was change to "NO_HW",i don't know why and i haven't any ideas for that problem.pls lead me to fix that problem :D

Thank you in advance and sorry for my bad english.



I lists some reference information followings:(Any other information you want,plz tell me know in reply.)

HP entry switch 8B :

Switch:admin> version
Kernel: 5.3.1
Fabric OS: v3.0.2f

Switch:admin> switchshow
switchName: Switch
switchType: 16.2
switchState: Online
switchMode: Interop
switchRole: Principal
switchDomain: 120
switchId: fffc78
switchBeacon: OFF
Zoning: OFF
port 0: id N2 Online E-Port 10:00:00:e0:24:12:11:70 (downstream)
port 1: id N2 Online F-Port 50:06:0b:00:00:25:df:3e

Switch:admin> configshow
Ethernet addresses: 0:60:69:c0:1b:7d

Nvram datadata: fei(0,0)host:/usr/switch/firmware e=192.168.102.103:ffffff00 g=192.168.102.1 u=user tn=Switch

Type to continue, Q to stop:
diag.postDisable: 0
fabric.domain: 120
fabric.ops.BBCredit: 16
fabric.ops.E_D_TOV: 2000
fabric.ops.R_A_TOV: 10000
fabric.ops.dataFieldSize: 2112
fabric.ops.mode.SeqSwitching: 0
fabric.ops.mode.fcpProbeDisable: 0
fabric.ops.mode.isolate: 0
fabric.ops.mode.longDistance: 0
fabric.ops.mode.noClassF: 0
fabric.ops.mode.pidFormat: 1
fabric.ops.mode.sync: 1
fabric.ops.mode.unicastOnly: 0
fabric.ops.mode.useCsCtl: 0
fabric.ops.mode.vcEncode: 0
fabric.ops.vc.class.2: 2
fabric.ops.vc.class.3: 3
fabric.ops.vc.config: 0xc0
fabric.ops.vc.linkCtrl: 0
fabric.ops.vc.multicast: 7
fabric.ops.wan_rtt_dly_max: 200
fabric.ops.wan_tov: 0

MSA fabric switch 6:

switchrole:subordinate
domainID:121
zone:OFF

HP_UX server:

# ioscan -fn|grep NO_HW
fcp 0 0/8/0/0.1 fcp NO_HW INTERFACE FCP Domain
ext_bus 4 0/8/0/0.1.6.0.0 fcparray NO_HW INTERFACE FCP Array Interface
target 6 0/8/0/0.1.6.0.0.0 tgt NO_HW DEVICE
disk 3 0/8/0/0.1.6.0.0.0.0 sdisk NO_HW DEVICE COMPAQ MSA1000 VOLUME
disk 4 0/8/0/0.1.6.0.0.0.1 sdisk NO_HW DEVICE COMPAQ MSA1000 VOLUME
disk 5 0/8/0/0.1.6.0.0.0.2 sdisk NO_HW DEVICE COMPAQ MSA1000 VOLUME
ext_bus 5 0/8/0/0.1.6.255.0 fcpdev NO_HW INTERFACE FCP Device Interface
target 7 0/8/0/0.1.6.255.0.0 tgt NO_HW DEVICE
ctl 4 0/8/0/0.1.6.255.0.0.0 sctl NO_HW DEVICE COMPAQ MSA1000
ext_bus 6 0/8/0/0.1.239.255.0 fcpdev NO_HW INTERFACE FCP Device Interface
target 8 0/8/0/0.1.239.255.0.1 tgt NO_HW DEVICE
ctl 5 0/8/0/0.1.239.255.0.1.0 sctl NO_HW DEVICE Compaq MSA Fabric Sw 6
fcp 1 0/8/0/0.99 fcp NO_HW INTERFACE FCP Domain

[Víctor Cespón]

MSA SAN switch 6 was sold with the MSA1000 long time ago, and has since been replaced with a Brocade 2/8 switch.

The MSA SAN switch 6 cannot be connected to any other switch (it's not Brocade, McData or Cisco), cannot interact with your other switches.

That switch was sold as a cheap option but do not expect too much from it: almost no documentation, no fimware updates...

[zykoo]

Thank you vcespon.

From what you say,i have no way to merge them in proper working order.
and i found this information (http://findarticles.com/p/articles/mi_m0BRZ/is_12_20/ai_77081850/)
Is this information indicate if they are both have FC-SW-2 open fabric standard? then they
will working normally.

Regards

[zykoo]

Thank you vcespon.

From what you say,i have no way to merge them in proper working order.
and i found this information http://findarticles.com/p/articles/mi_m0BRZ/is_12_20/ai_77081850/
Is this information indicate if they are both have FC-SW-2 open fabric standard? then they will working normally.

Regards

[Víctor Cespón · Accepted solution]

There's very little documentation about that switch model. The user guide only talks about connecting it to another identical switch.

This was sold for customers with small environments (maximum 5 servers). If you're going to use an external Brocade switch, you can try to replace the SAN Switch 6 with an FC I/O module.

[zykoo]

Im afraid to change MSA 6 switch is the only way for this situation.

Thanks for your helps,vcespon