Data error (cyclic redundancy check).

Hi dynamox,

reagarding the device all are RW

"

Device Configuration     : RAID-6          (Meta Head,
                                             Non-Exclusive Access)

Device is WORM Enabled   : No
Device is WORM Protected : No

SCSI-3 Persistent Reserve: Enabled

Dynamic Spare Invoked    : No

Dynamic RDF Capability   : None

STAR Mode                : No
STAR Recovery Capability : None
STAR Recovery State      : NA

Device Service State     : Normal

Device Status            : Ready            (RW)
Device SA Status         : Ready            (RW)

and for falg settings i enabled sc3,spc2,os2007,as you can see from this output

Originator Port wwn  : 2100001b329a92de

Type                 : Fibre

User-generated Name  : 2100001b329a92de/2100001b329a92de

Visibility           : No

FCID Lockdown        : No

Lun Offset           : No

Heterogeneous Host   : No

Port Flag Overrides  : Yes

   Enabled            : SCSI_3(SC3)

                        SPC2_Protocol_Version(SPC2)

                        SCSI_Support1(OS2007)

   Disabled           : N/A

Dynamic Addressing   : No

Authentication State : N/A

Devices              : 08CA 08D0 0985 0991 099D

device is write enabled ? All Win2k8 flags are set properly (at FA or HBA level ? )

don't think you need SCSI-3 Persistent Reserve unless it's a Win2k8 Cluster ? Using PowerPath ?

what do you mean dynamic device ? Thin device ? Was it bound to a pool ?

Do you mean device with DYN_RDF flag? That wont cause this issue. I have a feeling that device had some kind of lock on the backend. I have seen in the past that devices which are moved across the FA ports may left with some strange locks that do not allow devices to be initialized on Windows and lock needs to be removed from the backend (its not the device lock)

Did you check with PSE labs at the time of the issue?

regards,
Saurabh

Hi dyanmox..

it is Win2k8 Cluster and alsa powerpath installed on it..dynamox now issue is resolved..i assigned them a dynamic device.

now i removed it assigned a standard device.But i have a doubt..even though i assigned them a dynamic device it is not

writed disable..can u tell me why it did not initialize.

i mean it is DYN_RDF device..