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OceanStor 5500T V1 System reports disk drive's error when Windows host-cluster validates

Publication Date:  2015-12-15 Views:  1380 Downloads:  7
Issue Description
One Windows Server R2 2012 Datecenter builds connection with OceanStor S5500T V1 and does LUN mapping. After the customer builds Windows cluster on the host, he makes the cluster environment verification. The verification results report that there are some disk drive errors.
Alarm Information

Cluster verification error, as follows:

Handling Process
Microsoft digital signature actually is used to identify software vendors, in order to check whether the software has not been tampered by malicious tampering or virus, whether the software is safe and reliable. Due to a long time to prepare the signature verification and Huawei UltraPath own version releases frequently, Huawei UltraPath does not make digital signature certification in Microsoft, but it uses its own Huawei software signature. This way can also ensure the security of UltraPath software.

Due to the customer insists on the security verification of Microsoft signature, help customer to install the Windows systems Windows MPIO (Multi-Path IO Microsoft) to resolve customer concerns.

Root Cause

According to Windows official illustration, the disk drive error in the cluster verification means that driver software doesnt get Windows official signature authentication:

Huawei UltraPath is installed on this host, and all the hard disks come from the S5500T storage, which reports drive error in the cluster verification.

Huawei UltraPath takes over the disks mapped from the storage. It encapsulates and manages the Huawei Lun upon the SCSI layer of operating system, to perform the functions of the disk drive. But Huawei UltraPath software does not make the digital signature authentication with Microsoft. It doesnt get Windows official signature authentication. This causes: when Huawei UltraPath manages Huawei disk mapped as the disk drive, once Windows OS makes the driver software signature verification, then all the disks which are took over by UltraPath will report the disk drive digital verification failed.


If the customer needs the signature certification or doubts the security of the UltraPath software, it can be explained with the principle of the digital signature. If the customer insists on the security verification of Microsoft signature, you can use the Windows systems Windows MPIO (Multi-Path IO Microsoft) to resolve customer concerns:

1.      Step 1, Enable ALUA on the storage system.

You can determine whether to enable ALUA when adding an initiator to the host. Choose Yes in Enable ALUA, as shown in Figure :


2.      Step 2, Add Multipath I/O.

Start Serer Manager, choose Feature, and select Multipath I/O, as shown in Figure :


3.      Step 3, Query device VID and PID.

VID: indicates the vendor ID, for example, HUAWEI.

PID: indicates the product ID, for example, S5500T or S5600T.

In Device Management, right-click the SCSI device that you want to add and choose Properties from the shortcut menu. In the dialog box that is displayed, choose Hardware Ids from the Property drop-down list to view VID and PID, as shown in Figure:

As shown in the preceding figure, VID is HUASY and PID is S5600T.

If MPIO is installed on Windows 2008 or later versions, you can use multipathing command mpclaim to query disk information, as shown in Figure:

As shown in the preceding figure, VID is HUAWEI and PID is S2600.

Notes: The PID and VID in this section are examples only. PID and VID are subject to actual conditions.


4.      Step 4, Start the MPIO console.

Choose Start > Administrator Tools to start the MPIO console, as shown in Figure:


5.      Step 5, Add storage devices that you want to manage.

In MPIO Device, click Add. If iSCSI Initiator interworks with MPIO, choose Add Support for iSCSI device from the Discover Multi-Paths menu.


Note :

A VID must be eight bytes long and a PID 16 bytes long. If a VID or PID contains fewer bytes, use spaces as placeholders. Most devices are automatically discovered and are displayed as Others in Discover MultiPaths. You can add the devices by clicking Add.

The VID and PID added here are used as examples only. Actual VID and PID prevail.

Restart the host to for the MPIO configuration to take effect.


6.      Step 6, View MPIO policies.

Rescan for disks after restarting the host. Ensure that the number of discovered disks is consistent with that of LUNs mapped to the host. Right-click a disk and choose Properties from the shortcut menu. You can view the policies on the MPIO tab page, as shown in Figure:

Huawei UltraPath works with different host operating system, which is related with the compatibility, connectivity. Sometimes because of some objective reasons, such as the host also connects with the storage device of other vendor, so it cant use Huawei UltraPath to take over all the disks. Suggest that using the operating systems own multiple-path software. Huawei storage is compatible with the industry's mainstream operating systems own multiple-path. When do the host connectivity settings, it needs to do some special configuration with the characteristics of Huawei storage, which can refer to “the Huawei storage host connectivity guide".