error on \Device\Harddisk11\DR26 but Disk 11 doesn't exist

windows-server-2008-r2

On a Windows 2008R2 server, I am getting this message in Event Viewer:

Log Name:      System
Source:        Disk
Date:          7/3/2013 4:25:54 AM
Event ID:      51
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Description:
An error was detected on device \Device\Harddisk11\DR26 during a paging operation.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Disk" />
    <EventID Qualifiers="32772">51</EventID>
    <Level>3</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-07-03T08:25:54.828401000Z" />
    <EventRecordID>115066</EventRecordID>
    <Channel>System</Channel>
    <Security />
  </System>
  <EventData>
    <Data>\Device\Harddisk11\DR26</Data>
    <Binary>030080000100000000000000330004802D0100000E0000C000000000000000000000000000000000BE009A0500000000FFFFFFFF010000005800000802000008FD200A1242032040000200003C0000001080838780FAFFFF483DF28780FAFFFF0000000000000000D0285A0281FAFFFF0000000000000000008841060000000028000641880000000100000000000000000000000000000000000000000000000000000000000000</Binary>
  </EventData>
</Event>

However, there is no disk 11 on this server. The disks stop at 10.

disk management mmc showing disks 9, 10, and the DVD drive

This particular server is a Hyper-V host in a cluster. All of the disks are either CSV disks or pass-through disks, all backed by iSCSI.

How can I identify which drive this is?

wmic does not list the drive:

Caption                                     DeviceID             Model                                       Partitions  Size
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE5   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           2418923243520
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE9   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           1069286400
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE10  LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           1759214661120
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE4   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           1979117521920
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE7   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           80525491200
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE8   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           536864025600
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE2   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           536864025600
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE3   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           536864025600
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE1   LEFTHAND iSCSIDisk  Multi-Path Disk Device  1           322118415360
LEFTHAND iSCSIDisk  Multi-Path Disk Device  \\.\PHYSICALDRIVE6   LEFTHAND iSCSIDisk  Multi-Path Disk Device  0           1069286400
HP LOGICAL VOLUME SCSI Disk Device          \\.\PHYSICALDRIVE0   HP LOGICAL VOLUME SCSI Disk Device          2           220122071040

This is a bit of a WAG but have you tried recompiling the iSCSI MOF files? I've come across similar behavior where NetApp's SnapDrive can't enumerate all the of the iSCSI drives on a particular server. This blog pointed me at this KB2001997.

Try comparing the results of the following WMI query on this server to another known good one:

Get-WmiObject -NameSpace Root\WMI MSiSCSIInitiator_PersistentDevices

error on \Device\Harddisk11\DR26 but Disk 11 doesn't exist

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