HP StorageWorks EVA iSCSI Connectivity Option 3.0 Release Notes (5697-6148, October 2006)

• Adatecode,inyyyy-mm format followed by another dot (.)

• A reverse domain name

• Optional colon (:) prefixed by a string

If only using ASCII characters (U+0000 to U+007F), the following characters are allowed:

• ASCII dash character (’-’ = U+002d)

• ASCII dot character (’.’ = U+002e)

• ASCII colon character (’:’ = U+003a)

• ASCII lower-case characters (’a’..’z’ = U+0061..U+007a)

• ASCII digit characters (’0’..’9’ = U+0030..U+0039)

NOTE:

See section 3.2.6 of Request for Comments (RFC) 3720 (iSCSI) for a description of the iSCSI name

string profile. You can access RFC 3720 at: ftp://ftp.rfc-editor.org/in-notes/rfc3720.txt.

Workaround

Follow the correct iqn name syntax as described in section 3.2.6 of RFC 3720.

For Windows—In the initiator GUI, click Reset under Change in the General tab to reset the iqn name

to its original name that was created when you installed the initiator.

For Linux—Edit the InitiatorName setting in the /etc/initiatorname.iscsi file using the

correct syntax.

For Linux and Windows—Reinstalling the initiator creates a valid iqn name.

iSCSI initiator LUNs disappear after changing the initiator iqn name

The mpx100 maintains a database of targets, initiators and LUNs and the corresponding links between

them. Whenever Command View presents or unpresents a LUN to an iSCSI initiator, it updates the

mpx100’s database. When a new iqn name logs into the mpx100, it is considered a new initiator and

no LUNs are assigned to it. All LUN assignments to the old iqn are still maintained.

Workaround

Using Command View EVA, unpresent the LUN from the old initiator iqn and then present it to the

new initiator iqn name. Remove the old initiator from the mpx100 database with either the mpx100

Manager GUI or the CLI.

Windows iSCSI initiators must add Tcp1323Opts to registry

Timestamps help TCP measure round trip time (RTT) accurately to adjust retransmission timeouts. The

Timestamps option provides two timestamp fields of 4 bytes each in the TCP header: one to record the

time the initial transmission is sent and one to record the time on the remote host.

To enable timestamps, the Tcp1323Opts entry must be set to REG_DWORD = 2 under

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters.

Installing the Windows iSCSI initiator from the HP StorageWorks iSCSI Connectivity Option for Enterprise

Virtual Array Windows software kit automatically adds this registry setting.

EVA iSCSI Connectivity Option 3.0