HP 4400 HP StorageWorks Enterprise Virtual Array release notes (XCS 09534000) - Page 16

HP MPIO EVA DSM requirement, Array I/O can halt after a power cycle with an HP-UX host - driver

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http://support.microsoft.com/default.aspx?scid=KB;EN-US;886807 • Use the MPIO DSM CLI to set the load balancing policy for each LUN to NLB. Microsoft is currently working on a resolution to address this issue. HP MPIO EVA DSM requirement HP recommends that you always install the latest version of HP MPIO EVA DSM. If you use HP SmartStart EVA Storage to install HP Command View EVA on your Windows 2003 or Windows 2008 management server, HP MPIO EVA DSM version 4.00.00 and DSM Manager are installed automatically. You can always download the latest DSM Manager and HP MPIO EVA DSM from HP's website: http://www.hp.com/support/downloads 1. Under Storage, select Storage Software. 2. Under Storage Infrastructure Software, select Other Multi-Path Software-Windows. 3. Select Windows MPIO DSM for EVA. 4. Select the appropriate Windows operating system. 5. Do one of the following: • For MPIO DSM, select HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 and EVA4400 families of Disk Arrays. • For DSM Manager, select HP MPIO DSM (Device Specific Module) Manager for Full Featured DSMs. See the release notes included with the download file for more information. Array I/O can halt after a power cycle with an HP-UX host I/O halts after power cycling an HSV300-S enclosure connected to an HP-UX 11.23 host with HP-UX driver versions earlier than B.11.23.08.02. To resolve this issue, either upgrade to version B.11.23.08.02, or reset the HBAs on any server affected after an HSV300-S is power cycled. Reboot can be required after EVA power cycle to resume access to LUNs If an EVA4400 experiences a power cycle while the management GUI for Windows MPIO DSM is open, the LUNs might not appear under Disk Management after they recover. This issue is seen when the MPIO DSM Manager snap-in is open at the time of a power cycle. To reduce the probability of this occurring, HP recommends that you close the GUI when you are not performing management actions. If this problem occurs, follow these steps: 1. Close the HP MPIO DSM Manager GUI. 2. Close Disk Management. 3. Stop and restart the Virtual Disk services. 4. Open Disk Management, and then rescan or Diskpart rescan to enumerate the LUNs. If these steps are not successful, reboot the server. 16

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•
Use the MPIO DSM CLI to set the load balancing policy for each LUN to
NLB
.
Microsoft is currently working on a resolution to address this issue.
HP MPIO EVA DSM requirement
HP recommends that you always install the latest version of HP MPIO EVA DSM. If you use HP
SmartStart EVA Storage to install HP Command View EVA on your Windows 2003 or Windows
2008 management server, HP MPIO EVA DSM version 4.00.00 and DSM Manager are installed
automatically. You can always download the latest DSM Manager and HP MPIO EVA DSM from
HP's website:
h
t
tp://w
w
w
.hp
.co
m/su
ppo
r
t/do
w
nloads
1.
Under Storage, select
Storage Software
.
2.
Under Storage Infrastructure Software, select
Other Multi-Path Software-Windows
.
3.
Select
Windows MPIO DSM for EVA
.
4.
Select the appropriate Windows operating system.
5.
Do one of the following:
•
For MPIO DSM, select
HP MPIO Full Featured DSM for EVA4x00/6x00/8x00 and EVA4400
families of Disk Arrays
.
•
For DSM Manager, select
HP MPIO DSM (Device Specific Module) Manager for Full Featured
DSMs
.
See the release notes included with the download file for more information.
Array I/O can halt after a power cycle with an HP-UX host
I/O halts after power cycling an HSV300-S enclosure connected to an HP-UX 11.23 host with HP-UX
driver versions earlier than B.11.23.08.02. To resolve this issue, either upgrade to version
B.11.23.08.02, or reset the HBAs on any server affected after an HSV300-S is power cycled.
Reboot can be required after EVA power cycle to resume access to LUNs
If an EVA4400 experiences a power cycle while the management GUI for Windows MPIO DSM is
open, the LUNs might not appear under Disk Management after they recover. This issue is seen when
the MPIO DSM Manager snap-in is open at the time of a power cycle. To reduce the probability of
this occurring, HP recommends that you close the GUI when you are not performing management
actions.
If this problem occurs, follow these steps:
1.
Close the HP MPIO DSM Manager GUI.
2.
Close Disk Management.
3.
Stop and restart the Virtual Disk services.
4.
Open Disk Management, and then rescan or Diskpart rescan to enumerate the LUNs.
If these steps are not successful, reboot the server.
16