Huawei SAN Storage – How To
UltraPath installation and check
Huawei SAN Storage – How To :
UltraPath installation and check
Huawei SAN Storage – How To
UltraPath installation and check
In this technology briefing we will see how to install Ultrapath and make sure it is implemented
properly.
Ultrapath is the Huawei technological equivalent of the standard Multipath.
Ultrapath and Multipath are solutions that increase the speed of the communication channel
between application servers and SAN storages by a multiple connection: this also allows
redundancy to the connection.
These connections can be both iSCSI and fiberchannel, also combined in a non homogenous
fashion.
Huawei SAN Storage – How To
UltraPath installation and check
The Ultrapath software takes care to correctly identify the individual LUN units, being
exposed simultaneously by more different channels, since it may look like you have more
disks than those that are actually available. Substantially, if a SAN provides a LUN through
three distinct channels of communication, the server that does not have a Multipath
installed, sees 3 disc units instead of just one.
In addition to this important function, Ultrapath hides problems that may arise on the
application server in case a redunded connection fails.
The installation is simple: Huawei provides the CD with the setup of Ultrapath for various
operating systems; the package that we take into consideration is the one for windows (in
the directory WIndows \ Packages), and it is the same for all versions of this operating
system (eg, Windows 2008 R2, Windows 2012, Windows 2012R2), except for Itanium IA64 ,
which has a separate reference file.
Huawei SAN Storage – How To
UltraPath installation and check
The release currently available is 5.01.074
Huawei SAN Storage – How To
UltraPath installation and check
Begin with the classic double-click, and windows that will open are equally classic: it asks the
name of the software holder, and continues till the end without requiring any parameters, except
at one point when it asks trust the Huawei software: please flag also "Always trust etc ...".
Huawei SAN Storage – How To
UltraPath installation and check
To verify if there were troubles or similars, check the list
of system devices (devmgmt.msc or equivalent), under
the section Storage Controllers (or SCSI Controllers,
depending on the windows version): the Ultra-Path
Support (virtual) device must be available, without any
warning icon.
Huawei SAN Storage – How To
UltraPath installation and check
Simultaneously, on the desktop, a new icon becomes available: ultrapath console. Restart the
server as required.
Now you can run the ultrapath console and enter into the main window
Huawei SAN Storage – How To
UltraPath installation and check
This window provides both
an alarm management
identical to the one we
have already seen in the
ISM (Integrated Storage
Manager), and, more
important, a small
navigation tree on the
left, which lists various
data repeated in more
than one place. In the above example, note that the application server has two
physical paths to the SAN, and that these (column Port Type) are of
FC type (Fiber Channel).
Huawei SAN Storage – How To
UltraPath installation and check
Similarly, if you choose the leaf LUN, it is intuitive that we have only one, named LUN1_R5_1,
but with 2 physical paths that support it.
Huawei SAN Storage – How To
UltraPath installation and check
Now we can see how Windows can handle the LUN we are trying to use: for this matter you need
to open the Disk Manager (diskmgmt.msc or equivalent).
LUNs appear for the first time as OFFLINE disks: to
use them, simply click with the right mouse button
and choose ONLINE.
If it is already formatted, Windows automatically
assigns a drive letter. Otherwise, proceed manually
as if it were any hard disc.
If the new disc does not appear, please force a new
inventory via the menu option "ACTION" and then
"Rescan Disks" (this same procedure must be done
if a LUN has been removed from the availability of
the server).
Huawei SAN Storage – How To
UltraPath installation and check
More needs?
See hints on www.ipmax.it
Or email us your questions to [email protected]
Huawei SAN Storage – How To
UltraPath installation and check
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