topic Re: Command View EVA, add host, type for polyserve in Storage Software

Command View EVA, add host, type for polyserve

G de Groot — Mon, 22 Sep 2008 06:30:03 GMT

I've got a EVA 8100 with Command View EVA 7.X
and i like to add a disk larger than 2 TB to My HP Clustered gateway e.g. matrix polyserve CIFS server.
The host type in Command View is Windows. Windows can only use disks up to 2 TB.
Can anyone advise or point me to some documentation if its allowed to change the host type, and to which type, to get the disk over 2 Tb

Thanks in advance
Gerald de Groot

Re: Command View EVA, add host, type for polyserve

IBaltay — Mon, 22 Sep 2008 07:18:11 GMT

Hi,
till now it is a EVA firmware limitation (1LUN max=2TB) but it can be done e.g. via the LVM (VG from multiple smaller VDISKs) on the host side if it is Linux...

Re: Command View EVA, add host, type for polyserve

IBaltay — Mon, 22 Sep 2008 07:24:03 GMT

one additional,
HP Polyserve Matrix server can be implemented on Windows/Linux. Then the host type depends on the platform to which it is installed ...

Re: Command View EVA, add host, type for polyserve

G de Groot — Mon, 22 Sep 2008 07:28:22 GMT

Thanks for the reply. For now it is installed on a windows host.
If i understand it correct, it is impossible to make a lun bigger than 2 Tb with the EVA ?

Gerald

Re: Command View EVA, add host, type for polyserve

IBaltay — Mon, 22 Sep 2008 07:30:35 GMT

yes, the 2TB LUN size is a EVA max (there are plans to give bigger LUNs in the EVA4400 future firmware releases)

Re: Command View EVA, add host, type for polyserve

Steven Clementi — Mon, 22 Sep 2008 15:21:06 GMT

Keep in mind that, like in a linux/unix operating system... you can combine multiple disks using the disk manager in Windows.

The question is how strapped are you with needing a LUN larger than 2TB vs. having a second LUN.

Personally, I am not sure if I would so such a thing... even on a linux/unix system.

I am sure the technology has advanced some since we used to do this on NT4 back in the day. ;o)

Steven

Re: Command View EVA, add host, type for polyserve

David Tapper_1 — Wed, 24 Sep 2008 12:39:08 GMT

Hi Gerald,

You must use Windows host mode in the EVA.
Use the Polyserve volume manager to build a bigger volume containing several virtual disks from your EVA.

Regards,
David

Re: Command View EVA, add host, type for polyserve

Emil Velez — Sat, 28 Feb 2009 01:20:20 GMT

2T is usually a lun limitation of the OS.

Polyserve can use any lun the OS can see across all of the nodes.

Polyserve allows you to stripe a volume or put multiple luns together to form a volume > 2T.