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359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Ramesh.K.R.
Regular Advisor

359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Hi Experts,

Can use "sautil" to configure this disk array ??
OR What is the best method to be used for configuring this disk array (creating VG's, LV's)

Thanks & Regards,
Ramesh
hai
9 REPLIES
Ramesh.K.R.
Regular Advisor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Some more info...

I am using "ia64 hp server rx2620" (Itanium) and HPUX 11.23.

Ramesh
hai
Uwe Zessin
Honored Contributor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

The MSA30 is just a disk drive enclosure with no embedded RAID controller. You need to find out if it is connected to a simple SCSI HBA or a SmartArray controller in your server.
.
Torsten.
Acclaimed Contributor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Hi,

it depends. If the enclosure is connected to a "simple" SCSI controller, you can configure every single disk as a single device.
If you have the enclosure connected to a smartarray controller, you have to use "sautil".
An "ioscan" will tell you the details.
A smart array looks like this:

ext_bus 4 0/2/1/0/4/0 ciss CLAIMED INTERFACE PCI-X SmartArray 6402 RAID Controller

Hope this helps!
Regards
Torsten.

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Ramesh.K.R.
Regular Advisor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Hi,

What i have is not just MSA30, but The muli-initiator (MI) model 359645-B21.
But, i don,t have the Smart Array Controller. The MSA30 is connected to normal SCSI (Ultra320) card.
So, i have only the manulal option for creating PV / VG / LV ??

Regards,
Ramesh
hai
Torsten.
Acclaimed Contributor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

The use of the MI interface is, that you can connect 2 servers (or at least 2 controllers) to each half of the MSA30.
Because of this you must set the controller ID of 1 of the controllers (HBA) from 7 so 6.

What your server can see is every single disk in the MSA (ioscan -fn). Now use pvcreate, vgcreate ... or just SAM to configure the disk.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
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Ramesh.K.R.
Regular Advisor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

Hi Torsten,

Is it a must to change the HBA SCSI ID's even if i am connectying 2 stand alone servers to the MSA ??
I thought this is required only when the MSA is used in a cluster...
Pl clarify.

NOTE: Currently i have connected 2 servers to the MSA w/o changing the HBA SCSI ID. But, i can see only 7 disks each(unique), in different servers. i.e. i can see only the disks connected to bus A in one server & the other server sees only the disks connected to bus B of MSA.

Regards,
Ramesh
hai
Torsten.
Acclaimed Contributor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

The MI module has 4 connectors (A1,A2, B1,B2). The A connectors are connected to the bus A, the same for B.

If you connect 1 server to A1 and 1 server to A2, you MUST reconfigure one of the HBAs from 7 to 6 - otherwise you have a scsi id conflict.

Hope this helps!
Regards
Torsten.

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Ramesh.K.R.
Regular Advisor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

So, it is not required to change the SCSI ID, if i have connected one server to A bus (A1 or A2) and the other server to B bus (B1 or B2), right ??

Also, if i want to use MSA in cluster, what should be the connection like ??
(i.e. server1 to A1, server2 to A2 ?? OR server1 to A1, server2 to B1 & A2 cross connected to B2 ??)

Regards,
Ramesh.K.R.
hai
Torsten.
Acclaimed Contributor

Re: 359645-B21 (HP MSA30 4PORT HPUX /IA64 Linux JBO Encl)

"So, it is not required to change the SCSI ID, if i have connected one server to A bus (A1 or A2) and the other server to B bus (B1 or B2), right ??"

YES!

The sense of the cluster connection is to enable both servers to access the *same* disks.

Thatswhy you need to connect server 1 to A1, server 2 to A2 (the same for B) and adjust the SCSI ID for 1 server. I would set both controllers to 6 for one server.
Depending on your server model you may do this using "mptutil".

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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