topic Re: mirror Disk / UX connection type in Operating System - HP-UX

mirror Disk / UX connection type

peter demus — Tue, 14 Jan 2003 11:35:32 GMT

Hello !

Can I use MirrorDisk/UX only on SCSI bus ? or can i also use Fibre Channel or iSCSI (ethernet on 1000MBit NIC) or the heartbeat link (100mbit NIC) on HPUX 11.00.

i want to set up a test cluster (mc/sg) with 2 rp2400 and internal disks only.

is that possible ?
or can i only mirror the internal disks toit self ?

thanks peter

Re: mirror Disk / UX connection type

Eugeny Brychkov — Tue, 14 Jan 2003 11:40:27 GMT

Peter,
when you run 'ioscan -fnC disk' and see disk devices, then it means that you can include these disks into volume group(s) and setup mirroring for them. Please note that mirroring is done on logical volume level, not on physical or volume group level.
It does not matter which device you have: external or internal - the main thing that class is 'disk'
Eugeny

Re: mirror Disk / UX connection type

Claudio Aguiar — Wed, 15 Jan 2003 12:31:22 GMT

Peter,

To configure the MC/ServiceGuard cluster you need have external disks connected on both machines, because the adotive node must have access on the volumes owned by the package to adopt the services of the failure node

Re: mirror Disk / UX connection type

Bob_Vance — Wed, 15 Jan 2003 18:27:52 GMT

For testing purposes, you do not have to have externally shared disks. You can set up test packages that require no external storage. To get around the lock disk requirement, you can set up a 3rd server, if available, as a quorum server. It is *not* part of the cluster (and can server multiple clusters), but merely serves as a quorum mechanism -- it is freely downloadable from HP's online software depot.

Of course, without external storage, you'll not be able to test this part of the real-world equation -- usually the most important!

bv