any specific hardware for service guard

[Shivkumar]

Dear Sirs,

Does Service Guard needs any particular hardware ? We have K,L, M,and N class series machines.

Appreciate your help.

Thanks,
Shiv

[Pete Randall · Accepted solution]

No, any of those should do just fine. You simply don't want your failover machine to be overwhelmed when it has to assume the load, so choose machines that are similar in capacity.


Pete

[Florian Heigl (new acc)]

unless talking about 4-wheeled systems I don't know an M-class system ;)

other than that, the requirements for running SG won't be much more than having enough I/O slots available (plan for 2x fc/scsi and 3x lan in the systems)

Also I'd personally not take the K-Class for it's very long reboot times.
Even while a cluster will maintain availability, all it's components should have reasonal availability, too...

In case You experience a race condition and all nodes TOC, You'll be very unhappy not being able to just hit 'RS' on the first system You reach and be up and running 15 minutes later.

[melvyn burnard]

Yes. It requires HP server systems, as listed in the Managing Serviceguard manuals available at
http://docs.hp.com/en/ha

I would also recommend you attend the 5 days Serviceguard course offered by HP Customer Education

[generic_1]

Those systems will work, but
make sure you have enough resources handle a failover situation.
Also make sure you have at least two lan cards, two fiber channel cards,two disk paths, power supplies fully populated, ect so you have a true high availability environemnt. The reason I mention this is that you may want to purchase these needed items ahead of time. It only works on HPUX systems.

[Kent Ostby]

Shiv --

There are also some limitations on what types of systems can be grouped together due to I/O slots and HW stuff, etc.

Again these will be covered in the document that Melvin references above.

[Mahesh Kumar Malik]

Hi Shiv

Server Type does not matter for Service Guard. Following requirements are preferable:

1. Three Network Cards, one for heart beat and two for fialover to each other.

2. Redundant storage paths

3. Shared External Storage

Regards
Mahesh

[Kent Ostby]

One other hardware consideration.

When you hook up the I/O between two machines, you'll need to change the SCSI address on one of the machines on the bus from 7 to 6 and address your disks using other addresses.

If you forget this step, the symptom will be that things will work fine if one or the other system is booted but a hang or panic will occur when both systems are booted.

Best regards,

Oz