RE: HMC or LAN Console

HMC.  One HMC can easily be configured to control all 3 i5s.  

If you're in to redundancy/fault tolerance, you can put an HMC in each
data center and configure each to control all 3 i5s.  In that scenario,
you'd not only have centralized control (using either HMC) but
redundancy as well in case something happened to one HMC or to the link
between data centers.

Also, a big nod towards the HMCs is that if you do decide to LPAR later
on, you've already got the management station(s) to handle it.

BTW, you do not have to order IBM'$ KVM solution if you get a rack mount
HMC.  Any KVM (and KVM switch for that matter) should work fine so you
can feel free to add it to the KVM switch you may be using with your
Windows boxes.

The only downside I've noticed on the HMC is that it seems to want to be
rebooted every once in a while, like every few months.  If you don't,
when you do eventually reboot it will run a full disk scan (CHKDSK
equivalent) that can take a while.  I noticed this once when I powered
down our rack to move it to a new data center (in the same building).
When I brought it back up it said it had been more than 180 days since
*something* and ran the CHKDSK equivalent as part of the boot process,
keeping me from powering up the i5 for a few extra minutes.



John A. Jones, CISSP
Americas Information Security Officer
Jones Lang LaSalle, Inc.
V: +1-630-455-2787 F: +1-312-601-1782
john.jones@xxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
ChadB@xxxxxxxxxxxxxxxxxxxx
Sent: Monday, May 15, 2006 9:03 AM
To: midrange-l@xxxxxxxxxxxx
Subject: HMC or LAN Console



For a non-LPAR shop running 3 different 520s in 2 different locations (2
at one site and 1 at the other), would you choose an HMC or a LAN
Console setup?  Reliability, security, and managability are the main
concerns rather than a difference in cost.
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