You should have attended the recently concluded Solutions Symposium in
California, or plan to attend the one coming up on the East Coast. HP's
Walt McCullough did a brilliant presentation on these devices.
I will try to answer some of the questions:
1- You need the dual controller. One controller will be connected to
the HP 3000, the other controller will be connected to a Windows system
to configure and manage the array.
2- See answer #1.
3- If the controller will be connected to an FC card on the 3000, you
should create a maximum of 16 LUNs (ldevs) (20GB each). If the array
will be connected via an HVD or LVD SCSI connection, plan on a maximum
of 8 LUNs (ldevs) (40GB each). If it's connected via SE-SCSI, plan on
updating your resume. Just kidding, don't do it that way.
Denys
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
Behalf Of John MacLerran
Sent: Monday, April 05, 2004 9:58 AM
To: [log in to unmask]
Subject: [HP3000-L] A couple of VA7100 Questions
Dear HP3000-L folks,
We may be purchasing a refurb VA7100 (to replace a couple of Nikes that
go
off support on June 30 '04) this week or next, and I had a couple of
questions regarding what to purchase.
1. We're hoping to get a dual-controller 7100; I've read that each
controller stores its own copy of the array configuration, in order to
be able to fail over if one controller goes bad. However, I've also
read that the 3000 (an N4000 box) doesn't automatically fail over, so if
we have one controller on the array that goes bad, we'll still have to
unplug the FC cable from the failed controller and reattach to the good
controller -- kind of a 'manual failover'. Is my understanding correct?
If so, is there any benefit to getting two adapter cards for the e3000
box?
2. The array comes with SDM commandview software for one host. From my
reading, I've discovered that either HP-UX or Windows can be used to
configure the array. My question is: how does the configuration host
access the array? Is there a serial port used for configuration, or will
we need a FC adapter card for whatever host we use for configuration?
3. (ok, a 'few' questions, not a 'couple' :-) We're planning on
getting nine of the 15kRPM 36GB drives. Is there a 'best way' to
calculate LUN size? (we're planning on using RAID 1+0 and not RAID5, for
performance reasons.)
I'd appreciate any insight anyone can offer. Many thanks to donna for
the assistance she's already provided.
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