From: Wheelock, Michael D (Michael.Wheelock@INTEGRIS-HEALTH.COM)
Date: Thu Jul 31 2003 - 10:14:32 EDT
Hi,
We have a fastt 700 (basically same software and design, but certainly the
same limitations on your question). Here is the skinny. What we are
actually talking about are two different and separate phases.
Phase 1
Dynamic array expansion. This is the phase where you add a new physical
unit to an existing array (which may contain multiple logical arrays). This
creates "unused space" in the array which can be used to create logical
arrays or expand existing ones.
Phase 2
Dynamic volume expansion. This is the phase where the volume/logical
array/lun/hdisk gets expanded. We actually tested this with AIX 5.1 and
5.2. According to the manuals I have read, dynamic volume expansion is
possible on AIX 5.1 and 5.2. This is, however, a lie. AIX 5.2 is the only
revision that is capable of DVE. The extra capacity is seen by running
cfgmgr, but the second step is to adjust the logical volume to include more
pp's. This involves the chvg -g command (which is only in 5.2). I actually
placed a support call about this that was escalated to "engineering". They
basically stated that the manual is wrong. On the other hand, in AIX 5.2 it
works like a charm.
Michael
-----Original Message-----
From: Peter McKay [mailto:Peter.McKay@INFINITY.CO.NZ]
Sent: Wednesday, July 30, 2003 9:10 PM
To: aix-l@Princeton.EDU
Subject: FAStT 600 and AIX
Good people,
I'm trying to understand some of the technology in the FAStT storage
management in regards to AIX. The marketing from IBM suggests that only
Netware, Linux, Win2K Dynamic Disks, and Winnt4 logical disks on a FAStT
array can be capacity expanded.
If I expand a logical volume (on the FAStT) can I then utilize the extra
capacity with AIX 5? My assumption is yes, because the Logical Volume
Manager will see the extra capacity (may have to run cfgmgr) and will then
be able to be expanded.
Kind Regards,
Peter McKay
Technical Consultant
Infinity Solutions
Unit 3, 1 Show Place
Addington, Christchurch
Ph: (03) 9637965, Mob: (027) 2301884
Fx: (03) 9637941
www.infinitysolutions.co.nz <http://www.infinitysolutions.co.nz/>
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