Hi Andy!
The 2969 Ethernet adapter is a 64-bit adapter and slot 1 and 2 are the only
64-bit slots in a H70. The manual I used is SA38-0538-23
(http://publib16.boulder.ibm.com/pseries/en_US/infocenter/base/hardware_docs
/pdf/380538.pdf) which I assume is the 23rd edition...
I have 6 LTO1 drives which are daisy-chained in pairs. The 6203 adapter has
two SCSI connectors, so drive 1 and 2 are daisy-chained to connector 1 of
card 1, drive 3 and 4 are daisy-chained to connector 2 of card 1 and drive 5
and 6 are daisy-chained to connector 1 of card 2.
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
-----Original Message-----
From: Wilcox, Andy [mailto:andy.wilcox AT AQUILA-NETWORKS.CO DOT UK]
Sent: Tuesday, January 27, 2004 16:32
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: AIX adapter placement
Always a pig this one but in terms of number of buses the H70 only has one
PCI bus according to the 11th edition of the adapter Placement Guide,
although I have worked with them in the past and I though there were two
buses, with the at least the first two PCI slots on a different bus to the 6
remaining. If there is only bus though, then you don't really have much
choice about "bunching" your SSA and SCSI adapters together, as it will make
no difference where you put them. What I wouldn't mind knowing is how your 6
LTO drives are connected. I am guessing that you have 4 SCSI, with 2
attached to each SCSI adapter, and two FC drives off the FC adapter. Also it
will be worth knowing what you Ethernet traffic is like in terms of volume.
The reason I ask about this is (subject to my assumption of having two
buses) where can you place the GbE card. According to my old 11th Ed. of the
guide you can put the Ethernet card in IBM order of preference in slot 1, 5,
then 2, followed by 7, so in essence you could put split your SCSI and SSA
cards across busses.
Many thanks
Andy Wilcox
UNIX Systems Administrator
Aquila Networks
-----Original Message-----
From: Loon, E.J. van - SPLXM [mailto:Eric-van.Loon AT KLM DOT COM]
Sent: 27 January 2004 14:08
To: ADSM-L AT VM.MARIST DOT EDU
Subject: AIX adapter placement
Hi *SM-ers!
Maybe this post is a little bit off-topic for some of you, if so: sorry...
I have to reconfigure my H70 in the very near future. It's badly configured
now (incorrectly placed adapters, incorrect SSA loops, too low on memory,
etc.) which results in rather poor performance.
The box will be equipped with the following adapters with their requirements
(source: Adapter Placement Reference for AIX, SA38-0538-23):
1) Gigabit Ethernet adapter (FC 2969) (must be in slot 1, slot 2 empty if
possible)
2) 2 SCSI adapters (FC 6203) (any slot)
3) 2 SSA adapters (FC 6215) (any slot)
4) Gigabit Fibre Channel Adapter (FC 6227) (must be in slot 3 or 4)
I was thinking about the following layout:
Slot 1: Gigabit Ethernet adapter
Slot 2: empty
Slot 3: Gigabit Fibre Channel Adapter
Slot 4: empty
Slot 5: SSA adapter 1
Slot 6: SCSI adapter 1
Slot 7: SSA adapter 2
Slot 8: SCSI adapter 2
I'm a little bit worried about the placement of the SSA and the SCSI
adapters on one PCI bus. Will this cause a bottleneck (for instance, during
migration from disk to tape (6 LTO drives in a 3584))? If so, do you suggest
a better layout?
Thank you very much in advance for your reply!
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
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or any of their group undertakings (as defined by the Companies Act 1989)
(together referred to as the "Companies") accept legal responsibility for
this message or liability for the consequences of any computer viruses which
may have been transmitted by this e-mail.
Monitoring: All electronic communications with the Companies may be
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Lawful Business Practice Regulations, 2000. If you do not consent to such
monitoring, you should contact the sender of this e-mail.
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