Inter rack Patching advice

Hi All
We are designing a new Comms equipment room for our client. For Interconnectivity between core devices between two racks in the same Comms room, is it best practice to go via a patch panel, (either in the same rack or external patch panel). My collegue insists that all connections going from rack to another rack should go via a patch panel. My arguement is that if we can connect them directly and cable run can be neatly run, then why go via a patch panel. This will also reduce points of failures.
What are the pros and cons for using patch panel in this case or is this a data centre recommended best practice or something?
Thanks in advance.

It mostly comes down to cost and sometimes on rack availability, or just preference.
Panels panels in normal cabinets (containing routers and edge swithces). But having patch panels inside the aggregation switch cabinet is nice and neat, but depending on how dense the connectivity , (example a rack with a nexus 7010/7018 fully populated with linecards) the rack might not have enough space for all the fibre trays required. Take it one step further. Generally you will have two Nexus 7000 switches, and given the way the nexus is redundantly configured, the above setup is just above duplicated, doubling the fibre patch panels required.
This is where more attention to cable management is required. Basically three options.
Panels within each aggregation cabinet. Most expensive options, but allows best cabling control.
Central aggregation patching cabinet with overhead or underfloor cable guide ducts. Cheaper option, but a pain to install/troubleshooting cabling.
Central aggregation patching cabinet located between the two aggregation switch cabinets, with the sides removed. This can be done neatly with inter-rack cabling guides. Cheapest option, easy to do cabling, but neatness is less.
Besides the aggregation cabinets, having a patchpanel in each cabinet should be driven by the cabling needs of that cabinet. It saves cost hugely to do a inrack panel appose to EOR (End-of-Row) or MOR (Middle-of-Row).
hth

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Hello,
You need to apply support packs (ST-PI etc.) & kernel patches on PR1.
Since there's just one database (usually on a shared storage), you don't need to repeat any of these activities on the second node.
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Edited by: Saba Sheikh on Sep 9, 2009 11:54 AM

Question about design - use patch-panels or switches in racks?

I'm trying to suggest should I use patch-panels in server 19" racks and use stand-alone telecomm racks for access layer switches
OR
should I install 2-3 access layer switches in every server rack?
First version looks more correct, but than I have to use MUCH MORE cables, organizers etc - all of it eats place in data-center.
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2 or 3 access layer switches in every server rack? Considering typical stand-alone rack switches offer 24 or 48 ports, how many servers per rack or how big are these racks?! Or, were your intended access layer switches only 4 port switches?! (laugh)
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Besides "looking right", the foregoing is often why there are server rack patch panels, etc.
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You have 2 options here Jordi, either you can use BGP loadbalancing, this requires multipath as BGP by default would only install one route from the BGP table to the RIB hence FIB.
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Alternatively to extend this by IGP signaling to redirect traffic preferably to rack1 to start with to minimize the IRL usage.
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You have 2 options here Jordi, either you can use BGP loadbalancing, this requires multipath as BGP by default would only install one route from the BGP table to the RIB hence FIB.
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Headphone Mixes from Logic

I am considering rationalising my studio to a mixerless set up ( see Jim Frazier's comments in a recent thread http://discussions.apple.com/message.jspa?messageID=8174674#8174674)
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ii) Is it practical and easy to create separate software mixes ( say one for horn section and one for percussionist) in Logic and route them to headphones via outputs of the Presonus/Mackie Big Knob type studio control box? Do you use Software Monitoring and is latency an issue here?
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m s

Hi ms,
I'd be curious what the other "mixerless" guys are doing as well, but I can tell you how I'm managing things here.
In my studio, I have dedicated mic pres, so I don't plug my mics into an audio interface. The mics get plugged from the mic preamps right to the converters, which in my case, is a Apogee Rosetta 800, as well as Lavry 4496's.
I have XRL jacks out in the studio, and these jacks have their cable run through the wall, and into the control room, where they terminate to a patch bay. I also have the ins and outs of my mic pres, and hardware compressors coming up at the patch bay, as well as the I/O's of my converters. Basically, any piece of gear in my control room with an input and output is set-up to be available at the patch bays.
So when I plug a mic into the XLR wall jack out in the studio, I simply connect patch cables at the patch bay, to designate whatever signal flow I want for that session. This is how the "big" studios have done it for decades, and once you take the time and money to set this up, you'll kick yourself for not doing it sooner.
I too, do all overdubs here at my studio, Any live tracking with a rhythm section, is always done elsewhere. But aside from me recording my own guitars, I too often work with percussionists, horn sections, string players, and vocal groups, sometimes as many as 6 to 8 singers at a time.
My solution for having separate headphone mixes without a mixer was to get a dedicated headphone system. I ended up going with the Hear Technologies Hear Back system.
http://www.heartechnologies.com/hb/hearbackintro.htm
This system can send something like ten different audio paths to the Hearback satellite mixers, where the talent out in the studio can customize their mix to their hearts content. However, I don't ever give anyone THAT much control . I keep it pretty simple... a stereo mix of the track, a "more me" knob, so they can control their voice or instrument level within the track, and I also give a reverb send, so they can add reverb to their voice or instrument, without me ever having to hear it in the control room.
This system is fed from the separate outputs of my converters, and my Logic template that all songs start from is set-up so that all my Aux tracks are feeding this headphone hub in the manner I described above. So all routing does take place from within Logic.
I do monitor with software monitoring on, but it wasn't until I got the Apogee Symphony system that I was able to do that reliably. Before the Apogee system, I used the Total mix latency free software that came with my RME FF800, much like the cue mix software that came with your MOTU piece. But monitoring in software outside of Logic always felt "left footed" to me. I MUCH prefer the DAW work like a tape machine as far as that aspect goes.
And I do have to admit, it's finally nice to be able monitor through Logic, in real time, with no perceivable latency at all. I went 6 years without a mixer, waiting for technology to allow this type of performance from a native system. The Apogee Symphony card along with the 8 core MacPro finally got me there.
And as I mentioned in that thread you linked to, I use a Presonus Central Station as talkback to the talent, as well as a master control room volume knob, and speaker selector.
All in all, it's working out really, really well.
I will say though, that having a dedicated hardware mixer is not necessarily a "bad" thing, and until you have a system where latency THROUGH Logic is basically undetectable, I would move slowly, and cautiously. It's imperative that the talent be able to hear their instrument or voice as they are used to. Any detectable latency, even a small amount, WILL deteriorate a performance, no matter what any body tries to tell you. And, it makes your studio appear "semi-pro".
Latency free software like Cue Mix or Total Mix can make the mixerless studio a reality though, when throughput latency is detectable. It worked for me for years.
If I can answer any more questions, don't hesitate to ask...

NV Clustering

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On the ASR 9001 do we have integrated eboc ports that are seperate to the 4 X 10GE ports?
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2 Intel Xserves, both running fast and both unable to connect to Server Mon

Hey guys -
Since this is happening to two identical machines, I'm wondering if I'm just not doing something right.
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When I initially set them up, I disabled LOM on them. However, I can't connect to either of them using the Server Monitor. This is being done locally through a belkin KVM switch, so it's nothing to do with firewall issues. They're both on two networks, a private one (for the Xsan metadata) and a public one that operates through proxy servers. Currently, neither of them can physically connect to the internet (owing to an error in the proxy settings I'm guessing), both other machines in the local network and see them and connect to them.
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well, I done fixed it.
After I got LOM up and running (127.0.0.1 was the way to go), I was able to see that the CPU intake fans were all blowing at a strong 16K rpm. Not a good sign, even though there were no warning lights going off and everything was reported as green and normal. Since this SAN lived in a hushrack (two servers and two RAIDs all told), I first tried to isolate airflow out of the equation by removing the back enclosure and opening the front door. Even after the heat dissipated, it ran at top speed. I ran all software updates possible, installed the OS onto an empty hard drive, and still got the same thing. I yanked one of the systems out of the rack it was in and swapped the fibre card from slot 1 to slot 2. I started it back up before returning it to the rack and, goodness me, it topped off between 5K-6K. I was so happy with myself that I tossed it back into the rack, patched it all back in, and fired it up. Boom. After about a minute of being on, it rocketed upwards straight to 16K rpm.
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BEx Analyzer Problems. Advice on Patches

Hi.
We are having some probles with BEx Analyzer.
For instance.
1. Run the query in BEx Analyzer and it displays different results in RSRT than in BEx Analyzer.
2. Dates sometimes have the day and month the wrong way around from what is stored in the cube field.
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your frontend is indeed "old"... we're on Support Package 8, Patch 1, Revision 1443
try upgrading the front end first... it might solve a lot of your issues already
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OWB 10.2.0.4 patch application failed and seek advice.

Hi,
I have read some posts in this forum and tried to solve my problem with OWB 10.2.0.4 patch application. My basic situation is: OWB 10.2.0.3 was installed by someone before. Now developer only can get OWB 10.2.0.4 client. It can not access into existing OWB 10.2.0.3 repository because the version is not matched. I have to apply OWB patch 10.2.0.4 to OWB server. Installing patch is OK. After that, I need to create a test repository to upgrade OWB 10.2.0.3 repository to 10.2.0.4. When I tried to do so. I failed to either a new test repository or even accessed into existing repository. I got different errors as INS0009, ORA-01017 and LRM-00109 with the message as 'unable to connect to database with user SYS, invdlid username/password' Then I followed advices from another thread. Done these steps:
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You don't answer to my question (about name of password file), maybe your problem is caused by incorrect filename.
Also please show instance name with select from v$instance:
select instance_name from v$instance;
Do you show me how to check this?What is the filesystem type where Oracle software installed?
In Windows Explorer open directory ORACLE_HOME\database, rightclick on password file and select Properties from menu.
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Patching and backup process advice

Hello all ,
I have solaris 8 and I had a few questions about patching and backup.
1. Monthly I download the Sun 'Recommended and Security patchset", I then unzip and run patch_add.
When I review the terminal output while this is running I get quite a few :"unable to install patch exit code 8".
Should I be getting this?
Is there another way of applying patches(other than individually)?
2. What are good backup practices? Copy /etc and /var directories to a raid? Or is there a Sun tool for backups?
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I believe this is a list of exit codes for patches. You'll most likely see a lot of return code 8 and 2. Not typically an issue.
# Exit Codes:
# 0 No error
# 1 Usage error
# 2 Attempt to apply a patch that's already been applied
# 3 Effective UID is not root
# 4 Attempt to save original files failed
# 5 pkgadd failed
# 6 Patch is obsoleted
# 7 Invalid package directory
# 8 Attempting to patch a package that is not installed
# 9 Cannot access /usr/sbin/pkgadd (client problem)
# 10 Package validation errors
# 11 Error adding patch to root template
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# 13 Symbolic link included in patch
# 14 NOT USED
# 15 The prepatch script had a return code other than 0.
# 16 The postpatch script had a return code other than 0.
# 17 Mismatch of the -d option between a previous patch
# install and the current one.
# 18 Not enough space in the file systems that are targets
# of the patch.
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# 20 A direct instance patch was required but not found
# 21 The required patches have not been installed on the manager
# 22 A progressive instance patch was required but not found
# 23 A restricted patch is already applied to the package
# 24 An incompatible patch is applied
# 25 A required patch is not applied
# 26 The user specified backout data can't be found
# 27 The relative directory supplied can't be found
# 28 A pkginfo file is corrupt or missing
# 29 Bad patch ID format
# 30 Dryrun failure(s)
# 31 Path given for -C option is invalid
# 32 Must be running Solaris 2.6 or greater
# 33 Bad formatted patch file or patch file not found
# 34 The appropriate kernel jumbo patch needs to be installed
Back up your system before adding any patches (ufsdump). It's recommended that these patches are added in run level one.
There should be a script called something like "install_cluster" command in the 8_Recommended directory that you can use to add the patches.
By default the patches create backout info in /var, but I usually disable this (yeah, livin' on the edge) with the "-nosave" option.

I probably misclicked when I activated the security lock on the iPhone and now I can not figure out what password I entered. Moreover, I have patches and funky looking phone so I can not restore iphine pres itunes. Please advice.

I probably misclicked when I activated the security lock on the iPhone and now I can not figure out what password I entered. Moreover, I have patches and funky looking phone so I can not restore iphine pres itunes. Please advice.

Your only recourse is to force it into DFU mode:
Turn your phone off and connect your cable to the computer, but not the device just yet. Start up iTunes. Now, hold down the home button on your phone and plug it in to the cable - don't let go of the button until iTunes tells you it's detected a phone in recovery mode. Now you can restore to factory settings.

Advice on Oracle Patches/Oracle Support

I'd like some advice here... I am of the opinion to NEVER apply an Oracle patch without getting direction to do so from Oracle Support to correct an existing issue. I have some colleagues who believe we should apply certain patches based on success they have had in other environments and do so without involving Oracle Support.
Can someone please offer some guidance here on what might be the best practice?
Thanks

Personally, it would depend on the "we" you're referring to and on the environment...
If you're an application vendor that knows that your product hits a particular bug relatively frequently or you've got home-grown apps that hit multiple databases in your organization that all hit a particular bug relatively frequently because of known similarities in architecture/ design/ implementation, I'd have no problems applying a patchset to all the systems. If you find that it's easier to maintain a bunch of different databases if they all run identical patchsets, I could also see that argument as potentially having some merit.
On the other hand, if you're talking to someone that wants to apply a patch because it solved a problem at some other site that may or may not resemble your site, I'd probably steer clear.
Justin

Inter rack Patching advice

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