Dual Netboot Server

I have two identical servers with the following hardware specs that will be used as Netboot servers to support about 100 clients concurrently, and I want to know what my options are to make it as fast and reliable as possible. Any suggestions would be highly appreciated.
Xserve (2009)
OS: 10.6.8
CPU: 2.93GHz Quad-Core Intel Xeon
RAM: 6GB
Storage: One 160GB and two 1TBs
RAID Card: Yes
Ethernet Interface: 2
Network: Cisco Catalyst 2900 series switches
Questions:
Can I have both servers run netboot on the same subnet?
What are my options for load balancing?
Which RAID Set is better?
Thank you in advance!

Hi
"Can I have both servers run netboot on the same subnet?"
Yes.
"What are my options for load balancing?"
Assuming I've understood you correctly and if you're only referring to the NetBoot Service, you have to create nbis with the 'image will be served from more than one server' option enabled. If you already have nbis created and you did not enable the option you'd have to re-create them again. I could be wrong but I don't think you can enable that option retrospectively?
In my experience NetBoot works 'best' if the NetBootSP0 folder is stored on a non system drive.
"Which RAID Set is better?"
RAID 1 - Mirror is one option assuming you want redudancy? There's no real performance 'hit' with NeBoot as apart from storing nbis, you're not really doing much else. For performance RAID 0 - Stripe. There'd be no redundancy and if a drive was to fail there's a real risk of losing all the data. You'd have to factor in a backup strategy which would involve extra hardware. You should be thinking about doing this anyway as a RAID is not a backup. If you want a blend of Performance and Redundancy, RAID 5 would be the other option given the hardware you have. You would lose - with the drive capacities listed - capacity if you chose this option.
Create Virtual Bonds on both XServes if the Switch supports Port Aggregation/Trunking.
Gigabit to Desktop is preferred as 10/100 struggles once you get beyond 24 clients in my experience.
My 2p
Tony

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05/16/2004 08:37:30:406 PM CEST: Thread[Thread-23,5,main]
adminDN-> uid=amAdmin,ou=People,dc=bih,dc=net,dc=ba
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05/16/2004 08:37:31:070 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:31:283 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:31:295 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:31:297 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:31:308 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:31:313 PM CEST: Thread[Thread-23,5,main]
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05/16/2004 08:37:46:730 PM CEST: Thread[Thread-28,5,main]
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05/16/2004 08:37:46:730 PM CEST: Thread[Thread-28,5,main]
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05/16/2004 08:37:46:760 PM CEST: Thread[Thread-28,5,main]
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05/16/2004 08:41:50:616 PM CEST: Thread[Thread-29,5,main]
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05/16/2004 08:41:50:616 PM CEST: Thread[Thread-29,5,main]
bindDN-> cn=amldapuser,ou=DSAME Users,dc=bih,dc=net,dc=ba
baseDN-> o=bih.net.ba,dc=bih,dc=net,dc=ba
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userSearchAttr(s)-> [uid]
userCreationAttrs-> []
searchFilter->
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05/16/2004 08:41:50:622 PM CEST: Thread[Thread-29,5,main]
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05/16/2004 08:41:50:628 PM CEST: Thread[Thread-29,5,main]
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05/16/2004 08:41:50:629 PM CEST: Thread[Thread-29,5,main]
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05/16/2004 08:43:45:894 PM CEST: Thread[Thread-30,5,main]
LDAP resbundle locale=en_US
05/16/2004 08:43:45:974 PM CEST: Thread[Thread-30,5,main]
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05/16/2004 08:43:45:974 PM CEST: Thread[Thread-30,5,main]
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05/16/2004 08:43:45:975 PM CEST: Thread[Thread-30,5,main]
LDAP initialize()
05/16/2004 08:43:45:975 PM CEST: Thread[Thread-30,5,main]
attrs is : []
05/16/2004 08:43:45:978 PM CEST: Thread[Thread-30,5,main]
bindDN-> cn=amldapuser,ou=DSAME Users,dc=bih,dc=net,dc=ba
baseDN-> o=bih.net.ba,dc=bih,dc=net,dc=ba
userNamingAttr-> uid
userSearchAttr(s)-> [uid]
userCreationAttrs-> []
searchFilter->
searchScope-> 2
ssl-> false
authLevel: 0
Host: sis1.bih.net.ba
PORT : 389
Pattern : *|(|)|&|!
05/16/2004 08:43:45:984 PM CEST: Thread[Thread-30,5,main]
Connecting to sis1.bih.net.ba:389
Searching o=bih.net.ba,dc=bih,dc=net,dc=ba for (uid=amdin)
scope = 2
05/16/2004 08:43:45:989 PM CEST: Thread[Thread-30,5,main]
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05/16/2004 08:43:45:991 PM CEST: Thread[Thread-30,5,main]
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05/16/2004 08:45:46:145 PM CEST: Thread[Thread-31,5,main]
LDAP resbundle locale=en_US
05/16/2004 08:45:46:172 PM CEST: Thread[Thread-31,5,main]
currentState : 1
05/16/2004 08:45:46:173 PM CEST: Thread[Thread-31,5,main]
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05/16/2004 08:45:46:173 PM CEST: Thread[Thread-31,5,main]
LDAP initialize()
05/16/2004 08:45:46:174 PM CEST: Thread[Thread-31,5,main]
attrs is : []
05/16/2004 08:45:46:174 PM CEST: Thread[Thread-31,5,main]
bindDN-> cn=amldapuser,ou=DSAME Users,dc=bih,dc=net,dc=ba
baseDN-> o=bih.net.ba,dc=bih,dc=net,dc=ba
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userSearchAttr(s)-> [uid]
userCreationAttrs-> []
searchFilter->
searchScope-> 2
ssl-> false
authLevel: 0
Host: sis1.bih.net.ba
PORT : 389
Pattern : *|(|)|&|!
05/16/2004 08:45:46:179 PM CEST: Thread[Thread-31,5,main]
Connecting to sis1.bih.net.ba:389
Searching o=bih.net.ba,dc=bih,dc=net,dc=ba for (uid=admin)
scope = 2
05/16/2004 08:45:46:184 PM CEST: Thread[Thread-31,5,main]
Cannot authenticate
05/16/2004 08:45:46:185 PM CEST: Thread[Thread-31,5,main]
Invalid password.

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Go to Solution.

I_am_Nivek wrote:
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You'll be most likely to get help with this problem if you ask in the Mac OS X 10.6 Server forum:
https://discussions.apple.com/community/servers_enterprise_software/mac_os_x_ser ver_v10.6_snow_leopard
Regards.

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11/16/12 1:36:54.159 PM bootpd[6740]: BSDP INFORM [en1] 1,a8:20:66:31:ad:e0 NetBoot006 arch=i386 sysid=Macmini6,1
11/16/12 1:36:54.160 PM bootpd[6740]: NetBoot: [1,a8:20:66:31:ad:e0] BSDP ACK[SELECT] sent 172.16.124.63 pktsize 388
11/16/12 1:37:46.498 PM bootpd[6740]: BSDP INFORM [en1] 1,a8:20:66:31:ad:e0 NetBoot006 arch=i386 sysid=Macmini6,1
11/16/12 1:37:46.498 PM bootpd[6740]: NetBoot: [1,a8:20:66:31:ad:e0] BSDP ACK[LIST] sent 172.16.124.63 pktsize 380
11/16/12 1:37:47.018 PM bootpd[6740]: BSDP INFORM [en1] 1,a8:20:66:31:ad:e0 NetBoot006 arch=i386 sysid=Macmini6,1
11/16/12 1:37:47.018 PM bootpd[6740]: NetBoot: [1,a8:20:66:31:ad:e0] BSDP ACK[SELECT] sent 172.16.124.63 pktsize 388
11/16/12 2:03:21.107 PM netbiosd[148]: name servers down?
11/16/12 2:04:50.429 PM bootpd[6791]: BSDP INFORM [en1] 1,a8:20:66:31:ad:e0 NetBoot006 arch=i386 sysid=Macmini6,1
11/16/12 2:04:50.429 PM bootpd[6791]: NetBoot: [1,a8:20:66:31:ad:e0] BSDP ACK[LIST] sent 172.16.124.63 pktsize 380
11/16/12 2:04:50.931 PM bootpd[6791]: BSDP INFORM [en1] 1,a8:20:66:31:ad:e0 NetBoot006 arch=i386 sysid=Macmini6,1
11/16/12 2:04:50.932 PM bootpd[6791]: NetBoot: [1,a8:20:66:31:ad:e0] BSDP ACK[SELECT] sent 172.16.124.63 pktsize 388
11/16/12 2:17:33.919 PM netbiosd[148]: name servers down?
11/16/12 2:20:58.585 PM netbiosd[148]: name servers down?
11/16/12 2:34:09.562 PM netbiosd[148]: name servers down?
11/16/12 2:39:03.753 PM netbiosd[148]: name servers down?

I'm seeing the same behavior with a new Late 2012 Macmini6,2 (2.3GHz quadcore i7).
I have a lab with several variants of minis up through the last generation. One of those minis is a NetBoot/DeployStudio server. I have it hosting a 10.8.2 NetBoot image, which works for all of the other lab minis but this new one.
I have tried 3 different methods for NetBoot:
Holding the 'N' key at boot
Holding option and seeing my NetBoot disk in the selectable options
Booting into the restore partition and selecting my NetBook disk from the Startup Disk preference pane
All 3 options result in what is described above - the Ghostbusters (minus the ghost) no entry sign. My particular mini then shuts itself down shortly thereafter.
My NetBoot server log looks similar to the above, where my BSD INFORM messages have sysid=Macmini6,2.
I have confirmed that - on the restore partition at least - the shipping OS on the new mini 6,2 is 10.8.1. It's likely a custom edition for this new hardware. It's possible that a component of a 10.8.3 update would fix it, but I'm unfortunately leaning toward this being an EFI firmware issue. I've noted on another site that these minis seem to have issues with VMware's ESXi, where the suggested course of action will be an Apple firmware update: http://communities.vmware.com/thread/423099
As the lab is hoping to purchase 40 of these systems, NetBoot support is rather critical.

Using iPhoto to make books with NetBoot on an apple server in computer la

I teach an artist book course at NKU. We have an intel imac lab that serves up the software over a NetBoot system on the network from an xServe. We are using iPhoto to make our books. Our problem is that students cannot save their books to work on for more than one class period because they cannot write back to the server and each time the computer restarts, a pristine set of software is loaded onto each computer. I discovered there is no way to save a book. We can drag the library off and save it but we cannot do that with the book which makes is virtually impossible for my students to do their assignment. In iMovie, you can save your project onto an external drive. With Keynote, you can save your project onto an external drive, but with iPhoto, you cannot save your book onto an external drive to complete as time permits. Do you have any help for me? Barbara Houghton, Professor of Art, Northern Kentucky University [email protected]
iMac Intel Mac OS X (10.4.8) netBoot serves programs onto lab computers over the network

Barbara:
Welcome to the Apple Discussions. What if the student has a USB flash drive with his library folder on it. Could he run that library with the iPhoto application that's on the server? Each student would have to import the photos from the main library to his flash library and run it from there. To get iPhoto to switch libraries you launch it with the Option key depressed and, when asked, navigate to the library you want to use and select it. As long as the libraries don't have many, many photos a 1 or 2 G flash drive would work. If a student had their own portable FW or USB hard drive they could use that also. Unfortunately that involves additional hardware. Might not be that big an issue for today's students as they are much more technologically advanced that we are in so many ways.
Not familiar with servers that's the only way I can think of for each student to have their own library, pictures and keep it for him/herself. Good luck.
Do you Twango?

Dual Netboot Server

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