K8N Neo4 has two SATA RAID chips - Nvidia nForce 4 based and Sil3114. Initially both onboard controllers were working fine - each got an array, and I was running backups off Nvidia controller and all was working nicely.
Then after upgrading disk size I found that Sil3114 started to have troubles, possibly not being able to handle well drives larger than 300 Gb, while Nvidia seemed to be working OK. So I put both arrays on Nvidia and tried running backups from Sil. However under load, like when running backup, drives happened to disappear and/or develop problems. I ended up with about 5-6 harddrives with different failures, bad sectors etc, that I started to blame on Sil chip (and only partial backups) Then I went out and got RocketRAID 2300 (I only later understood that K8N Neo4 is not on the Highpoint's short list of about 20 compatible mobos :-)
Bios level:
RocketRAID Bios - 230xPM Bios Setting Utility 2.5
K8N Neo4 Platinum mobo - AWARD BIOS 6.00PG, V1.D 052206
I have double problem with my setup:
1) if I hook any drives to RocketRAID that make a valid array, RocketRAID becomes the only device I can boot from. That is - if nothing is attached to RocketRAID, in motherboard Bios I see 3 options for "Harddrive boot order":
1. SCSI-0 Nvidia Mirror xxx
2. SCSI-1 Nvidia Mirror yyy
3. Bootable addin cards
However if I get one or several arrays attached to RocketRAID I get:
1. SCSI-0 RocketRAID 230x SATA Contro
2. Bootable addin cards
so Nivdia arrays have been simply replaced by RocketRAID !?
ok, I will boot from RocketRAID... but...
2) if I have 2 arrays attached to RocketRAID I have trouble indicating which one to launch from. Theoretically in RocketRAID bios utility there is a menu selection - select array to boot from. However whatever I try, if I have 2 arrays - one with OS and other with data, it seems always launching from the wrong one. I get the message: DISK BOOT FAILURE... Unless I leave only one array with OS - then it launches OS from it without a problem.
So about the only way I can use RocketRAID 2300 on my system is A) to have a single bootable drive/array on it and/or B) hotplug any additional arrays once the system is up. Needless to say very inconvenient. And I paid money for it... Well as I bought it mostly to replace Sil3114 for backups it seems nearly to be fine - just plug in a drive when making a backup, but still - it seems to have better control software than both on-board controllers and I'd rather like to use it as the principal controller and run backups from Nvidia.
And well, when running backup for 8 hours, in the end both attached disks and then also RocketRAID controller device itself disappeared, and later showed up again only after I did switch off the power switch for a minute. But if it promises to behave otherwise, I promise not to run any 8h backups on it anymore :-)
I hope somebody have an idea how to make them both play together.