DFBSDv3.0.1 to RAID10 array (formerly Reqest for Suggestion, Ask Slashdot style)

[Zenny]

Haven't heard from anyone here about my questions I asked before (quoted below).

However, as Matt once suggested in this mailing list, I created RAID10
with SiL SATA RAID CARD. When I tried to install DFBSD3.0.1, the
installer asks me whether to install da8 and da9 hdd available, now I
am a bit confused RAID10 isn't like JBOD which will calculate the
total 8TB of HDD space in four 2TB each as 4TB (half of the total
capacity)?

Or did I miss something? How do you guys install DFBSD to a RAID10? Thanks!

On 2/23/12, Zenny <garbytrash at gmail.com> wrote:
> v3.0.1 changelog is very intriguing!
>
> I am trying to test v3.0.1 by installing to a CF with four advanced
> format HDDs (of same size, 2TB each)
>
> What I am planning is:
>
> 1) Install either the 64bit iso/img to a CF from a development machine
> with msyslog/rsyslog
> 2) Boot from CF onto a machine with 4HDDs (4k sectored) and
> 3) Migrate the Data and config slices to the 4HDDs
>
> I have a few questions before doing that:
>
> 1) What kind of tweaks are needed for 4k sector HDDs for HAMMER? Do I
> need to tweak like for ZFS?
>
> 2) What are the partitions/slices that can be mounted on the 4HDDs
> without affecting the boot process of DFBSD?
>
> 3) What RAID-level (for hardware RAID) is recommended for 4 HDDs
> RAID10 or RAID5? Which would be faster in case of HAMMER?
>
> 4) How can I sync the configuration changes between PFS of HDD and CF?
> Is there something like ramlog (linux)?
>
> Thanks! Your hints would be much appreciated!
>