Controller for ZFS

[Miroslav Lachman]

Borja Marcos wrote:
>
> On Nov 13, 2013, at 7:41 PM, Shawn Wallbridge wrote:

[...]

> The one I use is sold by Dell as the "H200". They usually try to disuade you by saying that it's not intelligent, doesn't
> offer RAID, some of their "configuration aids" even forbid it... I just tell the salesman to shut up because I know much better than him.
>
> The only problem: beware if you are using a built-in backplane in the server, some manufacturers insist on using different
> cabling schemes for different controllers and you could run into stupid problems because of that.

The second problem is, that you cannot boot RAIDZ[23] from the H200. I 
tried it 2 years ago on Dell server and the problem was that BIOS shows 
only the first drive until the OS is fully booted, so the loader cannot 
boot from RAIDZ.
Workaround: I did a small partition on each drive, created 4 way ZFS 
mirror with base system and another pool for data as RAIDZ.

My controller is identified as:

mps0: <LSI SAS2008> port 0x2000-0x20ff mem 
0xc1240000-0xc124ffff,0xc1200000-0xc123ffff irq 16 at device 0.0 on pci1
mps0: Firmware: 07.15.04.00
mps0: IOCCapabilities: 
185c<ScsiTaskFull,DiagTrace,SnapBuf,EEDP,TransRetry,IR>
mps0: [ITHREAD]

Miroslav Lachman