What are you doing for home NAS?

[Mark Komarinski]

On 12/31/2013 2:52 PM, Ben Scott wrote:
> On Mon, Dec 30, 2013 at 2:16 PM, Michael Bilow
> <mikebw at colossus.bilow.com> wrote:
>> This allows the RAID manager (whether
>> hardware or software) to handle the error appropriately, usually by
>> computing what the sector should contain and writing it, thereby
>> causing a reallocation of the failed sector from a reserve of
>> spares.
>    In my experience, the RAID managers I've dealt with (Linux, AMI/LSI,
> QNAP, Intel, Adaptec) respond to that single bad block by failing the
> member disk, and requiring a rebuild of the entire member.  :-p
>
>    I haven't had any server disk failures for at least a few years
> (knock on wood); maybe things have gotten better in that time.
>

Drives can do the remapping internally - there's extra space if there's 
a read error to move the sector elsewhere.  When the number of remapped 
sectors gets too high, it's used by some vendors to indicate it's in a 
pre-fail state.  SMART can also track that.

ZFS seems to handle a bad sector by blocking it from the drive and 
recreating it via parity/mirroring if possible.

Anyway, I ordered the HP N54L, 8GB of RAM, and two 4TB drives.  This 
leaves me with two expansion bays and the ability to use FreeNAS with 
ZFS.  I looked at OMV but it seems to not be as mature as FreeNAS.  If 
anyone's interested I can do another post once it's built and in use.

-Mark