Re: Port Multiplier access with Sil 3124

[Jeff Garzik <jeff@garzik.org>]

Linda Walsh wrote:
> Jeff Garzik wrote:
>> Greg Freemyer wrote:
>>
>>> I'm hearing of people saying a 2 disk mirror (raid-1) is not safe
>>> enough.  Go with either a 3 disk mirror or to raid-6.  Even with
>>> raid-6 I personally would not let it have too many spindles. (Whatever
>>> too many means?)
>>
>> IMO, RAID-1 was never safe.  With RAID-1, one must rely solely on 
>> "knowing" which RAID component is bad.  With a completely dead drive, 
>> this is obvious; with slowly creeping bad sectors, far less obvious.
> ---
>     I had a similar thought -- how would I know if the
> 2-disks are actually "in sync"?
> 
>     I'm  guessing I could physically remove each and try to access
> them as single-drives and they should be the same, but I don't know that
> the RAID-1 format will store the data on each drive to exactly look
> like a single mounted disk.  I can't think of how else they might
> do it, or why, but I just haven't physically verified that I an
> pull either HD and access it as a solo-hard disk.  (I'd hope so...but
> until I've actually tried it with the hardware in question...)
> 
>     But all of this is really depressing me.  Just throw up my hands
> and give up on computer storage?

Find a solution that has both replication and checksumming :)

Trust no component!  :)

	Jeff