Re: Remote NAS

[adfas asd <chimera_god@yahoo.com>]

No one has any idea on my questions?


--- On Wed, 9/16/09, adfas asd <chimera_god@yahoo.com> wrote:

> From: adfas asd <chimera_god@yahoo.com>
> Subject: Remote NAS
> To: linux-raid@vger.kernel.org
> Date: Wednesday, September 16, 2009, 9:21 AM
> A couple questions about MD RAID10:
> 
> Right now I'm RAIDing two 2TB drives in RAID10offset2. Need
> to add some drives and maybe I'll remote them using NAS (GB
> ethernet), for fire and theft protection.
>  
> So could the BIOS actually boot this if 2 drives are in the
> machine and 2 are in the garage? Is there a way to specify
> in mdadm that the two in the garage are mirrored from the
> two in the system?
> 
> Is GB ethernet NAS noticably slower than eSATA?  Is it
> reliable?
>  
> What if I use the mobo's e-SATA port to add 5 external
> drives locally. This would require a port multiplier. I
> presume it would not be bootable, since a port multiplier
> needs OS support? Or would something go in initrd.img? 
> Or would I need an individual boot drive to get things up?
>  
> Using the array to store MythTV recordings (very large
> files), but when it does commercial flagging (lots of
> writes) the array is so busy that GUI response is very
> slow.  I've set readahead cache to optimal (4096, after
> testing most sizes), so read should be OK.  I know far
> is optimized for read, so I chose offset in hopes it would
> bring up write speed.  Is there a way to speed up
> writes?
> 
> 
> 
>       
>