From mboxrd@z Thu Jan 1 00:00:00 1970 From: adfas asd Subject: Re: Remote NAS Date: Tue, 22 Sep 2009 12:38:37 -0700 (PDT) Message-ID: <484423.6825.qm@web38807.mail.mud.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids No one has any idea on my questions? --- On Wed, 9/16/09, adfas asd wrote: > From: adfas asd > 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? > > > > >