Re: v-slow raid resync

This isn't going to be an issue with sata vs whatever (though I do 
suggest running in ahci mode if thats an option)

The issue is probably going to be how mdadm is growing the array, it 
will need to do a buttload of disk access to do that reading and writing 
every sector on every disk and trying to keep everything in a consistent 
state while doing so.

I don't know if it applies to whatever raid level you are using but is 
there something like an --assume-clean option you can pass it?
I'd also suggest asking in the mdadm list or perhaps IRC.
http://forums.whirlpool.net.au/archive/1056831 might be of interest.

On 18/03/14 20:02, Rachel Polanskis wrote:
> On 18 Mar 2014, at 6:46 pm, Jeff Allison <[email protected]> wrote:
>
> That's installed unfortunately didn't fix my problem. How badly configured does a disk need to be to only run at 4mb
>
>
>
> Sorry for the suck eggs question, but you did enable all the features in the BIOS e.g. turning on SATA II 3gbps support,
> write cache disable etc?   In the URL link to the forum below they discuss all the optimum settings.  I am using
> WD RED NAS drives (2x2tb) and Seagate 3Tb drives (latest model) in my system so similar to yours….
>
> rachel
>
>
>
> On 18/03/2014 3:43 PM, "Rachel Polanskis" <[email protected]> wrote:
> On 18 Mar 2014, at 3:14 pm, Jeff Allison <[email protected]> wrote:
>
> Is it the O41072911.ROM?
>
> Did you use flashrom of the dos disk thingo.
>
> On 18 March 2014 14:06, gr0ve <[email protected]> wrote:
>> Seriously, you should flash the BIOS!  I get 80mbps reads on ZFS
>> and depending, 30-40mbps on writes.  Without the BIOS mod, you
>> are getting only IDE speeds there.  The original BIOS holds this machine
>> back and it is perfectly safe.  The BIOS ensures AHCI support is operational
>> as well as the 3gbps SATA II bus. Once you see the improvement, you
>> can choose to also select write cache enabled|disabled although
>> this is best with a UPS ;)
>>
>>
>> rachel
> Hi,
> The HP BIOS version is the O41072911.ROM as you suggest.
> You need this to install the “theBay” ROM as well.
>
> The process is shown online, but in short you copy the HP BIOS using a
> DOS/windows installer to a USB stick then copy the “theBay” rom image over the
> top. You could try to “dd” the image but it does some weird trickery to make
> the stick bootable for installing the BIOS.
>
> You can look for TheBay_Microserver_Bios_041.rar online.
> The source information is:
>
> http://www.avforums.com/threads/hp-n36l-n40l-n54l-microserver-updated-ahci-bios-support.1521657/
>
> And it has all the guff on getting the BIOS onto your N54L and also tips on how to configure it.
> I have all the files if you need them….
>
> Once again, these are terrific little servers.  It has an internal USB port so I just loaded FreeNAS
> onto an 8Gb USB stick and boot from there.  All the internal SATA disks are in ZFS disk pools which
> do my bidding. As I use ZFS, I went with 8gb ECC memory. I also added an additional Gigabit Ethernet adaptor as the built in broadcom is general networking and I run the second Gig-E port with Jumbo Frames using a gigabit crossover (there is such a thing)
> to a Mac Mini with the thunderbolt port running Gig-E and doing iSCSI!  The Mac Mini runs esxi 5.5 and
> all the data stores (running various species of Linux) hosted off the HP-N54L.  It is like a little tiny
> SAN, small but perfectly formed….
>
>
> rachel
>
> —
> Rachel Polanskis                 Kingswood, Greater Western Sydney, Australia
> [email protected]             IT consulting, security, programming
>          The more an answer costs, the more respect it carries.
>
>
>
>
>
>
> —
> Rachel Polanskis                 Kingswood, Greater Western Sydney, Australia
> [email protected]		 IT consulting, security, programming
> 	The more an answer costs, the more respect it carries.
>
>
>

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