Peter Rabbitson wrote:
> Is the behavior you are describing above [decaying STR]
> manufacturer dependent or it is pretty much dictated by the general
> design of modern drives?
It's an artifact of the physical layout of the disk. Disks are divided into
tracks (concentric circles laid out across
Neil,
With the check feature of the recent md feature, the question popped
up what happens when an inconsistency is found. Does it fix it? If
so, which disk it assumes to be wrong if an inconsistency is found?
Cheers,
--
martin; (greetings from the heart of the sun.)
\ echo m
Chris Wedgwood wrote:
>
>
> Also, 'dd performance' varies between the start of a disk and the end.
> Typically you get better performance at the start of the disk so dd
> might not be a very good benchmark here.
>
Hi,
Sorry for hijacking this thread, but I was actually planning to ask this
very
On Sat, 5 May 2007, Emmanuel Florac wrote:
Le Sat, 5 May 2007 12:33:49 -0400 (EDT) vous écriviez:
However, if I want to upgrade to more than 12 disks, I am out of
PCI-e slots, so I was wondering, does anyone on this list run a 16
port Areca or 3ware card and use it for JBOD?
I don't use th
Le Sat, 5 May 2007 12:33:49 -0400 (EDT) vous écriviez:
> However, if I want to upgrade to more than 12 disks, I am out of
> PCI-e slots, so I was wondering, does anyone on this list run a 16
> port Areca or 3ware card and use it for JBOD?
I don't use this setup in production, but I tried it with
On Sat, May 05, 2007 at 12:33:49PM -0400, Justin Piszcz wrote:
> Also, when I run simultaenous dd's from all of the drives, I see
> 850-860MB/s, I am curious if there is some kind of limitation with
> software raid as to why I am not getting better than 500MB/s for
> sequential write speed?
What
Justin Piszcz wrote:
> However, if I want to upgrade to more than 12 disks, I am out of PCI-e
> slots, so I was wondering, does anyone on this list run a 16 port
> Areca or 3ware card and use it for JBOD? What kind of performance do
> you see when using mdadm with such a card? Or if anyone uses m
Justin Piszcz wrote:
Question,
I currently have a 965 chipset-based motherboard, use 4 port onboard
and several PCI-e x1 controller cards for a raid 5 of 10 raptor
drives. I get pretty decent speeds:
[EMAIL PROTECTED] time dd if=/dev/zero of=100gb bs=1M count=102400
102400+0 records in
1024
Question,
I currently have a 965 chipset-based motherboard, use 4 port onboard and
several PCI-e x1 controller cards for a raid 5 of 10 raptor drives. I get
pretty decent speeds:
[EMAIL PROTECTED] time dd if=/dev/zero of=100gb bs=1M count=102400
102400+0 records in
102400+0 records out
10737
