On Tuesday, October 18, 2011 01:07:02 PM Les Mikesell wrote:
I don't think anything is immune to failure. Another fun case is a
randomly-bad memory bit causing different things to be written to
software raid mirrors. I had one that took 3+ days of running
memtest86 to catch.
ECC RAM?
On Wed, Oct 19, 2011 at 2:33 PM, Lamar Owen lo...@pari.edu wrote:
On Tuesday, October 18, 2011 01:07:02 PM Les Mikesell wrote:
I don't think anything is immune to failure. Another fun case is a
randomly-bad memory bit causing different things to be written to
software raid mirrors. I had one
Hi Michael,
On Fri, Oct 14, 2011 at 5:35 PM, Michael Schumacher wrote:
On Tuesday, October 11, 2011 you wrote:
I would appreciate clarification on the following:
(a) Indicate disk failure. LED lights up and/or audio alarm?
(b) The failed HDD can be swapped.
Don't rely on the LED going
On 10/11/2011 03:29 PM, Arun Khan wrote:
Are the hot swap bays compatible with Linux mdadm RAID? i.e. Upon
detection of disk failure, the respective HDD LED on the bay can be
turned ON?
no, not all are. Only a few work with mdadm ( or rather in a way that
mdadm can work with them, even the
On 10/18/2011 04:11 PM, Arun Khan wrote:
You mean, it is not OK to pull out a functioning disk? Pulling one
disk out of RAID 5 should be OK. Am I missing something?
grab yourself a bunch of usb keys + a usb hub - fire up mdadm on your
laptop and use those keys as target disks and see how
On Tue, Oct 18, 2011 at 10:11 AM, Arun Khan knu...@gmail.com wrote:
I would appreciate clarification on the following:
(a) Indicate disk failure. LED lights up and/or audio alarm?
(b) The failed HDD can be swapped.
Don't rely on the LED going on. I mark all my hot swap disks with
labels
On Tue, Oct 18, 2011 at 8:57 PM, Les Mikesell lesmikes...@gmail.com wrote:
On Tue, Oct 18, 2011 at 10:11 AM, Arun Khan knu...@gmail.com wrote:
I pulled ONCE the wrong disk out of a Raid5 array. :-(
You know what that means?
You mean, it is not OK to pull out a functioning disk? Pulling one
On Tue, Oct 18, 2011 at 8:52 PM, Karanbir Singh mail-li...@karan.org wrote:
Also, mdraid10 isnt the same as a normal raid-10, unless you meant to
imply that you are doing a raid10 with md-raid tools.
Yes, the plan is to create raid10 with the md tools.
-- Arun Khan
On Tue, Oct 18, 2011 at 8:55 PM, Karanbir Singh mail-li...@karan.org wrote:
On 10/18/2011 04:11 PM, Arun Khan wrote:
You mean, it is not OK to pull out a functioning disk? Pulling one
disk out of RAID 5 should be OK. Am I missing something?
grab yourself a bunch of usb keys + a usb hub -
On Tue, Oct 18, 2011 at 11:05 AM, Arun Khan knu...@gmail.com wrote:
btw, dont think that these issues dont affect hardware raid - they do.
its just that the management for these things is slightly more
abstracted away and the controllers are better integrated with the disk
cages.
About 10
Dear Arun,
On Tuesday, October 11, 2011 you wrote:
I would appreciate clarification on the following:
(a) Indicate disk failure. LED lights up and/or audio alarm?
(b) The failed HDD can be swapped.
Don't rely on the LED going on. I mark all my hot swap disks with
labels with their serial
I have no personal experience with rack mount chassis.
From the past postings, I reckon there are members, in this list, who
have experience in rack mount setups and would like get their advice.
To reduce the H/W cost, I am considering Linux mdadm RAID10 on a 2U chassis.
I would appreciate
On 10/11/11 12:11 AM, Arun Khan wrote:
In rack mount chassis, do the cages that house the
hard disks have the following feature?
(a) Indicate disk failure. LED lights up and/or audio alarm?
that requires specific configuration to suit whatever drive interconnect
you have.
(b) The failed
John R Pierce wrote:
On 10/11/11 12:11 AM, Arun Khan wrote:
In rack mount chassis, do the cages that house the
hard disks have the following feature?
(a) Indicate disk failure. LED lights up and/or audio alarm?
that requires specific configuration to suit whatever drive interconnect
you
On Tue, Oct 11, 2011 at 12:46 PM, John R Pierce pie...@hogranch.com wrote:
On 10/11/11 12:11 AM, Arun Khan wrote:
In rack mount chassis, do the cages that house the
hard disks have the following feature?
(a) Indicate disk failure. LED lights up and/or audio alarm?
that requires specific
On Tue, Oct 11, 2011 at 6:36 PM, m.r...@5-cent.us wrote:
John R Pierce wrote:
On 10/11/11 12:11 AM, Arun Khan wrote:
In rack mount chassis, do the cages that house the
hard disks have the following feature?
(a) Indicate disk failure. LED lights up and/or audio alarm?
that requires
Arun Khan wrote:
On Tue, Oct 11, 2011 at 12:46 PM, John R Pierce pie...@hogranch.com
wrote:
On 10/11/11 12:11 AM, Arun Khan wrote:
In rack mount chassis, do the cages that house the
hard disks have the following feature?
snip
Does these bays have a connector (+ cable) that is connected to
On 10/11/11 7:29 AM, Arun Khan wrote:
that requires specific configuration to suit whatever drive interconnect
you have.
Does these bays have a connector (+ cable) that is connected to the
motherboard or RAID card to control the HDD LEDs in the bay?
(sorry if this appears basic but I have
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