Re: MDADM RAID1 of external USB 3.0 Drives

2014-10-08 Thread Linux-Fan
On 10/07/2014 11:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/30/2014 01:40 AM, lee wrote: [...] Last time I looked into buying an USB stick, I found out that I'd be better off buying an USB disk because the sticks were so expensive and their capacity relatively low, so I

Re: MDADM RAID1 of external USB 3.0 Drives

2014-10-08 Thread lee
Linux-Fan ma_sys...@web.de writes: On 10/07/2014 11:41 PM, lee wrote: Transferring data via network is also my favorite means of transportation. On the other hand, my connection has an upload speed of about 70 KiB/sec and is therefore not suited for transferring medium amounts of data like

Re: MDADM RAID1 of external USB 3.0 Drives

2014-10-07 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/30/2014 01:40 AM, lee wrote: [...] I think I figured it out: The USB stuff was actually going to sleep and remained unresponsive once it fell asleep, until a reboot. I used powertop to disable the power management for USB and didn't have any

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-30 Thread Linux-Fan
On 09/30/2014 01:40 AM, lee wrote: [...] I think I figured it out: The USB stuff was actually going to sleep and remained unresponsive once it fell asleep, until a reboot. I used powertop to disable the power management for USB and didn't have any further issues since. It might be

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-29 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/29/2014 12:56 AM, lee wrote: I cannot tell much about the reliability of SMART data in general but should I see a lot of bad values suddenly appearing I would immediately perform some additional backups and check the data more closely, listen to the

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-28 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/27/2014 09:52 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/22/2014 03:23 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: I've

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-28 Thread Linux-Fan
On 09/29/2014 12:56 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/27/2014 09:52 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/22/2014 03:23 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: I always at least try to read/interpret the SMART data. I consider it valuable

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-27 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/22/2014 03:23 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: I've seen the smart info show incredible numbers for the hours and for the

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-27 Thread Linux-Fan
On 09/27/2014 09:52 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/22/2014 03:23 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: I've seen the smart info show incredible

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-22 Thread Linux-Fan
On 09/22/2014 03:23 AM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: Other than that, in my experience Seagate disks my have an unusually high failure rate. Mine all work here. SMART

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread Andrew M.A. Cater
On Sun, Sep 21, 2014 at 03:51:54AM +0200, lee wrote: Andrew McGlashan andrew.mcglas...@affinityvision.com.au writes: Whilst it is usually quite easy to find older server class hardware at bargain prices (compared to new), it is often the case that older hardware is slower and much less

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread Linux-Fan
On 09/20/2014 04:55 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/14/2014 04:33 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: or even buy some additional drives (I know that it is often said that today drives are cheap but for me being comparatively new to computing, 60€ are

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread lee
Andrew M.A. Cater amaca...@galactic.demon.co.uk writes: On Sun, Sep 21, 2014 at 03:51:54AM +0200, lee wrote: Andrew McGlashan andrew.mcglas...@affinityvision.com.au writes: Whilst it is usually quite easy to find older server class hardware at bargain prices (compared to new), it is often

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: Other than that, in my experience Seagate disks my have an unusually high failure rate. Mine all work here. SMART reports They'll work until they fail. I don't believe in the smart-info. The unreliability has just

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread Linux-Fan
On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: Other than that, in my experience Seagate disks my have an unusually high failure rate. Mine all work here. SMART reports They'll work until they fail. I don't believe in the

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-21 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/21/2014 08:41 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/20/2014 04:55 PM, lee wrote: Other than that, in my experience Seagate disks my have an unusually high failure rate. Mine all work here. SMART reports They'll work until they

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/14/2014 04:33 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/14/2014 12:38 PM, Andrew M.A. Cater wrote: or even buy some additional drives (I know that it is often said that today drives are cheap but for me being comparatively new to

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/14/2014 04:35 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: Also, the reliability of the external storage is required to be perfect Then forget USB disks. Get an HP Microserver and reliable disks. Sorry, forgot to insert a not :). It

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread Cindy-Sue Causey
On 9/20/14, lee l...@yun.yagibdah.de wrote: What's the point of creating and attaching to your computer an unreliable storage system which continues to give you trouble because it's unreliable? *100% ditto* This is coming from someone operating at an extremely low income level: Buy the more

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread Andrew McGlashan
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 Hi, I'm going to address a number of things here First off, I used to use this script [1], with an entry in /etc/rc.local to kick it off on boot. My goal was to start the RAID1 array only if 2 members could be found (minimum), I added a 3rd

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread Andrew McGlashan
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 21/09/2014 4:00 AM, Andrew McGlashan wrote: First off, I used to use this script [1], with an entry in /etc/rc.local to kick it off on boot. My goal was to start the RAID1 array only if 2 members could be found (minimum), I added a 3rd

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread lee
Cindy-Sue Causey butterflyby...@gmail.com writes: After going through this several times lately, I think of it this way: $25 for a cheap part when better quality is $50. That cheap part WILL break and usually very soon. $25 DOWN THE DRAIN, boom, just like that when that same $25 could have

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-20 Thread lee
Andrew McGlashan andrew.mcglas...@affinityvision.com.au writes: Whilst it is usually quite easy to find older server class hardware at bargain prices (compared to new), it is often the case that older hardware is slower and much less power efficient to newer hardware and the pricing on lots

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Andrew M.A. Cater
On Sat, Sep 13, 2014 at 08:06:59PM -0400, Dan Ritter wrote: On Thu, Sep 11, 2014 at 06:17:00PM +0200, Linux-Fan wrote: some time ago, I bought two external Seagate 2 TB USB 3.0 HDDs in order to expand my local storage (all internal slots are already in use). Having created a RAID1 with

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
On 09/14/2014 02:06 AM, Dan Ritter wrote: On Thu, Sep 11, 2014 at 06:17:00PM +0200, Linux-Fan wrote: [...] Is there any means to configure MDADM (or such) to make sure that all devices are recognized before attempting to start the array so that I could manually reconnect the missing disk and

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
On 09/14/2014 12:38 PM, Andrew M.A. Cater wrote: On Sat, Sep 13, 2014 at 08:06:59PM -0400, Dan Ritter wrote: [...] It's almost certainly a real problem, and in my experience it is not the disk itself which is bad, but something in the path (the USB port, the USB cable, the USB-SATA

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
On 09/14/2014 01:42 PM, Linux-Fan wrote: On 09/14/2014 02:06 AM, Dan Ritter wrote: [...] In the meantime, you can: - add a bitmap file to the RAID, which will speed up rebuilds. - use the --no-degraded flag, to prevent assembly of a RAID that is lacking a disk. Thank you very much for

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread lee
Linux-Fan ma_sys...@web.de writes: Also, the reliability of the external storage is required to be perfect Then forget USB disks. Get an HP Microserver and reliable disks. -- Knowledge is volatile and fluid. Software is power. -- To UNSUBSCRIBE, email to

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread lee
Linux-Fan ma_sys...@web.de writes: On 09/14/2014 12:38 PM, Andrew M.A. Cater wrote: or even buy some additional drives (I know that it is often said that today drives are cheap but for me being comparatively new to computing, 60€ are still much for a HDD) Where do you get good 2TB+ drives

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Dan Ritter
On Sun, Sep 14, 2014 at 02:30:34PM +0200, Linux-Fan wrote: On 09/14/2014 01:42 PM, Linux-Fan wrote: On 09/14/2014 02:06 AM, Dan Ritter wrote: [...] In the meantime, you can: - add a bitmap file to the RAID, which will speed up rebuilds. - use the --no-degraded flag, to prevent

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
On 09/14/2014 04:35 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: Also, the reliability of the external storage is required to be perfect Then forget USB disks. Get an HP Microserver and reliable disks. Sorry, forgot to insert a not :). It should read the reliability of the external

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Reco
Hi. On Sun, 14 Sep 2014 17:55:46 +0200 Linux-Fan ma_sys...@web.de wrote: Concerning editing the initscript: I am now going to do that but I guess it is going to produce trouble when upgrading to Jessie. No it won't. Installing a new version of mdadm package will produce a different version

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
On 09/14/2014 04:33 PM, lee wrote: Linux-Fan ma_sys...@web.de writes: On 09/14/2014 12:38 PM, Andrew M.A. Cater wrote: or even buy some additional drives (I know that it is often said that today drives are cheap but for me being comparatively new to computing, 60€ are still much for a HDD)

Fwd: Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-14 Thread Linux-Fan
Sorry, this should have been sent to the list in the first place. Original Message Subject: Re: MDADM RAID1 of external USB 3.0 Drives Date: Sun, 14 Sep 2014 18:12:41 +0200 From: Linux-Fan ma_sys...@web.de To: Reco recovery...@gmail.com On 09/14/2014 06:06 PM, Reco wrote: Hi

Re: MDADM RAID1 of external USB 3.0 Drives

2014-09-13 Thread Dan Ritter
On Thu, Sep 11, 2014 at 06:17:00PM +0200, Linux-Fan wrote: some time ago, I bought two external Seagate 2 TB USB 3.0 HDDs in order to expand my local storage (all internal slots are already in use). Having created a RAID1 with MDADM just as normal, it all seemed to work, until at one system

MDADM RAID1 of external USB 3.0 Drives

2014-09-11 Thread Linux-Fan
Dear list members, some time ago, I bought two external Seagate 2 TB USB 3.0 HDDs in order to expand my local storage (all internal slots are already in use). Having created a RAID1 with MDADM just as normal, it all seemed to work, until at one system startup MDADM told me via local mail that the