CentOS - Oct 2016 - Disk near failure

John R Pierce wrote:
> On 10/21/2016 2:03 AM, Alessandro Baggi wrote:
>>
>> My ssds are failing?
>
> SSD's wear out based on writes per block.   they distribute those
> writes, but once each block has been written X number of times, they are
> no longer reliable.
>
> they appear to still be working perfectly, but they are beyond their
> design life.   soon or later, if you continue the amount of writes
> you've been doing, you'll get back errors or bad data.
>
> I would plan on replacing those drives sooner rather than later.   5
> years was a good run.
1. Especially if they're consumer grade.
2. And that's a fairly early large (for SSD) drive.
3. We've got a RAID appliance that takes actual SCSI that's still
running,
though we're now in the process of replacing these 10 yr old RAIDs....
4. SATA is a *lot* cheaper for *much* larger capacity drives...

      mark

Il 21/10/2016 17:20, m.roth at 5-cent.us ha scritto:
> John R Pierce wrote:
>> On 10/21/2016 2:03 AM, Alessandro Baggi wrote:
>>>
>>> My ssds are failing?
>>
>> SSD's wear out based on writes per block.   they distribute those
>> writes, but once each block has been written X number of times, they
are
>> no longer reliable.
>>
>> they appear to still be working perfectly, but they are beyond their
>> design life.   soon or later, if you continue the amount of writes
>> you've been doing, you'll get back errors or bad data.
>>
>> I would plan on replacing those drives sooner rather than later.   5
>> years was a good run.
>
> 1. Especially if they're consumer grade.
> 2. And that's a fairly early large (for SSD) drive.
> 3. We've got a RAID appliance that takes actual SCSI that's still
running,
> though we're now in the process of replacing these 10 yr old RAIDs....
> 4. SATA is a *lot* cheaper for *much* larger capacity drives...
>
>       mark
>
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>
Hey there,
I've runned smartctl -l xerror/error /dev/sda but I get:

smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.0-327.36.2.el7.x86_64] 
(local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ==SMART Error Log not supported


I've noticed this also with smartctl -a /dev/sda

Hi,

On Mon, 2016-10-24 at 12:07 +0200, Alessandro Baggi
wrote:
> === START OF READ SMART DATA SECTION ==> SMART Error Log not supported
I reckon there's a <snip> between those lines. The line right after
the
first should read something like:

SMART overall-health self-assessment test result: PASSED

or "FAILED" for that matter. If not try running

smartctl -t short /dev/sda

, wait for the indicated time to expire, then check the output of
smartctl -a (or -x) again.

Regards,
Leonard.

-- 
mount -t life -o ro /dev/dna /genetic/research