Bacula-users

[Bacula-users] Tape errors: how many is considered normal?

2017-06-03 18:38:24
Subject: [Bacula-users] Tape errors: how many is considered normal?
From: Ivan Adzhubey <iadzhubey AT rics.bwh.harvard DOT edu>
To: <bacula-users AT lists.sourceforge DOT net>
Date: Sat, 3 Jun 2017 18:37:22 -0400
Hi,

Below is the SMART TapeAlert output I received after running btape 'test' and 
'speed' tests on a new IBM ULTRIUM-HH5 LTO-5 drive using brand new Fujifilm 
tape. Is it normal to see 40 (corrected) errors per few GBs of data that the 
tests have written to tape?

$ smartctl -H -l error /dev/sgtape1
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-78-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF READ SMART DATA SECTION ===
TapeAlert: OK
Error counter log:
           Errors Corrected by           Total   Correction     Gigabytes    
Total
               ECC          rereads/    errors   algorithm      processed    
uncorrected
           fast | delayed   rewrites  corrected  invocations   [10^9 bytes]  
errors
read:          0        0         0         0          0          0.010         
  
0
write:         0        0         0        40         40          0.073         
  
0

Non-medium error count:        0

Thanks,
Ivan

-- 
Ivan Adzhubey, Ph.D.
Instructor
Division of Genetics, Dept of Medicine
Brigham & Women's Hospital
Harvard Medical School
New Research Building, Room 0464C
77 Avenue Louis Pasteur
Boston, MA 02115
tel.: (617) 525-4728
fax:  (617) 525-4705
web: http://genetics.bwh.harvard.edu/wiki/sunyaevlab/


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