User manual
SANtools® S.M.A.R.T. Disk Monitor (SMARTMon-UX)72
SANTOOLS® is registered in US Patent and Trademark Office No 3,107,854 All rights reserved.
Read compression ratio (percentage - reset on cartridge change): 0
Percentage of data with compression between .89 and 1.2 - reset on cartridge change: 0
Percentage of data with compression between 1.2 and 1.6 - reset on cartridge change: 28
Percentage of data with compression between 1.6 and 2.2 - reset on cartridge change: 71
Percentage of data with compression between 2.2 and 3.6 - reset on cartridge change: 0
Percentage of data with compression greater than 3.6 - reset on cartridge change: 0
Buffer under-runs: 22
Buffer over-runs: 1
Write errors corrected with possible delays: 155808
Total Write errors: 345
Write errors corrected: 345
Times correction algorithm processed (on Writes): 0
Bytes processed (on Writes): 295436288
Unrecovered errors (on Writes): 0
Read errors corrected with possible delays: 0
Total Read errors: 1
Read errors corrected: 1
Times correction algorithm processed (on Reads): 1
Bytes processed (on Reads): 7602176
Unrecovered errors (on Reads): 0
Program Ended.
The log pages provide a great deal of insight when dealing with tape and autochangers. Consider how valuable the
highlighted fields are when dealing with software vs. hardware compression; data integrity; tape rotation; and so on.
The buffer under-runs tells us that that tape drive couldn't keep up with the data stream, and buffer under-runs tells us
how many times the host couldn't keep up with the tape.
1.22 SMART Threshold and Attribute Viewer
Threshold and attributes are only applicable for IDE disk drives (which includes SATA disks).
SCSI and Fibre Channel drives provide additional statistical information which may be viewed by examining the log
pages .
With version 1.28, we added additional information to the -S output. Previously we would report something like:
SMARTMon-ux [Release 1.23, Build 07-DEC-2003] - Copyright 2003 SANtools, Inc. http://www.SANtools.com
Discovered Maxtor 6Y080M0 S/N "Y3JRAGXE" on /dev/hda (SMART Enabled)
S.M.A.R.T. Attributes and Thresholds (Note - Alert made if Current BELOW threshold):
Attribute# and Description Flags Current Worst Threshold
(3) Spin Up Time: 0x0027 205 205 63
(4) Start/Stop Count: 0x0032 253 253 0
(5) Reallocated Sector Count: 0x0033 253 253 63
(6) Read Channel Margin 0x0001 253 253 100
(7) Seek Error Rate: 0x000a 253 252 0
(8) Seek Time Performance: 0x0027 253 251 187
(9) Power On Hours Count: 0x0032 253 253 0
(10) Spin Retry Count: 0x002b 253 252 157
(11) Calibration Retry Count: 0x002b 253 252 223
(12) Power Cycles: 0x0032 253 253 0
(192) Emergency Retract Cycles: 0x0032 253 253 0
(193) Load/Unload Cycles: 0x0032 253 253 0
(194) HDD Temperature: 0x0032 253 253 0
(195) On The Fly Error Rate: 0x000a 253 252 0
(196) Offline Reallocation Events: 0x0008 253 253 0
(197) Probational Sector Count: 0x0008 253 253 0
(198) Scan Uncorrectable Sectors: 0x0008 253 253 0
(199) CRC Errors: 0x0008 199 199 0
(200) Write Preamp Errors: 0x000a 253 252 0
(201) Off Track Errors: 0x000a 253 252 0
(202) DAM Error Rate: 0x000a 253 252 0
(203) ECC Errors: 0x000b 253 252 180
(204) Raw Read Error Rate: 0x000a 253 252 0
(205) Thermal Asperity Rate: 0x000a 253 252 0
(207) Spin High Current: 0x002a 253 252 0
(208) Spin Buzz: 0x002a 253 252 0
(209) Off Line Seek Performance: 0x0024 198 198 0
( 99) Unknown (vendor-specific) Attribute: 0x0004 253 253 0
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