Cisco Cisco Content Delivery Engine 220 Technical References
2
Seagate Barracuda HHD Replacement
OL-27061-01
Identifying a Drive
Identifying a Drive
Customers have been experiencing a recent increase in SATA disk failure frequency observed in their
live Internet Streamer CDS production network (CDD). These disk failures are specifically related to the
Barracuda HDD model type (Seagate Part Number ST3500320NS).
live Internet Streamer CDS production network (CDD). These disk failures are specifically related to the
Barracuda HDD model type (Seagate Part Number ST3500320NS).
Table 1
shows the different HDD
model types.
The Root Cause Analysis Cisco has received from Seagate indicated degraded heads because of
interactions with thermal asperities that manifest themselves as read errors. Read/write issues caused by
head interactions with buried defects resulted in degraded heads.
interactions with thermal asperities that manifest themselves as read errors. Read/write issues caused by
head interactions with buried defects resulted in degraded heads.
Run the show disk SMART-info to see both Model and Firmware Versions:
ServiceEngine# show disk SMART-info
=== disk00 ===
smartctl version 5.38 [i686-spcdn-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: ST3500320NS
Serial Number: 9QMCJGAT
Firmware Version: SN06
User Capacity: 500,107,862,016 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Mon Aug 22 04:04:04 2011 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== disk01 ===
smartctl version 5.38 [i686-spcdn-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===
Device Model: ST3500320NS
Serial Number: 9QMCJKNQ
Firmware Version: SN06
User Capacity: 500,107,862,016 bytes
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Mon Aug 22 04:04:04 2011 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== disk02 ===
smartctl version 5.38 [i686-spcdn-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
Table 1
HDD Motel Types
Manufacture
Part Number
Product Name
Cisco Part
Number
Number
Firmware
Version
Version
Approximate
Introduction
Introduction
Status
Seagate
ST3500320NS
Barracuda
74-5720-01
SN06
2010
EOL
Seagate
ST3500514NS
Constellation
74-5720-02
SN11
2011
EOL
Seagate
ST500NM0011
Constellation
74-5720-03
SN33
2012
Available
Western Digital
WD5003ABYX
RE4
74-5720-03
1S02
2012
Available