All MIBs › CPQSCSI-MIB › cpqTapeCountersReReads
cpqTapeCountersReReads
Module: CPQSCSI-MIB
OID (symbolic): CPQSCSI-MIB::cpqTapeCountersReReads
OID (numeric): 1.3.6.1.4.1.232.5.4.2.1.1.6
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: Tape Device Re-read count.
This is the number of times blocks had to be re-read from the device. This value is maintained since the Tape Hardware Interface driver was loaded.
Re-read errors may occasionally occur. If this value should rise dramatically, you may need to clean the device. If you continue to have re-reads, you may have a problem. Some common causes include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives or having more than one device with the same SCSI ID. Insure the bus cable is free of obstructions and that the devices on the bus are properly configured.
What is cpqTapeCountersReReads?
This counter tracks how many times blocks had to be re-read from the tape device, maintained since the Tape Hardware Interface driver was loaded. As with re-writes, a rising count first suggests a cleaning is needed, with persistent re-reads after cleaning indicating a real problem such as RFI or bad cabling. For example, a tape drive whose reReads keeps climbing even after a cleaning cycle would warrant checking cable and termination quality.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.232.5.4.2.1.1.6 snmpwalk -v2c -c public <target> CPQSCSI-MIB::cpqTapeCountersReReads
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.232.5.4.2.1.1.6.1 snmpget -v2c -c public <target> CPQSCSI-MIB::cpqTapeCountersReReads.1
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OID Breakdown
Upper-level ancestors (7 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.232 | compaq | COMPAQ-ID-REC-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.232.5 | cpqScsi | CPQSCSI-MIB |
| 1.3.6.1.4.1.232.5.4 | cpqTapeComponent | CPQSCSI-MIB |
| 1.3.6.1.4.1.232.5.4.2 | cpqTapeCounters | CPQSCSI-MIB |
| 1.3.6.1.4.1.232.5.4.2.1 | cpqTapeCountersTable | CPQSCSI-MIB |
| 1.3.6.1.4.1.232.5.4.2.1.1 | cpqTapeCountersEntry | CPQSCSI-MIB |
| 1.3.6.1.4.1.232.5.4.2.1.1.6 | cpqTapeCountersReReads | CPQSCSI-MIB |