All MIBs › CPQIDA-MIB › cpqDaTapeCountersReReads
cpqDaTapeCountersReReads
Module: CPQIDA-MIB
OID (symbolic): CPQIDA-MIB::cpqDaTapeCountersReReads
OID (numeric): 1.3.6.1.4.1.232.3.2.10.1.1.6
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 cpqDaTapeCountersReReads?
cpqDaTapeCountersReReads counts how many times blocks had to be re-read from a tape device, maintained since the Tape Hardware Interface driver was loaded. Like re-writes, occasional re-reads are normal, but a dramatic rise suggests the device needs cleaning, and persistent re-reads afterward point to a real problem, possibly RFI-related interference. For example, an admin troubleshooting slow or failing tape restores would check this counter first and clean the drive before escalating further.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.232.3.2.10.1.1.6 snmpwalk -v2c -c public <target> CPQIDA-MIB::cpqDaTapeCountersReReads
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.232.3.2.10.1.1.6.1 snmpget -v2c -c public <target> CPQIDA-MIB::cpqDaTapeCountersReReads.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 |
|---|---|---|
| 1.3.6.1.4.1.232.3 | cpqDriveArray | CPQIDA-MIB |
| 1.3.6.1.4.1.232.3.2 | cpqDaComponent | CPQIDA-MIB |
| 1.3.6.1.4.1.232.3.2.10 | cpqDaTapeCounters | CPQIDA-MIB |
| 1.3.6.1.4.1.232.3.2.10.1 | cpqDaTapeCountersTable | CPQIDA-MIB |
| 1.3.6.1.4.1.232.3.2.10.1.1 | cpqDaTapeCountersEntry | CPQIDA-MIB |
| 1.3.6.1.4.1.232.3.2.10.1.1.6 | cpqDaTapeCountersReReads | CPQIDA-MIB |