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Knowledge Center

SNMP MIB Guide

Useful OIDs

Although there are many native MIB files supported by Synology, user may be interested in specific information about the Synology servers, such as CPU, memory and so on. The tables below list the native OIDs related to load, CPU, memory, network and disk for gathering useful device’s data easily.

Table 4-1 CPU-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.4.1.2021.10.1.5.1

laLoadInt.1

System load average within the last 1 minute

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.10.1.5.2

laLoadInt.2

System load average within the last 5 minutes

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.10.1.5.3

laLoadInt.3

System load average within the last 15 minutes

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.11.9.0

ssCpuUser

The percentage of CPU time spent processing user-level code

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.11.10.0

ssCpuSystem

The percentage of CPU time spent processing system- level code, calculated over the last minute

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.11.11.0

ssCpuIdle

The percentage of processor time spent idle, calculated over the last minute

DSM, DSM UC, APM

Table 4-2 Memory-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.4.1.2021.4.3.0

memTotalSwap

The total amount of swap space configured for this host

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.4.0

memAvailSwap

The amount of swap space currently unused or available

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.5.0

memTotalReal

The total amount of real/ physical memory

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.6.0

memAvailReal

The amount of real/physical memory currently unused or available

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.11.0

memTotalFree

The total amount of memory free or available for use on this host (This value typically covers both real memory and swap space or virtual memory.)

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.13.0

memShared

The total amount of real or virtual memory currently allocated for use as shared memory

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.14.0

memBuffer

The total amount of real or virtual memory currently allocated for use as memory buffers

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.4.15.0

memCached

The total amount of real or virtual memory currently allocated for use as cached memory

DSM, DSM UC, APM

Table 4-3 Network-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.2.1.31.1.1.1.1

ifName

The textual name of the interface

DSM, DSM UC, APM

.1.3.6.1.2.1.31.1.1.1.6

ifHCInOctets

The total number of octets received on the interface

DSM, DSM UC, APM

.1.3.6.1.2.1.31.1.1.1.10

ifHCOutOctets

The total number of octets transmitted out of the interface

DSM, DSM UC, APM

Table 4-4 Disk-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.2.1.25.2.3.1.3

hrStorageDescr

A description of the type and instance of the storage described by this entry

DSM, DSM UC, APM

.1.3.6.1.2.1.25.2.3.1.4

hrStorageAllocationUnits

The size, in bytes, of the data objects allocated from this pool

DSM, DSM UC, APM

.1.3.6.1.2.1.25.2.3.1.5

hrStorageSize

The size of the storage represented by this entry, in units of hrStorageAllocationUnits

DSM, DSM UC, APM

.1.3.6.1.2.1.25.2.3.1.6

hrStorageUsed

The amount of the storage represented by this entry

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.13.15.1.1.2

diskIODevice

The name of the device we are counting/checking

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.13.15.1.1.12

diskIONReadX

The number of bytes read from this device since boot

DSM, DSM UC, APM

.1.3.6.1.4.1.2021.13.15.1.1.13

diskIONWrittenX

The number of bytes written to this device since boot

DSM, DSM UC, APM

.1.3.6.1.4.1.6574.2

synoDisk

For Synology disk information (Synology only)

DSM, DSM UC, APM

Table 4-5 System-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.4.1.6574.1

synoSystem

For Synology system information (Synology only)

DSM, DSM UC, APM

Table 4-6 RAID-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.4.1.6574.3

synoRaid

For Synology RAID information (Synology only)

DSM, DSM UC, APM

Table 4-7 UPS-Related OID

OID
Name
Explanation
Supported OS

.1.3.6.1.4.1.6574.4

synoUPS

For Synology UPS information (Synology only)

DSM, DSM UC, APM

Download PDF
Table 4-1 CPU-Related OID
Table 4-2 Memory-Related OID
Table 4-3 Network-Related OID
Table 4-4 Disk-Related OID
Table 4-5 System-Related OID
Table 4-6 RAID-Related OID
Table 4-7 UPS-Related OID