SYNOLOGY-STORAGEIO-MIB

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Organization: www.synology.com

Last Updated: 2013-09-11

Category: Storage

Description: Monitors Synology NAS storage I/O statistics including read/write throughput and device utilization.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

What Is SYNOLOGY-STORAGEIO-MIB?

SYNOLOGY-STORAGEIO-MIB is a Synology module for monitoring storage I/O performance on a Synology NAS, covering per-device throughput, operation counts, and system load. It exposes a storage I/O table with per-device bytes read/written, read/write operation counts, and load-average figures over 1, 5, and 15-minute windows. Its monitoring focus is performance/hardware status of the storage subsystem: identifying a disk device with abnormally high or low throughput, elevated load averages, or a mismatch between operation counts and expected workload, which can reveal a failing drive, a saturated RAID array, or an I/O bottleneck. It is a self-contained Synology-specific module, though its load-average fields parallel the general Unix load-average concept. It is deployed on Synology DiskStation/RackStation NAS appliances used for file storage, backup targets, or virtualization storage. Engineers can download the SYNOLOGY-STORAGEIO-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SYNOLOGY-STORAGEIO-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Synology NAS (DiskStation/RackStation)

Monitoring Examples

An admin walks the storageIOTable/storageIOEntry, using storageIOIndex and storageIODevice to identify a specific disk, then compares storageIONRead/storageIONWritten and storageIOReads/storageIOWrites across devices to spot an outlier. A storageIOLA1/storageIOLA5/storageIOLA15 trio that climbs steadily while storageIOReads stays flat would indicate the storage subsystem is becoming I/O-bound, often preceding a disk failure or the need for RAID rebalancing.

What Can Be Monitored

per-disk read/write throughput
read/write operation counts
1/5/15-minute storage load averages

Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
OBJECT-TYPE
enterprises

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using storageIONRead OID:

Select a Synology NAS, DiskStation/RackStation (per-device storage I/O performance/load) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type storageIONRead into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The number of bytes read from this device since boot. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
synology	1.3.6.1.4.1.6574
storageIO	1.3.6.1.4.1.6574.101			Characteristics of the storage io information
storageIOTable	1.3.6.1.4.1.6574.101.1		not-accessible	Table of IO devices and how much data they have read/written.
storageIOEntry	1.3.6.1.4.1.6574.101.1.1		not-accessible	An entry containing a device and its statistics.
I32 storageIOIndex	1.3.6.1.4.1.6574.101.1.1.1	Integer32	not-accessible	Reference index for each observed device.
STR storageIODevice	1.3.6.1.4.1.6574.101.1.1.2	DisplayString	read-only	The name of the device we are counting/checking.
C32 storageIONReadEx	1.3.6.1.4.1.6574.101.1.1.3	Counter32	read-only	The number of bytes read from this device since boot.
C32 storageIONWritten	1.3.6.1.4.1.6574.101.1.1.4	Counter32	read-only	The number of bytes written to this device since boot.
C32 storageIOReads	1.3.6.1.4.1.6574.101.1.1.5	Counter32	read-only	The number of read accesses from this device since boot.
C32 storageIOWrites	1.3.6.1.4.1.6574.101.1.1.6	Counter32	read-only	The number of write accesses to this device since boot.
I32 storageIOLA	1.3.6.1.4.1.6574.101.1.1.8	Integer32	read-only	The load of disk (%)
I32 storageIOLA1	1.3.6.1.4.1.6574.101.1.1.9	Integer32	read-only	The 1 minute average load of disk (%)
I32 storageIOLA5	1.3.6.1.4.1.6574.101.1.1.10	Integer32	read-only	The 5 minute average load of disk (%)
I32 storageIOLA15	1.3.6.1.4.1.6574.101.1.1.11	Integer32	read-only	The 15 minute average load of disk (%)
C64 storageIONReadX	1.3.6.1.4.1.6574.101.1.1.12	Counter64	read-only	The number of bytes read from this device since boot.
C64 storageIONWrittenX	1.3.6.1.4.1.6574.101.1.1.13	Counter64	read-only	The number of bytes written to this device since boot.
storageIOConformance	1.3.6.1.4.1.6574.101.2
storageIOCompliances	1.3.6.1.4.1.6574.101.2.1
storageIOCompliance	1.3.6.1.4.1.6574.101.2.1.1			The compliance statement for storage IO entities which implement the SYNOLOGY STORAGEIO MIB.
storageIOGroups	1.3.6.1.4.1.6574.101.2.2
storageIOGroup	1.3.6.1.4.1.6574.101.2.2.1			A collection of objects providing basic information of an synology storage io entity.

RFC description

Storage I/O device statistics for Synology NAS systems, tracking read/write operations and load averages.

Start monitoring Synology NAS, DiskStation/RackStation (per-device storage I/O performance/load) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download SYNOLOGY-STORAGEIO-MIB