Understanding the Operating Temperature Range for the ioDrive

The ioDrive is designed to operate in a system where the ambient temperature ranges from 0 to 55 degrees Celcius, and with at least 300 Linear Feet per Minute (LFM) of airflow through the system.

The ioDrive has the ability to monitor the core temperature of the onboard controller chip. This temperature is reported in fio-status as "Internal temperature." The controller temperature should not exceed 85°C*.

Note: fio-status provides an additional temperature reading referred to as either "Ambient temperature" or "Board temperature," depending on the driver level. This temperature reading is not to be used in place of proprietary server chassis ambient temperature when determining the operational environment. As a best practice, please use the proprietary server chassis ambient temperature reading when determining the operational thermal environment (maximum 55°C). If the chassis ambient temperature is unavailable, use a thermal couple to determine the operational thermal environment.

Thermal Protection in Driver Version 2.x

Thermal protection is built into driver versions 2.1.0 and later. In order to protect against thermal damage, the ioDrive will start throttling write performance once the controller temperature reaches 78°C. If the controller temperature continues to rise, the ioDrive will shut down once the controller temperature reaches 85°C.

Sample fio-status Output

$ fio-status -a

Found 1 ioDrive in this system
Fusion-io driver version: 2.2.0 build 82

fct0	Attached as 'fioa' (block device)
	Fusion-io ioDIMM3 160GB, Product Number:FS1-001-161-ES SN:01234
	ioDIMM3, PN:001194010, Mfr:000, Date:20081209
	Alt PN:FS1-SS1-161-ES
	Powerloss protection: protected
	PCI:06:00.0
	Vendor:1aed, Device:1005, Sub vendor:1aed, Sub device:1010
	Firmware v5.0.5, rev 43674
	160.92 GBytes block device size, 198 GBytes physical device size
	Error correction: 11 bits per 240 bytes
	Format v300, 314,287,168 sectors of 512 bytes
	FPGA ID:0 Format UID:0000000013cf01326a39000048e06800
	PCIE slot available power: 75.00W
	Sufficient power available: Unknown
	PCIE negotiated link: 4 lanes at 2.50 Gbits/sec each, 1000 MBytes/sec total
	Internal temperature: avg 51.2 degC, max 51.7 degC
	Board temperature: 44 degC
	Internal voltage: avg 0.979V, max 0.979V
	Aux voltage: avg 2.493V, max 2.493V
	Media status: Healthy; Reserves: 100.00%, warn at 10.00%
	Lifetime data volumes:
	   Physical bytes written: 673,015,077,904
	   Physical bytes read   : 677,724,188,504
	RAM usage:
	   Current: 138,169,592 bytes
	   Peak   : 138,169,592 bytes

* Warning: Operating the ioDrive outside of the specified thermal range may shorten the life span of the ioDrive and void its warranty.