block device, beyond specifying that the mount must be read-only. For example, under Linux, ext3 requires that -o ro, noload is used. The noload option directs the file system not to attempt to replay the journal.

Read-only mode must be considered a final opportunity to migrate data off the device since device failure is more likely with continued use.

The IO Accelerator might enter failure mode. In this case, the device is offline and inaccessible. This can be caused by an internal catastrophic failure, improper firmware upgrade procedures, or device wears out.

IMPORTANT:

•For service or warranty-related questions, contact the company you purchased the device from.

•For products with multiple IO Accelerator devices, these modes are maintained independently for each device.

Health monitoring techniques

fio-status

Output from the fio-statusutility shows the health percentage and drive state. These items are referenced as Media status in the following sample output.

Found 3 ioMemory devices in this system Fusion-io driver version: 3.1.0 build 364 Adapter: Single Adapter

HP IO Accelerator 1.30TB, Product Number:AJ878B, SN:1133D0248, FIO SN:1134D9565

...

Media status: Healthy; Reserves: 100.00%, warn at 10.00%; Data: 99.12% Lifetime data volumes:

Physical bytes written: 6,423,563,326,064

Physical bytes read : 5,509,006,756,312

HP IO Accelerator Management Tool: In the Device Report tab, look for the Reserve Space percentage in the right column. The higher the percentage, the healthier the drive is likely to be.

SNMP: On Windows or Linux operating systems, see the corresponding section for details on "Configuring the SNMP master agent."

The following Health Status messages are produced by the fio-statusutility:

•Healthy

•Read-only

•Reduced-write

•Unknown

Monitoring IO Accelerator health 53