SimpleTech ZeusIOPS User Manual

Zeus

IOPS

 3.5-Inch Fibre Channel Solid State Drive Product Manual Rev. 1.0

65

The following codes indicate that a fault has been detected during drive operation. The drive will 
remain operational despite the fault. The drive should be replaced at the earliest possible opportunity.

Operational fault codes are indicated as a series of flashes. The fault light will illuminate for 1 second, 
then off for 1 second, followed by a 10 second off delay. The number of 1 second flashes between 
each 10 second delay period are used to indicate the different fault conditions: 5, 7 or 9 flashes.

5 Flashes

Power Backup Device Faulty

The power backup circuit has failed. The power backup

circuit supplies power to the drive for a short period in the

event of a power failure. The backup power allows the

firmware to ensure that any active writes are completed. It

also allows information to be saved so that the drive

becomes ready promptly (< 30 seconds) when power is

restored. If this fault code is active and power is

unexpectedly lost, the drive may require several minutes to

come ready when the power is restored. If this occurs, only

the data blocks that were most recently written by the host

will be lost. If those same data blocks are read when power

is restored, the prior contents (prior to the lost write) will be

returned.  No data will be permanently lost. When this

fault code is active the drive will save all information and

prepare for power loss if a SYNCHRONIZE CACHE (10)

command (Opcode 0x35) is received via the host SCSI

interface. Most operating systems (Windows, Solaris,

Linux, etc.) will issue this command automatically when

shut down by the user. This will alleviate the potential

problems associated with this fault condition.

7 Flashes

NAND Flash Write Protect Error A write protect error was returned when the unit attempted

to write to the flash media. The most likely cause is a faulty

connection or voltage converter. If this error occurs

continuously then access from the host machine will be

locked out.

9 Flashes

NAND Busy Error

The BUSY pin from a NAND flash chip was asserted for too

long. The most likely cause is a faulty connection. If this

error occurs continuously then access from the host

machine will be locked out.