HP IO Accelerator for BladeSystem c-Class Solaris User Manual download pdf (Page 30)

Utilities 30

Clear support

A Clear is the default state of running fio-sure-erase (with no options), and refers to the act of

performing a full low-level erase (every cell pushed to 1) of the entire NAND media, including retired erase

blocks.

Metadata that is required for operation will not be destroyed (media event log, erase counts, physical bytes

read/written, performance and thermal history), but any user-specific metadata will be destroyed.

The following describes the steps taken in the Clear operation:

1. Creates a unity map of every addressable block (this allows fio-sure-erase to address every block,

including previously unmapped bad blocks).

2. For each block, performs an erase cycle (every cell is pushed to 1).

3. Restores the bad block map.

Formats the device (the purpose of this is to make the device usable again, the utility erases all of the headers

during the clear).

Purge support

A Purge is implemented by using the -p option with fio-sure-erase. Purge refers to the act of first

overwriting the entire NAND media (including retired erase blocks) with a single character (every cell written

to logical 0), and then performing a full chip erase (every cell pushed to 1) across all media (including retired

erase blocks).

Metadata that is required for operation will not be destroyed (media event log, erase counts, physical bytes

read/written, performance and thermal history), but any user-specific metadata will be destroyed.

The Purge operation includes the following steps:

1. Creates a unity map of every addressable block (this allows fio-sure-erase to address every block,

including previously unmapped bad blocks).

2. For each block, performs a write cycle (every cell is pushed to 0).

3. For each block, performs an erase cycle (every cell pushed to 1).

4. Restores the bad block map.

Formats the device (the purpose of this is to make the device usable again, the utility erases all of the headers

during the clear).

fio-update-iodrive

CAUTION: HP strongly recommends that data is backed up on any IO Accelerator device before

performing a firmware upgrade.

Description

Updates the IO Accelerator device's firmware. This utility scans the PCIe bus for all IO Accelerator devices

and updates them.

A progress bar and percentage are shown for each device as the update completes.

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HP IO Accelerator for BladeSystem c-Class Solaris User Manual Page 30