HP B-series Switch Accelerators Linux Bedienungsanleitung PDF herunterladen (Seite 48)

Utilities 48

CAUTION: If the device is in Read-only mode, perform a format using fio-format before

running fio-sure-erase.

The fio-sure-erase utility cannot erase the device if it is in Minimal mode. Updating the

firmware might move the device out of Minimal Mode. If the device remains in Minimal mode,

contact HP Support (http://www.hp.com/support) for assistance.

IMPORTANT: Prior to reactivating the device, format the device with fio-format after running

fio-sure-erase

To run fio-sure-erase, the block device must be detached. For more information, see "fio-detach (on

page 42)."

Description

The fio-sure-erase is a command-line utility that securely removes data from IO Accelerator devices. It

complies with the Clear and Purge level of destruction from the following standards:

• DOD 5220.22-M—Complies with instructions for Flash EPROM.

• NIST SP800-88—Complies with instructions for Flash EPROM.

For more information, see the following sections on "Clear support" and "Purge support."

Syntax

fio-sure-erase [options] <device>

where <device> is the name of the device node (/dev/fctx), where x indicates the card number: 0, 1,

2, and so on. For example, /dev/fct0 indicates the first IO Accelerator device installed on the system. To

view this device node, use "fio-status (on page 45)."

IMPORTANT: Products with Multiple Devices

fio-sure-erase applies to individual IO Accelerator devices. For example, if you are

planning to purge an ioDrive Duo device, perform this operation on each of the two IO

Accelerator devices.

Options Description

-p

Purge instead of Clear: performs a write followed by an erase. For more information,

see "Purge support."

-y

No confirmation: Does not require a yes/no response to execute the utility.

-q

Quiet: Does not display the status bar.

IMPORTANT: If fio-sure-erase

is run without options, then a Clear is performed. For more

information, see "Clear support."

Each block of memory consists of uniform 1 bits or 0 bits.

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.

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