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Intel
®
Solid-State Drive 520 Series
February 2012 Product Specification
Order Number: 325968-001US 19
Intel
®
Solid-State Drive 520 Series
Table 12 defines the SMART Attribute status flags.
5.4.2 SMART Logs
The Intel SSD 520 Series implements the following Log Addresses: 00h, 02h, 03h, 06h,
and 07h.
The Intel SSD 520 Series implements host vendor specific logs (addresses 80h-9Fh) as
read and write scratchpads, where the default value is zero (0). Intel SSD 520 Series
does not write any specific values to these logs unless directed by the host through the
appropriate commands.
The Intel SSD 520 Series also implements a device vendor specific log at address A9h
as a read-only log area with a default value of zero (0).
5.5 Device Statistics
In addition to the SMART attribute structure, statistics pertaining to the operation and
health of the Intel SSD 520 Series can be reported to the host on request through the
Device Statistics log as defined in the ATA specification.
The Device Statistics log is a read-only GPL/SMART log located at read log address
0x04 and is accessible using READ LOG EXT, READ LOG DMA EXT or SMART READ LOG
commands.
Table 13 lists the Device Statistics supported by the Intel SSD 520 Series.
Table 12. SMART Attribute Status Flags
Status
Flag
Description Value = 0 Value = 1
SP Self-preserving attribute Not a self-preserving attribute Self-preserving attribute
EC Event count attribute Not an event count attribute Event count attribute
ER Error rate attribute Not an error rate attribute Error rate attribute
PE Performance attribute Not a performance attribute Performance attribute
OC Online collection attribute Collected only during offline activity
Collected during both offline and
online activity
PW Pre-fail warranty attribute Advisory Pre-fail
Table 13. Device Statistics Log
Page Offset Description
Equivalent SMART attribute if
applicable
0x00 - List of Supported Pages -
0x01 - General Statistics
0x08 Power Cycle Count 0Ch
0x10 Power-On Hours 09h
0x18 Logical Sectors Written E1h
0x20
Num Write Commands - incremented
by one for every host write command
-
0x28 Logical Sectors Read F2h
0x30
Num Read Commands - incremented
by one for every host write command
-
0x04 - General Errors Statistics
0x08 Num Reported Uncorrectable Errors BBh
0x10
Num Resets Between Command
Acceptance and Completion
-
0x06 - Transport Statistics
0x08 Num Hardware Resets -
0x10 Num ASR Events -
0x18 Num Interface CRC Errors -