某ショップにて中古の Intel SSD 320 600G を入手しました。GB単価が安かった(約50円)ため、思わず衝動買い。
中古ということで、総書き込み量はそれなりかと思っていたのですが、初回接続時にWindows7からCrystalDiskInfoで見てみると、次のような具合でした。
注: DeLOCK 42492 という eSATA/USB3.0 両対応のケースを使ったのですが、そのケース経由だと NCQ が使えないようです。下の CentOS6 のデータは、ケースから取り出して eSATA-SATA ケーブルで接続した場合です。SATA 電源は USB から供給。DeLOCK ケースはちょっと残念。
次は、CentOS6 で起動後の smartctl および hdparm のデータです。
# uname -a
Linux xxx 2.6.32-279.14.1.el6.x86_64 #1 SMP Tue Nov 6 23:43:09 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
# dmesg | egrep 'ata5|sdc'
ata5: SATA max UDMA/133 irq_stat 0x00400040, connection status changed irq 29
ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata5.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded
ata5.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out
ata5.00: ATA-8: INTEL SSDSA2CW600G3, 4PC10362, max UDMA/133
ata5.00: 1172123568 sectors, multi 16: LBA48 NCQ (depth 31/32)
ata5.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded
ata5.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out
ata5.00: configured for UDMA/133
ata5.00: configured for UDMA/133
ata5: EH complete
sd 5:0:0:0: [sdc] 1172123568 512-byte logical blocks: (600 GB/558 GiB)
sd 5:0:0:0: [sdc] Write Protect is off
sd 5:0:0:0: [sdc] Mode Sense: 00 3a 00 00
sd 5:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdc:
sd 5:0:0:0: [sdc] Attached SCSI disk
# smartctl -a /dev/sdc
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.32-279.14.1.el6.x86_64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Model Family: Intel 320 Series SSDs
Device Model: INTEL SSDSA2CW600G3
Serial Number: CVPR??????????????
LU WWN Device Id: 5 001517 bb28?????
Firmware Version: 4PC10362
User Capacity: 600,127,266,816 bytes [600 GB]
Sector Size: 512 bytes logical/physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Fri Nov 30 22:03:19 2012 JST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Error SMART Thresholds Read failed: scsi error aborted command
Smartctl: SMART Read Thresholds failed.
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection: Disabled.
Self-test execution status: ( 17) The self-test routine was aborted by
the host.
Total time to complete Offline
data collection: ( 1) seconds.
Offline data collection
capabilities: (0x75) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort Offline collection upon new
command.
No Offline surface scan supported.
Self-test supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 1) minutes.
Conveyance self-test routine
recommended polling time: ( 1) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 5
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
3 Spin_Up_Time 0x0020 100 100 --- Old_age Offline - 0
4 Start_Stop_Count 0x0030 100 100 --- Old_age Offline - 0
5 Reallocated_Sector_Ct 0x0032 100 100 --- Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 --- Old_age Always - 1
12 Power_Cycle_Count 0x0032 100 100 --- Old_age Always - 5
170 Reserve_Block_Count 0x0033 100 100 --- Pre-fail Always - 0
171 Program_Fail_Count 0x0032 100 100 --- Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 --- Old_age Always - 0
183 Runtime_Bad_Block 0x0030 100 100 --- Old_age Offline - 0
184 End-to-End_Error 0x0032 100 100 --- Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 --- Old_age Always - 0
192 Unsafe_Shutdown_Count 0x0032 100 100 --- Old_age Always - 1
199 UDMA_CRC_Error_Count 0x0030 100 100 --- Old_age Offline - 0
225 Host_Writes_32MiB 0x0032 100 100 --- Old_age Always - 17887
226 Workld_Media_Wear_Indic 0x0032 100 100 --- Old_age Always - 20
227 Workld_Host_Reads_Perc 0x0032 100 100 --- Old_age Always - 94
228 Workload_Minutes 0x0032 100 100 --- Old_age Always - 116
232 Available_Reservd_Space 0x0033 100 100 --- Pre-fail Always - 0
233 Media_Wearout_Indicator 0x0032 100 100 --- Old_age Always - 0
241 Host_Writes_32MiB 0x0032 100 100 --- Old_age Always - 17887
242 Host_Reads_32MiB 0x0032 100 100 --- Old_age Always - 3
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
Note: selective self-test log revision number (0) not 1 implies that no selective self-test has ever been run
SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
# hdparm -I /dev/sdc
/dev/sdc:
ATA device, with non-removable media
Model Number: INTEL SSDSA2CW600G3
Serial Number: CVPR??????????????
Firmware Revision: 4PC10362
Transport: Serial, ATA8-AST, SATA 1.0a, SATA II Extensions, SATA Rev 2.5, SATA Rev 2.6
Standards:
Used: unknown (minor revision code 0x0029)
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 1172123568
Logical Sector size: 512 bytes
Physical Sector size: 512 bytes
device size with M = 1024*1024: 572325 MBytes
device size with M = 1000*1000: 600127 MBytes (600 GB)
cache/buffer size = unknown
Nominal Media Rotation Rate: Solid State Device
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
SET_MAX security extension
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 64-bit World wide name
* IDLE_IMMEDIATE with UNLOAD
* WRITE_UNCORRECTABLE_EXT command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* Gen1 signaling speed (1.5Gb/s)
* Gen2 signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Phy event counters
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
* Data Set Management TRIM supported
* reserved 69[5]
* Deterministic read after TRIM
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
supported: enhanced erase
2min for SECURITY ERASE UNIT. 2min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5001517bb28?????
NAA : 5
IEEE OUI : 001517
Unique ID : bb28?????
Integrity word not set (found 0x0000, expected 0x4fa5)
おそらくは、ゼロ書き込みによるデータ消去後であろう？とは思いましたが、せっかくの機会 (中古SSDは初挑戦) なので、オールゼロになっているのか確認してみたところ、SSD 上に残っていた文字列は、次の３行のみでした。
Delete End
2012/09/21/11:46:19
某ショップの会社名
さて、それなら SecureErase を実施したほうが、性能上良いはずなので、実際やりました。
# cat /sys/block/sdc/device/model
INTEL SSDSA2CW60
# hdparm --user-master u --security-set-pass password /dev/sdc
security_password="password"
/dev/sdc:
Issuing SECURITY_SET_PASS command, password="password", user=user, mode=high
# hdparm --user-master u --security-erase-enhanced password /dev/sdc
security_password="password"
/dev/sdc:
Issuing SECURITY_ERASE command, password="password", user=user
SecureErase は１分ぐらい (ちょっとよそ見している間) で終わってしまいました。
ちなみに、Win7 上の Intel SSD Toolbox も試してみたのですが、わたしの環境では、どうしても frozen 状態が解除できず、実行できませんでした。
ThinkPad T510 に eSATA 接続の環境ですが、Toolbox の指示に従って、eSATA の先の SSD 電源を落としたり、刺しなおしたりしてみましたが、ダメでした。それなのに、デュアルブートにしてある CentOS6 では、frozen にはならず、簡単に SecureErase できました。
■関連記事
SecureErase を実施してみた
SecureErase のために frozen 状態を解除する方法
