| | 1 | = NAS devices and smartmontools = |
| | 2 | |
| | 3 | With the increased use of netbooks and laptops, plus other mobile devices on home networks, there can be advantages to adding some Network Attached Storage (NAS) to the mix. This can be wired (i.e. with 100 Mbps or gigabit wired ethernet) directly to the wireless access point. |
| | 4 | |
| | 5 | One of the disadvantages of NAS is that it is typically managed via a web interface and "what you see is what you get". This may not include access to SMART information. Using RAID (other than RAID 0) on the NAS box should help reliability but there is always that nagging feeling that all may not be well with one of those disks. |
| | 6 | |
| | 7 | The remaining part of this page will discuss the Dlink DNS-323 and DNS-321 NAS boxes. They take one or two 3.5" SATA disks whose size can be up to 1.5 TB each. If two disks are present then they can be configured to appear as separate volumes, RAID 0, RAID 1 (and linear mode?). A variable speed fan keeps the disks relatively cool (and isn't too loud) and the disks are spun down when not in use. I leave my DNS-323 on all the time and have it connected to a UPS. The standard firmware from Dlink has a web interface whose look and feel should be familiar to anyone who has configured a wireless access point. |
| | 8 | |
| | 9 | Like many such devices these NAS boxes are running Linux under the covers. Further the Dlink firmware during its boot sequence checks the top level directory of the first disk for an executable file called "funplug" and if present executes it. This is a hackers delight allowing many additional features to be added while maintaining the manufacturer's firmware. One such hacker who goes by the name of "fonz" has almost a mini-distribution leveraged off the standard Dlink firmware. See http://wiki.dns323.info/ for more information and http://www.inreto.de/dns323/fun-plug/ to download fonz's work. I use version 0.5 without problems. |
| | 10 | |
| | 11 | So Dlink gives us a web interface and telnet for low level access. Fonz adds ssh and numerous other packages including smartmontools. The 323 and 321 use marvell SATA controllers which are not currently auto-detected. Hence an additional "-d marvell" option is required. The two SATA disks are named /dev/sda and /dev/sdb and here is output from the first disk on a DNS-321 followed by the second disk on a DNS-323. |
| | 12 | {{{ |
| | 13 | #!sh |
| | 14 | # smartctl -i -d marvell /dev/sda |
| | 15 | smartctl version 5.38 [arm-unknown-linux-uclibc] Copyright (C) 2002-8 Bruce Allen |
| | 16 | Home page is http://smartmontools.sourceforge.net/ |
| | 17 | |
| | 18 | === START OF INFORMATION SECTION === |
| | 19 | Device Model: WDC WD10EACS-00D6B1 |
| | 20 | Serial Number: xxxxxx |
| | 21 | Firmware Version: 01.01A01 |
| | 22 | User Capacity: 1,000,204,886,016 bytes |
| | 23 | Device is: Not in smartctl database [for details use: -P showall] |
| | 24 | ATA Version is: 8 |
| | 25 | ATA Standard is: Exact ATA specification draft version not indicated |
| | 26 | Local Time is: Fri Jan 23 02:47:55 2009 UTC |
| | 27 | SMART support is: Available - device has SMART capability. |
| | 28 | SMART support is: Enabled |
| | 29 | }}} |
| | 30 | |
| | 31 | {{{ |
| | 32 | #!sh |
| | 33 | # smartctl -a -d marvell /dev/sdb |
| | 34 | smartctl version 5.38 [arm-unknown-linux-uclibc] Copyright (C) 2002-8 Bruce Allen |
| | 35 | Home page is http://smartmontools.sourceforge.net/ |
| | 36 | |
| | 37 | === START OF INFORMATION SECTION === |
| | 38 | Model Family: Seagate Barracuda 7200.10 family |
| | 39 | Device Model: ST3320620AS |
| | 40 | Serial Number: xxxx |
| | 41 | Firmware Version: 3.AAK |
| | 42 | User Capacity: 320,072,933,376 bytes |
| | 43 | Device is: In smartctl database [for details use: -P show] |
| | 44 | ATA Version is: 7 |
| | 45 | ATA Standard is: Exact ATA specification draft version not indicated |
| | 46 | Local Time is: Thu Jan 22 23:22:50 2009 EST |
| | 47 | SMART support is: Available - device has SMART capability. |
| | 48 | SMART support is: Enabled |
| | 49 | |
| | 50 | === START OF READ SMART DATA SECTION === |
| | 51 | SMART overall-health self-assessment test result: PASSED |
| | 52 | |
| | 53 | General SMART Values: |
| | 54 | Offline data collection status: (0x82) Offline data collection activity |
| | 55 | was completed without error. |
| | 56 | Auto Offline Data Collection: Enabled. |
| | 57 | Self-test execution status: ( 0) The previous self-test routine completed |
| | 58 | without error or no self-test has ever |
| | 59 | been run. |
| | 60 | Total time to complete Offline |
| | 61 | data collection: ( 430) seconds. |
| | 62 | Offline data collection |
| | 63 | capabilities: (0x5b) SMART execute Offline immediate. |
| | 64 | Auto Offline data collection on/off support. |
| | 65 | Suspend Offline collection upon new |
| | 66 | command. |
| | 67 | Offline surface scan supported. |
| | 68 | Self-test supported. |
| | 69 | No Conveyance Self-test supported. |
| | 70 | Selective Self-test supported. |
| | 71 | SMART capabilities: (0x0003) Saves SMART data before entering |
| | 72 | power-saving mode. |
| | 73 | Supports SMART auto save timer. |
| | 74 | Error logging capability: (0x01) Error logging supported. |
| | 75 | General Purpose Logging supported. |
| | 76 | Short self-test routine |
| | 77 | recommended polling time: ( 1) minutes. |
| | 78 | Extended self-test routine |
| | 79 | recommended polling time: ( 115) minutes. |
| | 80 | |
| | 81 | SMART Attributes Data Structure revision number: 10 |
| | 82 | Vendor Specific SMART Attributes with Thresholds: |
| | 83 | ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE |
| | 84 | 1 Raw_Read_Error_Rate 0x000f 113 099 006 Pre-fail Always - 109438732 |
| | 85 | 3 Spin_Up_Time 0x0003 096 095 000 Pre-fail Always - 0 |
| | 86 | 4 Start_Stop_Count 0x0032 099 099 020 Old_age Always - 1395 |
| | 87 | 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 |
| | 88 | 7 Seek_Error_Rate 0x000f 069 060 030 Pre-fail Always - 8296949 |
| | 89 | 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 2232 |
| | 90 | 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 |
| | 91 | 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 26 |
| | 92 | 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 |
| | 93 | 189 High_Fly_Writes 0x003a 100 100 000 Old_age Always - 0 |
| | 94 | 190 Airflow_Temperature_Cel 0x0022 072 055 045 Old_age Always - 28 (Lifetime Min/Max 28/28) |
| | 95 | 194 Temperature_Celsius 0x0022 028 045 000 Old_age Always - 28 (0 18 0 0) |
| | 96 | 195 Hardware_ECC_Recovered 0x001a 068 060 000 Old_age Always - 107892778 |
| | 97 | 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 |
| | 98 | 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 |
| | 99 | 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 |
| | 100 | 200 Multi_Zone_Error_Rate 0x0000 100 253 000 Old_age Offline - 0 |
| | 101 | 202 TA_Increase_Count 0x0032 100 253 000 Old_age Always - 0 |
| | 102 | |
| | 103 | SMART Error Log Version: 1 |
| | 104 | No Errors Logged |
| | 105 | |
| | 106 | SMART Self-test log structure revision number 1 |
| | 107 | Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error |
| | 108 | # 1 Short offline Completed without error 00% 0 - |
| | 109 | |
| | 110 | SMART Selective self-test log data structure revision number 1 |
| | 111 | SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS |
| | 112 | 1 0 0 Not_testing |
| | 113 | 2 0 0 Not_testing |
| | 114 | 3 0 0 Not_testing |
| | 115 | 4 0 0 Not_testing |
| | 116 | 5 0 0 Not_testing |
| | 117 | Selective self-test flags (0x0): |
| | 118 | After scanning selected spans, do NOT read-scan remainder of disk. |
| | 119 | If Selective self-test is pending on power-up, resume after 0 minute delay. |
| | 120 | }}} |
