Ma uit dupa doua hdd-uri noi, probabil de 3TB fiecare. Vor fi puse in HTPC, deci vor fi up&running 24/7. Am gasit asa: Western Digital Red 3000GB SATA3 64MB 5400RPM - cica ar fi indicate pentru HTPC si rulare non-stop. Oare? Avantaj: 5400RPM, desi nu prea conteaza viteza, ca oricum zbarnaie si nu dorm cu sistemul in camera, plus garantie mai mare decat alte modele. Toshiba 3000GB SATA3 64MB 7200RPM - nimic special Seagate Baracuda - cu sau fara XT, iarasi nimic special. Ar mai fi WD Black, aici chiar nu stiu daca merita diferenta de pret si nici daca intr-adevar RED-urile ar avea ceva in plus pentru HTPC dupa cum spune producatorul si aia nu e doar marketing. Idei? Sugestii? Citind review-uri m-as orienta parca spre modele diferite, Toshiba si WD Red, macar poate pica unul singur in caz de ceva. Ideea ar fi sa iau doua identice ca spatiu, unul stocare si unul mirroring.
Trebuie musai sa stea in PC? Adica nu se poate sa fie intr-un enclosure USB 3.0, alimentat extern? Si pornit la nevoie... Intreb, nu stiu
Parca unele serii de Seagate-uri dadeau in primire destul de des. WD Red + Toshiba pare combinatia castigatoare. WD Black e cu aproape 50% mai scump decat varianta Red. Ai 2 ani garantie in plus, dar diferenta e prea mare.
RED-urile erau facute sa functioneze fara probleme in RAID, avand TLER enabled din fabrica (la seriile noi de la WD nu se mai poate activa cu utilitarul WD mai vechi) - asta evita in principiu sa iti sara discurile din matrice fara sa fie busite cu adevarat. Daca in respectivul HTPC nu folosesi RAID (si ma indoiesc profund ca vrei sa o faci) atunci orienteaza-te la cel mai ieftin, eventual din seria "video storage" gen Seagate SV35 sau similar.
Mai stie cineva care-s diferentele dintre HDD-urile "A/V" si cele normale? Producatorii nu mai zic nimic.
Din câte am înțeles eu (fără vreo documentație clară), au implementate niște funcții pentru ajutat la streaming, atât la citire cât și la scriere. Cea mai importantă e garantarea timpului de execuție pentru o operație (cam același lucru cu TLER, dar mai agresivă; la RED-uri TLER e activ doar la citire). Asta nu se face foarte complicat, cu cache-uri care să țină datele până reușesc scrierile, ci mult mai simplu: dacă operația durează mai mult decât normal (ex: nu poate să citească și ar trebui să mai încerce o dată) HDD-ul îți întoarce imediat datele pe care a putut să le citească, fără vreun mesaj de eroare, și continuă mai departe. Asta înseamnă că poți avea pierderi de date fără să-ți dai seama (tu vrei să scrii 010101010, el scrie 0101 și i se termină timpul, nu mai scrie și restul, trece la operația următoare fără să-ți dea eroare). La video chestia asta nu e extraordinar de gravă, pentru că îți apar doar ceva artefacte, dar dacă ții altceva pe hdd-ul ăla și-l folosești intensiv e posibil să intri în timeouts când citești/scrii orice. Eu am două HDD-uri WD AV-GP, le-am folosit doar în RAID1 și n-am avut probleme până acum.
Eu am aşa: - Western Digital Caviar Black 750GB Code: user@nas:~$ sudo smartctl -a /dev/sda [sudo] password for user: smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-39-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, [url]http://smartmontools.sourceforge.net[/url] === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Black Device Model: WDC WD7501AALS-00E8B0 Serial Number: WD-WMATV1780373 LU WWN Device Id: 5 0014ee 0014c04ba Firmware Version: 05.00K05 User Capacity: 750,156,374,016 bytes [750 GB] Sector Size: 512 bytes logical/physical Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Fri Apr 5 09:28:14 2013 EEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (18600) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. 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: ( 2) minutes. Extended self-test routine recommended polling time: ( 214) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x303f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 253 222 021 Pre-fail Always - 1166 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 953 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 100 253 000 Old_age Always - 0 9 Power_On_Hours 0x0032 075 075 000 Old_age Always - 18276 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 800 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 54 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 898 194 Temperature_Celsius 0x0022 111 098 000 Old_age Always - 39 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 18273 - # 2 Short offline Completed without error 00% 18249 - # 3 Short offline Completed without error 00% 18226 - # 4 Short offline Completed without error 00% 18202 - # 5 Short offline Completed without error 00% 18178 - # 6 Short offline Completed without error 00% 18154 - # 7 Extended offline Completed without error 00% 18135 - # 8 Short offline Completed without error 00% 18108 - # 9 Short offline Completed without error 00% 18084 - #10 Short offline Completed without error 00% 18060 - #11 Short offline Completed without error 00% 18036 - #12 Short offline Completed without error 00% 18012 - #13 Short offline Completed without error 00% 17988 - #14 Extended offline Completed without error 00% 17972 - #15 Short offline Completed without error 00% 17944 - #16 Short offline Completed without error 00% 17920 - #17 Short offline Completed without error 00% 17896 - #18 Short offline Completed without error 00% 17875 - #19 Short offline Completed without error 00% 17851 - #20 Short offline Completed without error 00% 17827 - #21 Extended offline Completed without error 00% 17806 - SMART Selective self-test log data structure revision number 1 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. - Seagate Barracuda Green (Adv. Format) - 2TB Code: user@nas:~$ sudo smartctl -a /dev/sdb smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-39-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Seagate Barracuda Green (Adv. Format) Device Model: ST2000DL003-9VT166 Serial Number: 6YD0JZ14 LU WWN Device Id: 5 000c50 037226ac2 Firmware Version: CC32 User Capacity: 2,000,398,934,016 bytes [2.00 TB] 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 Apr 5 09:29:43 2013 EEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED See vendor-specific Attribute list for marginal Attributes. General SMART Values: Offline data collection status: (0x82) Offline data collection activity was completed without error. Auto Offline Data Collection: Enabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: ( 612) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. 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: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x30b7) SCT Status supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 115 099 006 Pre-fail Always - 84080792 3 Spin_Up_Time 0x0003 093 092 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 43 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 075 061 030 Pre-fail Always - 30190197 9 Power_On_Hours 0x0032 086 086 000 Old_age Always - 12444 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 43 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 097 000 Old_age Always - 5 189 High_Fly_Writes 0x003a 099 099 000 Old_age Always - 1 190 Airflow_Temperature_Cel 0x0022 056 044 045 Old_age Always In_the_past 44 (0 14 47 35) 191 G-Sense_Error_Rate 0x0032 100 100 000 Old_age Always - 0 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 21 193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 44 194 Temperature_Celsius 0x0022 044 056 000 Old_age Always - 44 (0 21 0 0) 195 Hardware_ECC_Recovered 0x001a 024 009 000 Old_age Always - 84080792 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 259952895602848 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 2135857908 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 408547764 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 12442 - # 2 Short offline Completed without error 00% 12418 - # 3 Short offline Completed without error 00% 12394 - # 4 Short offline Completed without error 00% 12370 - # 5 Short offline Completed without error 00% 12346 - # 6 Short offline Completed without error 00% 12322 - # 7 Extended offline Completed without error 00% 12304 - # 8 Short offline Completed without error 00% 12275 - # 9 Short offline Completed without error 00% 12251 - #10 Short offline Completed without error 00% 12227 - #11 Short offline Completed without error 00% 12203 - #12 Short offline Completed without error 00% 12179 - #13 Short offline Completed without error 00% 12155 - #14 Extended offline Completed without error 00% 12142 - #15 Short offline Completed without error 00% 12111 - #16 Short offline Completed without error 00% 12087 - #17 Short offline Completed without error 00% 12063 - #18 Short offline Completed without error 00% 12042 - #19 Short offline Completed without error 00% 12018 - #20 Short offline Completed without error 00% 11994 - #21 Extended offline Completed without error 00% 11978 - SMART Selective self-test log data structure revision number 1 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. - SAMSUNG SpinPoint F2 EG 1.5TB Code: user@nas:~$ sudo smartctl -a /dev/sdc smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-39-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, [url]http://smartmontools.sourceforge.net[/url] === START OF INFORMATION SECTION === Model Family: SAMSUNG SpinPoint F2 EG Device Model: SAMSUNG HD154UI Serial Number: S1XWJ90SC11798 LU WWN Device Id: 5 0024e9 2018a5743 Firmware Version: 1AG01118 User Capacity: 1,500,301,910,016 bytes [1.50 TB] 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 3b Local Time is: Fri Apr 5 09:30:37 2013 EEST SMART support is: Available - device has SMART capability. SMART support is: Enabled === 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: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (19242) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. 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: ( 2) minutes. Extended self-test routine recommended polling time: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 34) minutes. SCT capabilities: (0x003f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 100 100 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0007 072 072 011 Pre-fail Always - 9310 4 Start_Stop_Count 0x0032 098 098 000 Old_age Always - 2139 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 099 099 051 Pre-fail Always - 44 8 Seek_Time_Performance 0x0025 100 100 015 Pre-fail Offline - 10618 9 Power_On_Hours 0x0032 095 095 000 Old_age Always - 24740 10 Spin_Retry_Count 0x0033 100 100 051 Pre-fail Always - 0 11 Calibration_Retry_Count 0x0012 100 100 000 Old_age Always - 99 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 70 13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age Always - 0 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 0 184 End-to-End_Error 0x0033 099 099 000 Pre-fail Always - 1 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 068 047 000 Old_age Always - 32 (Min/Max 25/37) 194 Temperature_Celsius 0x0022 067 046 000 Old_age Always - 33 (Min/Max 25/38) 195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 261866050 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 1 201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 24738 - # 2 Short offline Completed without error 00% 24714 - # 3 Short offline Completed without error 00% 24690 - # 4 Short offline Completed without error 00% 24666 - # 5 Short offline Completed without error 00% 24642 - # 6 Short offline Completed without error 00% 24618 - # 7 Extended offline Completed without error 00% 24600 - # 8 Short offline Completed without error 00% 24571 - # 9 Short offline Completed without error 00% 24547 - #10 Short offline Completed without error 00% 24523 - #11 Short offline Completed without error 00% 24499 - #12 Short offline Completed without error 00% 24475 - #13 Short offline Completed without error 00% 24451 - #14 Extended offline Completed without error 00% 24437 - #15 Short offline Completed without error 00% 24407 - #16 Short offline Completed without error 00% 24383 - #17 Short offline Completed without error 00% 24359 - #18 Short offline Completed without error 00% 24338 - #19 Short offline Completed without error 00% 24314 - #20 Short offline Completed without error 00% 24290 - #21 Extended offline Completed without error 00% 24272 - SMART Selective self-test log data structure revision number 1 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. Power-on hours par legit, desi Seagate-ul ăla de 2TB pare mai vechi (l-am luat chiar înainte să crească preţurile - parcă a trecut mai mult de un an jumate de atunci). Calculatorul care le găzduieşte e up 24/7.
