On 8/13/2010 8:51 PM, Ryan Coleman wrote: > Can anyone give me any reasons to buy these over 7200RPMs for a RAID? I may need to pinch pennies if I have to finance my next servers out of pocket. Stupid idea, I know, but I really want to know if there's a reason to skimp. > > -- > Ryan > > Lower power consumption if you don't need the performance. I built a 2x1.5tb mirror of WD "AV low power" drives. That combined with the intel d510 board an entire server only consumes ~36 watts at idle. We have another nearly identical setup at work that consumes 26watts with a properly sized, more efficient PSU. Unfortunately smartd is emailing me that one is failing the smart self test. They are only about a month old :-( Read your reviews carefully, some of the "green" 5900rpm drives have a high failure rate! I tried to pick the one with the best reviews and still seems I may have gotten a bad one. apollo dean # smartctl -a /dev/sda smartctl version 5.38 [i686-pc-linux-gnu] Copyright (C) 2002-8 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF INFORMATION SECTION === Device Model: WDC WD15EVDS-63V9B0 Serial Number: WD-WMAVxxxxxxx Firmware Version: 01.00A01 User Capacity: 1,500,301,910,016 bytes Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Fri Aug 13 21:48:06 2010 CDT 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: ( 121) The previous self-test completed having the read element of the test failed. Total time to complete Offline data collection: (35580) seconds. 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 183 182 021 Pre-fail Always - 5841 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 27 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 099 099 000 Old_age Always - 1375 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 26 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 15 193 Load_Cycle_Count 0x0032 156 156 000 Old_age Always - 133918 194 Temperature_Celsius 0x0022 120 110 000 Old_age Always - 30 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 1 199 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 Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Completed: read failure 90% 1238 1101009908 # 2 Extended offline Completed: read failure 90% 1070 1101009908 # 3 Extended offline Completed: read failure 70% 905 1101009908 # 4 Extended offline Completed: read failure 70% 737 1101009908 # 5 Extended offline Completed: read failure 70% 569 1101009908 # 6 Extended offline Completed: read failure 90% 400 1101009908 # 7 Short offline Completed: read failure 90% 351 1101009908 # 8 Short offline Completed: read failure 90% 128 1101009908 # 9 Extended offline Completed: read failure 90% 122 1101009908