HDD for Ceph OSD

[blackpaw]

Looking at extending my very small ceph cluster. Made some inital bad choices - using WD 3TB Red, should have gone with multiple smaller & faster drives

Can get a reasonable price on Seagate SATA3 1TB 7200RPM 64mb Cache (ST1000DM003). They are a bit faster in seq and IOPS. Does anyone see anything particualrly wrong with them?

 

[blackpaw]

After a bit more research the Western Digital Blue 1TB SATA3 HDD 64M Caviar Blue WD10EZEX looks better - better IOPS and better failure rate.

 

[mir]

I can vote for WD10EZEX 1TB. I have a pair in a ZFS RAID10. Performs very well and have been running 24/7/365 for 2 years without an itch.

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   176   176   021    Pre-fail  Always       -       2191
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       21
  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   084   084   000    Old_age   Always       -       11888
 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       -       21
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       20
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0022   107   101   000    Old_age   Always       -       36
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

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   176   176   021    Pre-fail  Always       -       2191
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       20
  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   084   084   000    Old_age   Always       -       11889
 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       -       20
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       19
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0022   110   104   000    Old_age   Always       -       33
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

 

[blackpaw]

Thanks mir, good to know.