HGST HUH721008AL5204

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SINN78

Active Member
Apr 3, 2016
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Got a couple of these drives from eBay and I got netapp drives trying to use them in none netapp hardware (windows)
Drives seem to work fine, but the speed slows to a crawl can these not be used in none netapp hardware?
Anyway to flash the firmware on these to none netapp?
 

SINN78

Active Member
Apr 3, 2016
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check if write cache and read ahead options enabled
well write cache was disabled I enabled it and that seems to have solved the writing slow down where is the read ahead option located?
 

Whaaat

Active Member
Jan 31, 2020
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WCE, RCD and DRA values can be in arbitrary state in used decommissioned drives. RAID controllers set those values on drives according to their own caching policy.

Code:
PS C:\sdparm> .\sdparm_64.exe -p ca --long pd3
    pd3: HGST      HUS726040ALS210   ADD5
    Direct access device specific parameters: WP=0  DPOFUA=1
Caching (SBC) [ca] mode page:
  IC            0  [cha: y, def:  0, sav:  0]  Initiator control
  ABPF          0  [cha: y, def:  0, sav:  0]  Abort pre-fetch
  CAP           0  [cha: y, def:  0, sav:  0]  Caching analysis permitted
  DISC          0  [cha: y, def:  0, sav:  0]  Discontinuity
  SIZE          0  [cha: y, def:  0, sav:  0]  Size enable
  WCE           1  [cha: y, def:  0, sav:  1]  Write cache enable
  MF            0  [cha: y, def:  0, sav:  0]  Multiplication factor
  RCD           0  [cha: y, def:  0, sav:  0]  Read cache disable
  DRRP          0  [cha: y, def:  0, sav:  0]  Demand read retention priority
  WRP           0  [cha: y, def:  0, sav:  0]  Write retention priority
  DPTL          -1  [cha: y, def: -1, sav: -1]  Disable pre-fetch transfer length
  MIPF          0  [cha: y, def:  0, sav:  0]  Minimum pre-fetch
  MAPF          -1  [cha: y, def: -1, sav: -1]  Maximum pre-fetch
  MAPFC         -1  [cha: y, def: -1, sav: -1]  Maximum pre-fetch ceiling
  FSW           0  [cha: y, def:  0, sav:  0]  Force sequential write
  LBCSS         0  [cha: y, def:  0, sav:  0]  Logical block cache segment size
  DRA           0  [cha: y, def:  0, sav:  0]  Disable read ahead
  SYNC_PROG     0  [cha: n, def:  0, sav:  0]  Synchronous cache progress indication
  NV_DIS        0  [cha: n, def:  0, sav:  0]  Non-volatile cache disable
  NCS           16  [cha: y, def:  8, sav: 16]  Number of cache segments
  CSS           0  [cha: y, def:  0, sav:  0]  Cache segment size
 
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SINN78

Active Member
Apr 3, 2016
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Thank you put them back into my server after enabling write cache and all is well