Hi,
Just a looking for a little help / clarification on identifying a drive that I just shucked.
Recently picked up an 8TB Seagate Expansion External drive to add capacity to my unraid server as they were reasonably prices (for Canadians) @ 239 CAD on Amazon.ca.
Opened up the enclosure expecting the usual Seagate Archive Drive (ST8000AS0002) but was surprised to find Seagate BarraCuda ST8000DM0004 instead
Just wanted to see in the community could clarify some details on the drive I had received?
Searching the drive model only brings up the Seagate Barracuda Pro Model in the 8TB Capacity, which shows a 7200rpm drive with a 256MB cache.
In running a few hdparm commands that had been suggested in other threads (output below), It seems this drive is a 5400rpm drive with an unknown cache.
In looking through other posts regarding shucking externals, I ran a few hdparm commands as follows.
/dev/sde:
max sectors = 15628053168/15628053168, HPA is disabled
From hdparm -i
/dev/sde:
Model=ST8000DM004-2CX188, FwRev=0001, SerialNo=WG8019TJ
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=15628053168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-4,5,6,7
From hdparm -I
cache/buffer size = unknown
Nominal Media Rotation Rate: 5425
How can I tell, or what to I look for to verify if this is a PMR or SMR drive?
How can I find out the actual cache size of the drive?
Any help or info is appreciated.
Cheers!
