Baš čitam danas to i sjetim se da sam prije godinu i nešto imao problema s ugradnjom jednog novog 2.5" WD10SPZX. Još se čudio tada da disk ima 128MB cachea.
Sve je bilo ok dok nisam pustio kopiranje gomile velikih fileova sa starog diska na novi . Nakon tjedan dana disk je razvio bad sektore, uslijedio povrat, na kraju uzeo novi Red.
Sad sam se sjetio i našao rezultate benchmarka tog plavca :-)
Read je konstantno prikazivao 200+MB/s što je nebuloza - plava crta na vrhu.
Write (crvena crta) bi s početnih 80-ak MB/s (što je realno) odjednom pala skoro na nulu i tako do kraja diska.
Jel moguće da je WD još pred godinu i pol uvaljivao SMR u taj model?
Random read performanse su bile nerealno dobre za taj disk, ali sam to pripisao velikom cacheu:
Code:
512 B blocks: 661.3 IO/s, 330.7 KiB/s ( 2.7 Mbit/s)
1 KiB blocks: 442.4 IO/s, 442.4 KiB/s ( 3.6 Mbit/s)
2 KiB blocks: 486.5 IO/s, 973.0 KiB/s ( 8.0 Mbit/s)
4 KiB blocks: 373.2 IO/s, 1.5 MiB/s ( 12.2 Mbit/s)
8 KiB blocks: 313.9 IO/s, 2.5 MiB/s ( 20.6 Mbit/s)
16 KiB blocks: 362.9 IO/s, 5.7 MiB/s ( 47.6 Mbit/s)
32 KiB blocks: 351.5 IO/s, 11.0 MiB/s ( 92.1 Mbit/s)
64 KiB blocks: 250.4 IO/s, 15.6 MiB/s (131.3 Mbit/s)
128 KiB blocks: 255.1 IO/s, 31.9 MiB/s (267.5 Mbit/s)
256 KiB blocks: 191.8 IO/s, 47.9 MiB/s (402.2 Mbit/s)
512 KiB blocks: 110.4 IO/s, 55.2 MiB/s (463.0 Mbit/s)
1 MiB blocks: 60.5 IO/s, 60.5 MiB/s (507.4 Mbit/s)
2 MiB blocks: 68.2 IO/s, 136.5 MiB/s ( 1.1 Gbit/s)
4 MiB blocks: 33.0 IO/s, 132.0 MiB/s ( 1.1 Gbit/s)
8 MiB blocks: 27.0 IO/s, 215.9 MiB/s ( 1.8 Gbit/s)
16 MiB blocks: 14.7 IO/s, 234.6 MiB/s ( 2.0 Gbit/s)
32 MiB blocks: 5.7 IO/s, 180.9 MiB/s ( 1.5 Gbit/s)
64 MiB blocks: 3.8 IO/s, 243.5 MiB/s ( 2.0 Gbit/s)
128 MiB blocks: 1.7 IO/s, 219.0 MiB/s ( 1.8 Gbit/s)
256 MiB blocks: 0.9 IO/s, 225.0 MiB/s ( 1.9 Gbit/s)