Čet, 17.05.2012.

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Seagate X15 36LP
14.02.2002.
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- Uvod -

Iako u Hrvatskoj SCSI hard diskovi nisu pretjerano popularni kod većine korisnika, odlučili smo napisati članak o Seagate Cheetah X15 36LP disku. Naime, ovaj disk predstavlja vrhunac ponude hard diskova i samim tim zaslužuje pažnju. Jasno nam je da većina korisnika nikada neće kupiti SCSI disk zbog cijene, no nadamo se da među našim čitateljima ima i onih koji su uključeni u nabavku high-end servera za svoje tvrtke jer Cheetah X15 36LP je namijenjen baš njima, pogotovo ako se radi o više komada spojenih u jedan pošteni RAID.

Seagate Cheetah X15 36LP je jedini pripadnik druge generacije SCSI diskova koji se vrte na impresivnih 15.000 okretaja, tj. nasljednik je starije Cheetah X15 serije. Novi X15 36LP donosi dodatno smanjeni seek time (s 3.9 na 3.6ms) te veći buffer (8 umjesto 4MB). Naravno, radi se o novom dizajnu, a ne o istom disku kojem je samo povećan buffer.

Seagate nije sve podredio brzini - imao je i sigurnosna poboljšanja u vidu:

  • 3D Defense System - zaštita za podatke, sam disk te napredna diagnostika
  • SeaShell - sam disk je ugrađen u "oklop" koji smanjuje mogućnost oštećenja izazvanog vanjskim udarcem ili vibracijama. Naravno, oklop nije predviđen da izdrži dobar udarac maljem, ali valjda do toga neće doći!

Uz sve to na disk dolazi garancija od 5 godina te garantirani MBTF (mean time before failure) od 120,000 sati. Disk podržava SCSI Ultra2 Wide, Ultra160 i Ultra320 standarde. Kao i kod ATA-66/100 korištenje Ultra320 kontrolera neće donijeti povećanje performansi spram Ultre160, osim ako se ne radi o RAID-u gdje bi par X15 36LP diskova ubrzo popunio bandwidth Ultre160. Naravno, ako dođe do toga, onda je i PCI bus kočnica.

Testiranje Seagate X15 36LP diska napravili smo dosta davno, no s člankom se nismo žurili jer za to nije bilo potrebe - bitnije nam je bilo pozabaviti se stvarima poput AthlonXP procesora, KT266A matičnim pločama i sl.



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