Date: Fri, 27 Mar 2015 12:05:53 +0100 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: Hackers freeBSD <freebsd-hackers@freebsd.org> Subject: Re: Seagate Archive HDD Message-ID: <b49762f2489c21ffd82b728f5957003e@mailbox.ijs.si> In-Reply-To: <CADWvR2g8_PBmGXPF0nMctsJ2RxWvPwYKV9PHVru5qwdk9UcE4w@mail.gmail.com> References: <alpine.BSF.2.20.1503261124380.1417@laptop.wojtek.intra> <CADWvR2jCP0UT4DLWsfwwJ6qoBauDmuBDdHAfeMpfJPGNSB3-cw@mail.gmail.com> <alpine.BSF.2.20.1503270936080.719@laptop.wojtek.intra> <CADWvR2g8_PBmGXPF0nMctsJ2RxWvPwYKV9PHVru5qwdk9UcE4w@mail.gmail.com>
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2015-03-27 09:56, Igor Mozolevsky wrote: > On 27 March 2015 at 08:36, Wojciech Puchar <wojtek@puchar.net> wrote: >> what is a difference between "video recording" and normal SATA drives? >> except pricing of course. >=20 > The "video recording" HDDs have no, among other things, internal "long > recovery" mechanisms (hence the price) because unlike "data", "video" > doesn't really care if small part of a frame gets corrupted on disk=E2=80= =A6 AV disks support ATA streaming command set, are designed to last in high temperature always-on streaming digital AV environments, are silent, with Preemptive Wear Leveling (PWL) (the drive arm frequently sweeps across the disk to reduce uneven wear on the drive surface common to audio video streaming applications) (paraphrased from WD docs) Mark
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