Date: Tue, 23 Jun 2009 23:45:12 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Gary Kline <kline@thought.org> Cc: Kurt Buff <kurt.buff@gmail.com>, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: you're not going to believe this. Message-ID: <20090623214512.GA41195@slackbox.xs4all.nl> In-Reply-To: <20090623201041.GA23561@thought.org> References: <20090622230729.GA20167@thought.org> <a9f4a3860906231222r65faaf1cia6b68186c79f4791@mail.gmail.com> <20090623201041.GA23561@thought.org>
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--u3/rZRmxL6MmkK24 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 23, 2009 at 01:10:41PM -0700, Gary Kline wrote: > On Tue, Jun 23, 2009 at 12:22:19PM -0700, Kurt Buff wrote: > > On Mon, Jun 22, 2009 at 16:07, Gary Kline<kline@thought.org> wrote: > >=20 > > For a small unit like this, SSD is really nice. > >=20 > > But, for my workstations/servers, I'm wondering if a pure > > battery-backed RAM disk, in RAID1 with a regular hard drive, might be > > the real screamer. >=20 > battery-backed ram sound great for the time being! The downside is low capacity: 4-8 RAM modules, limiting these devices to 64GiB. And they consume more power than HDDs when idle! [http://techreport.com/articles.x/16255/11] > if not now [this minute], then relatively soon, i'm guessing > within a few years somebody will have a solid-state device that emulates > the current mechanical technology. it will wind up being considerably= =20 > faster than the current drives and suck Much less juice. =20 Intel's X25 is already faster [http://www.intel.com/design/flash/nand/extreme/index.htm] and consumes less electricity than a HDD [http://techreport.com/articles.x/16255/11]. Of course RAM-based disks kick ass when writing files. [http://techreport.com/articles.x/16255/6] > oh yeah, and in a few years *every* computer will have a battery back up > --not just our laptops. after some N minutes everything will be saved. > much less lost data due to sudden power outtages. I don't think so. Not every part of the world suffers from regular power outages. And efficient batteries require rare raw materials like lithium, with demand far outstripping winnable reserves. Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --u3/rZRmxL6MmkK24 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iEYEARECAAYFAkpBTOgACgkQEnfvsMMhpyVvsACaA0ZP1J6NuXtyujVbjw6ChjKB UUQAoJpQNv4pwelh/NqSIqLVjImXO1CD =3SOt -----END PGP SIGNATURE----- --u3/rZRmxL6MmkK24--
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