Date: Sat, 15 Dec 2007 17:12:54 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-current@freebsd.org Subject: Re: ZFS melting under postgres... Message-ID: <fk0ue7$bp$1@ger.gmane.org> In-Reply-To: <86tzmk54tt.fsf@ds4.des.no> References: <47606C09.2070209@isc.org> <47609F0A.7010805@clearchain.com> <47609FE3.8040606@barafranca.com> <4760B444.1080604@clearchain.com> <06CAC7FC-DB58-441D-A6E0-76D1D8133393@tamu.edu> <86ir31xwlu.fsf@ds4.des.no> <ADCCD5E6-A792-49B9-A346-753176C12F2E@tamu.edu> <fjuljp$cvb$1@ger.gmane.org> <476343B4.8080208@FreeBSD.org> <fk09p8$b16$1@ger.gmane.org> <86tzmk54tt.fsf@ds4.des.no>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig45592461C08CDE7CD3665A24 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Dag-Erling Sm=C3=B8rgrav wrote: > Ivan Voras <ivoras@freebsd.org> writes: >> Maxim Sobolev wrote: >>> That's no longer true. You can't get more than 5-10MB/s from >>> seek-intensive RAID0 with two 15K drives, while 20-30MB/s is not a >>> problem for the comparable priced/sized SSD drive. >> Can you point me at a vendor with SSDs of such characteristics? >=20 > Kingston CF Elite, 20 / 25 MBps write / read > Kingston CF Ultimate, 40 / 45 MBps write / read >=20 > SanDisk Extreme III CF, 20 MBps > SanDisk Extreme IV CF, 45 MBps >=20 > Sony CF 300X, 45 MBps >=20 > These are just a few of those available from my regular supplier. These are all "normal" CompactFlash cards, for which the widely available size seems to be 16 GB max, right? I was thinking about something more like this: http://gizmodo.com/gadgets/peripherals/adatas-128gb-solid-state-drive-see= s-the-light-of-day-231693.php or this: http://www.mtron.net/English/Product/pc_msd1000.asp Did you (or anyone) deploy CF drives for production servers? --------------enig45592461C08CDE7CD3665A24 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHY/0GldnAQVacBcgRAlXjAJ9qUpn4QkNeG+GJpvssaG8fQhZXowCgmn6y 0ZF2lWBgaCoUWlhQ3aOQ4K8= =sAGu -----END PGP SIGNATURE----- --------------enig45592461C08CDE7CD3665A24--
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