Date: Mon, 14 Jan 2019 09:49:09 -0500 From: Dan Langille <dan@langille.org> To: Ken Merry <ken@kdm.org> Cc: Scott Long <scottl@samsco.org>, freebsd-scsi@freebsd.org Subject: Re: Looking for PCI express SCSI diff card recommendations Message-ID: <3FEF849A-099E-49D7-A8F9-D7D0AA41A7B7@langille.org> In-Reply-To: <36153F07-0FE2-4DD5-9BD9-EBD18F88FC10@kdm.org> References: <9D2ED808-CE43-41BE-9698-45F0D85843A7@langille.org> <9C8F819A-7B8F-46C8-90E7-BDD16C785BD8@samsco.org> <36153F07-0FE2-4DD5-9BD9-EBD18F88FC10@kdm.org>
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--Apple-Mail=_C1092E82-99CF-498A-A2BC-DA080B343356 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 > On Jan 14, 2019, at 9:10 AM, Ken Merry <ken@kdm.org> wrote: >=20 > So, if you=E2=80=99re interested in newer tape drives / libraries, the = connection options are FC, SAS or (lately) RoCE. The first two work = fine, but I have yet to be able to test/qualify a RoCE drive with = FreeBSD. For FC, get a Qlogic board (up to 16Gb is supported now) or a = 16Gb or newer Emulex board. Both drivers support FC-Tape. I have had = much more experience with the Qlogic driver, but the Emulex driver does = seem to work fine. For SAS, get an LSI/Broadcom 12Gb or 6Gb board. = They support TLR, which is the SAS equivalent of FC-Tape. >=20 > The only current tape drive vendor is IBM, and you can get LTO (LTO-8 = is the latest, 12TB/30TB per tape) or TS drives (TS1160 is the latest, = 20TB/50TB) from them. TS only makes sense for people with a big = enterprise budget. In my case, this is for home use, where I have no budget for tape = libraries. The units I have are all production-cast-offs via kind = donations. Mind you, I did buy a Digital TL891 back in 2006 and it = still works. Photo of that beast here: = https://www.freebsddiary.org/digital-tl891.php = <https://www.freebsddiary.org/digital-tl891.php>; <--- that is the unit = for which I wanted a new SCSI card, but now I think the easiest solution = is to find another M/B (see below). >=20 > I believe HP stopped making their own tape drives at LTO-6. Anything = HP-branded that is LTO-7 or newer is going to be an IBM drive under the = hood. >=20 > If you want a tape library, there are a number of options. I know = from copious experience (yes I work there) that Spectra Logic libraries = work well with FreeBSD, and their support is good. IBM should also work = fine, and really, most libraries should work with FreeBSD without an = issue. I'm using a Dell TL4000 just now, connected via a SAS card (see below). = The other two tape libraries are legacy use only, for older backups. > If you want to use LTFS on FreeBSD, I ported IBM=E2=80=99s LTFS to = FreeBSD: >=20 > https://github.com/LinearTapeFileSystem/ltfs = <https://github.com/LinearTapeFileSystem/ltfs>; Wow, that's pretty nifty. Thanks. >=20 > You would need an IBM LTO-5 or newer tape drive. LTFS is helpful, but = keep in mind it isn=E2=80=99t a backup package in and of itself. It = doesn=E2=80=99t manage multiple tapes, it just gives you a filesystem on = a tape. I can see where that might be useful for restores. > As for SCSI adapters, I have a several ahc(4) boards in a machine = running FreeBSD/head and talking to SCSI and CD devices. The driver = seems to work fine. >=20 > One thing to consider if you=E2=80=99re switching machines and looking = at buying new hardware, is whether your current tape library is still = sufficient for your needs in terms of speed and capacity. Rather than = putting the money towards an LVD to HVD converter, you could put it = toward a new tape drive or library. The tape library in question is a DLT-7000, and it not used for active = backups. It is retained only for older backups. Current backups are to an LTO-4 tape library, vis a SAS2308 (Avago = Technologies / LSI) card. That is working well. I do have one M/B which has an both PCI and PCIE slots. I think the = easiest short term solution is to move both cards into a chassis with = that M/B. No purchase necessary. >=20 > Another thing to consider is using hard drives for backup. That might = work, depending on your requirements for durability and shelf life for = the media. I=E2=80=99m guessing that buying a number of enterprise SATA = (or SAS) drives would probably be cheaper than buying even a used = library, media and FC or SAS card. I backup to disk first, then copy to tape later. Both steps are handled = by Bacula, the backup package I'm using. Thank you. >=20 > Ken > =E2=80=94 > Ken Merry > ken@FreeBSD.ORG <mailto:ken@FreeBSD.ORG> >=20 >=20 >=20 >> On Jan 13, 2019, at 5:27 PM, Scott Long <scottl@samsco.org = <mailto:scottl@samsco.org>> wrote: >>=20 >> Hi Dan, >>=20 >> I don=E2=80=99t know of any PCI Express cards that do SCSI, much less = HVD SCSI. You might need to start looking at SAS or Fibre Channel for = future tape drives. Ken Merry would be a good person asl about those. >>=20 >> Scott >>=20 >>=20 >>> On Jan 13, 2019, at 3:22 PM, Dan Langille <dan@langille.org = <mailto:dan@langille.org>> wrote: >>>=20 >>> I have an existing SCSI differential PCI card which works. I want to = consolidate >>> some services into another chassis, so I am looking for a similar / = equivalent card >>> for a PCIE slot. >>>=20 >>> This is a photo of the connector, showing the SCS symbol. = https://twitter.com/DLangille/status/1084566640887562240 = <https://twitter.com/DLangille/status/1084566640887562240>; = <https://twitter.com/DLangille/status/1084566640887562240 = <https://twitter.com/DLangille/status/1084566640887562240>>; >>>=20 >>> I am looking for help in locating a replacement. I do not know what = to search for. >>>=20 >>> I think that is a n HD68 connector, but I'm failing to find = something on eBay. >>>=20 >>> Guidance please, especially if you can think of a model number to = search for. >>>=20 >>> Thank you. >>>=20 >>> -- >>> Dan Langille - BSDCan / PGCon >>> dan@langille.org <mailto:dan@langille.org> >>>=20 >>>=20 >>>=20 >>> _______________________________________________ >>> freebsd-scsi@freebsd.org mailing list >>> https://lists.freebsd.org/mailman/listinfo/freebsd-scsi >>> To unsubscribe, send any mail to = "freebsd-scsi-unsubscribe@freebsd.org" >>=20 >> _______________________________________________ >> freebsd-scsi@freebsd.org <mailto:freebsd-scsi@freebsd.org> mailing = list >> https://lists.freebsd.org/mailman/listinfo/freebsd-scsi = <https://lists.freebsd.org/mailman/listinfo/freebsd-scsi>; >> To unsubscribe, send any mail to = "freebsd-scsi-unsubscribe@freebsd.org" >=20 --Apple-Mail=_C1092E82-99CF-498A-A2BC-DA080B343356 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEzqcJ4oeyf8sgTIEBIU09XU2nXtMFAlw8oWUACgkQIU09XU2n XtMfhwf/dNn/rKEm2hzBNzkg1kDGsP+qeEvlE18kxb19IQE5iYBkJ4J4GMXm2sM6 7cHGLmfaIHVkB5eXiwj9erqjXGHzfF7UG2QV5I/6FLdEnPB6J0uYJLvJCz997mUc pI3io893zxbQ2Bj6eiB4VFQLdIShuKG+UdmvxCR04tmx959SWf/G8uTvTQjhN3jk 5pOjTLJl7wH/dsXIvN+dKFYnQEbiLO9wp/DO281OKp7jZYT3zMDD4HzeTtk+3baM W8v5iP6YQYc6bxQOzvQ9kUqcWRiYi1AMkfxzaZu3HFTVYPSFvUhSrKVktwn4kVYE WpR1z29ZNMQFfoFs6xLPQzNWiHV2Zw== =sI7w -----END PGP SIGNATURE----- --Apple-Mail=_C1092E82-99CF-498A-A2BC-DA080B343356--
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