From owner-freebsd-scsi@freebsd.org Mon Jan 14 14:10:54 2019 Return-Path: Delivered-To: freebsd-scsi@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2619214A0EB3 for ; Mon, 14 Jan 2019 14:10:54 +0000 (UTC) (envelope-from ken@kdm.org) Received: from mithlond.kdm.org (mithlond.kdm.org [96.89.93.250]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mithlond.kdm.org", Issuer "mithlond.kdm.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id E3D7489D4E for ; Mon, 14 Jan 2019 14:10:51 +0000 (UTC) (envelope-from ken@kdm.org) Received: from [10.0.0.29] (kenmbpspectra.int.kdm.org [10.0.0.29]) (authenticated bits=0) by mithlond.kdm.org (8.15.2/8.14.9) with ESMTPSA id x0EEAiux074534 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 14 Jan 2019 09:10:44 -0500 (EST) (envelope-from ken@kdm.org) From: Ken Merry Message-Id: <36153F07-0FE2-4DD5-9BD9-EBD18F88FC10@kdm.org> Mime-Version: 1.0 (Mac OS X Mail 12.2 \(3445.102.3\)) Subject: Re: Looking for PCI express SCSI diff card recommendations Date: Mon, 14 Jan 2019 09:10:43 -0500 In-Reply-To: <9C8F819A-7B8F-46C8-90E7-BDD16C785BD8@samsco.org> Cc: freebsd-scsi@freebsd.org To: Scott Long , Dan Langille References: <9D2ED808-CE43-41BE-9698-45F0D85843A7@langille.org> <9C8F819A-7B8F-46C8-90E7-BDD16C785BD8@samsco.org> X-Mailer: Apple Mail (2.3445.102.3) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.4.3 (mithlond.kdm.org [96.89.93.250]); Mon, 14 Jan 2019 09:10:44 -0500 (EST) X-Rspamd-Queue-Id: E3D7489D4E X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of ken@kdm.org designates 96.89.93.250 as permitted sender) smtp.mailfrom=ken@kdm.org X-Spamd-Result: default: False [-2.21 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+a:mithlond.kdm.org]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; DMARC_NA(0.00)[kdm.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TO_DN_SOME(0.00)[]; URI_COUNT_ODD(1.00)[11]; TO_MATCH_ENVRCPT_SOME(0.00)[]; MX_GOOD(-0.01)[mail.scsiguy.com,mithlond.kdm.org]; NEURAL_HAM_SHORT(-0.39)[-0.390,0]; IP_SCORE(-1.01)[ipnet: 96.64.0.0/11(-4.28), asn: 7922(-0.69), country: US(-0.08)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; ASN(0.00)[asn:7922, ipnet:96.64.0.0/11, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Jan 2019 14:10:54 -0000 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. 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. 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. 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. If you want to use LTFS on FreeBSD, I ported IBM=E2=80=99s LTFS to = FreeBSD: https://github.com/LinearTapeFileSystem/ltfs = 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. 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. 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. 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. Ken =E2=80=94=20 Ken Merry ken@FreeBSD.ORG > On Jan 13, 2019, at 5:27 PM, Scott Long 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 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 = >>=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 >> --=20 >> Dan Langille - BSDCan / PGCon >> 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 mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-scsi > To unsubscribe, send any mail to = "freebsd-scsi-unsubscribe@freebsd.org"