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[158.247.72.95]) by smtp.gmail.com with ESMTPSA id m11sm1676133qtn.81.2021.06.22.06.56.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Jun 2021 06:56:43 -0700 (PDT) Subject: Re: Question: RAID cabinet for home use (vs "Backplane/Cage/Mobile Rack"?) To: Roger Heflin Cc: mdraid References: <03ca5974-60ed-d596-7eff-cac44f4a6d62@gmail.com> From: Bill Hudacek Message-ID: Date: Tue, 22 Jun 2021 09:56:42 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org Roger Heflin wrote on 6/21/21 8:03 PM: > I have been using the 4 drives in to 3x5.25 bays and have a cheap=20 10x5.25 bay case..=C2=A0 These 4 into 3 bay devices are all direct sata=20 connections with minimal electronics and you need 4 sata connections,=20 but less than 4 power connectors.=C2=A0 They are hot swap and usually hav= e=20 disk activity lights and usually have fans. > > The brand I have used in the past is IcyDock. > > There are few components to go wrong so they are really direct sata=20 and/or sas connections. with very limited electronics to go wrong, but=20 you need one port per drive. > I looked at that '4 into 3 bay device' - seems to be intended for=20 internal use, not a cabinet sitting on a shelf.=C2=A0 And - I need five=20 bays to be able to just move my drives rather than redesign my storage. What is your 'cheap 10x5.25 bay case'? My drives are 3.5 but that=20 manufacturer may offer either drive adapters or a 3.5-based unit. I found another product from Icy Dock -=20 https://www.amazon.com/ICY-DOCK-MB975SP-B-R1-Tray-less/dp/B06X9P4BYL?th=3D= 1=20 - but that requires an SATA connection for *each drive* (rather than=20 port multiplier). This is more a backplane extender than a RAID cabinet. I could of course replace the controller that I added-on so long ago -=20 the card in the computer is a pedestrian "Marvell 88SE9123 PCIe SATA=20 6.0 Gb/s controller" (but it has port multiplier, so 1 eSATA=20 connection serves all 5 drives - which is pretty nice). I've worked with 'octopus' SCSI controllers (in a data center, long=20 time ago) with 8 cables coming out the back. I'm not sure what I would=20 be able to find for a SATA external cabinet like the 'FlexCage' above.=20 Does anyone have any controller suggestions for the FlexCage? With 5=20 or more external 'pure' SATA connectors/ports instead of eSATA? I'll poke around a bit more. Thanks for the tip - I'd never heard of=20 Icy Dock or a '4 into 3 bay device' (what an awkward phrase :-) . /Bill > On Mon, Jun 21, 2021 at 4:12 PM Bill Hudacek=20 wrote: > >=C2=A0=C2=A0=C2=A0=C2=A0 My 2021 Sans Digital TR5UT+B held 5 SATA disks= =2E I had an eSATA >=C2=A0=C2=A0=C2=A0=C2=A0 connection to the host box. It went belly-up a= few weeks ago. > >=C2=A0=C2=A0=C2=A0=C2=A0 After some careful searching, a good replaceme= nt seemed to be=20 the Oyen >=C2=A0=C2=A0=C2=A0=C2=A0 Digital Mobius 3R5-EB3-M. Found it for about $= 300USD. > >=C2=A0=C2=A0=C2=A0=C2=A0 It was plug-and-play replace. Drives were bein= g addressed by=20 UUID in >=C2=A0=C2=A0=C2=A0=C2=A0 Fedora so no issues at all. It came right up. > >=C2=A0=C2=A0=C2=A0=C2=A0 However, smart reporting looks horrible even c= ompared to the=20 TR5UT+B >=C2=A0=C2=A0=C2=A0=C2=A0 (which had its own issues). > >=C2=A0=C2=A0=C2=A0=C2=A0 Here's what the TR5UT+B (old cabinet) reported= for one disk in the >=C2=A0=C2=A0=C2=A0=C2=A0 unit (just the header section of smartctl -a):= > >=C2=A0=C2=A0=C2=A0=C2=A0 =3D=3D=3D START OF INFORMATION SECTION =3D=3D=3D= >=C2=A0=C2=A0=C2=A0=C2=A0 Model Family:=C2=A0=C2=A0=C2=A0=C2=A0 Western = Digital Red >=C2=A0=C2=A0=C2=A0=C2=A0 Device Model:=C2=A0=C2=A0=C2=A0=C2=A0 WDC WD20= EFRX-68EUZN0 >=C2=A0=C2=A0=C2=A0=C2=A0 Serial Number:=C2=A0=C2=A0=C2=A0 WD-WCC4M6HX8X= CR >=C2=A0=C2=A0=C2=A0=C2=A0 Firmware Version: 0957 >=C2=A0=C2=A0=C2=A0=C2=A0 User Capacity:=C2=A0=C2=A0=C2=A0 2,000,398,934= ,016 bytes [2.00 TB] >=C2=A0=C2=A0=C2=A0=C2=A0 Sector Size:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 512= bytes logical/physical >=C2=A0=C2=A0=C2=A0=C2=A0 Device is:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 In smartctl database [for details use: -P show] > >=C2=A0=C2=A0=C2=A0=C2=A0 Here's what the Mobius reports now for the sam= e disk: > >=C2=A0=C2=A0=C2=A0=C2=A0 =3D=3D=3D START OF INFORMATION SECTION =3D=3D=3D= >=C2=A0=C2=A0=C2=A0=C2=A0 Device Model:=C2=A0=C2=A0=C2=A0=C2=A0 Mobius=C2= =A0 DISK1 >=C2=A0=C2=A0=C2=A0=C2=A0 Serial Number:=C2=A0=C2=A0=C2=A0 WD-WCC4M6HX8X= CR >=C2=A0=C2=A0=C2=A0=C2=A0 Firmware Version: 0962 >=C2=A0=C2=A0=C2=A0=C2=A0 User Capacity:=C2=A0=C2=A0=C2=A0 2,000,398,934= ,016 bytes [2.00 TB] >=C2=A0=C2=A0=C2=A0=C2=A0 Sector Size:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 512= bytes logical/physical >=C2=A0=C2=A0=C2=A0=C2=A0 Device is:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 Not in smartctl database [for details use: -P=20 showall] > >=C2=A0=C2=A0=C2=A0=C2=A0 The disk model is gone. The firmware version i= s wrong (cabinet=20 instead >=C2=A0=C2=A0=C2=A0=C2=A0 of disk?!). I imagine firmware updates are imp= ossible here. > >=C2=A0=C2=A0=C2=A0=C2=A0 The rest of it is unimpressive, too. No SCT (T= LER) at all - not=20 just >=C2=A0=C2=A0=C2=A0=C2=A0 ERC, but SCT Status, SCT Feature Control, SCT = Data Table are all >=C2=A0=C2=A0=C2=A0=C2=A0 missing too. > >=C2=A0=C2=A0=C2=A0=C2=A0 All the disks in the cabinet are WD20EFRX-68EU= ZN0. So I believe=20 they >=C2=A0=C2=A0=C2=A0=C2=A0 have SCT/TLER. > >=C2=A0=C2=A0=C2=A0=C2=A0 What RAID cabinets would be a better alternati= ve? I have 5=20 drives but >=C2=A0=C2=A0=C2=A0=C2=A0 an 8-bay cabinet would work too. > >=C2=A0=C2=A0=C2=A0=C2=A0 Obviously, SMART pass-through would be 'nice'.= But so would SCT=20 (ERC). > >=C2=A0=C2=A0=C2=A0=C2=A0 -- > >=C2=A0=C2=A0=C2=A0=C2=A0 Kind Regards, > >=C2=A0=C2=A0=C2=A0=C2=A0 Bill Hudacek >=C2=A0=C2=A0=C2=A0=C2=A0 IT Architect >=C2=A0=C2=A0=C2=A0=C2=A0 Currently Un-Attached, free & independent > >