On Wed, Sep 14, 2022 at 03:43:16PM -0400, gene heskett wrote: > On 9/14/22 14:55, Dan Ritter wrote: > > gene heskett wrote: > > > Greetings all; > > > > > > Does anyone have experience with this controller card? > > > > > > https://www.newegg.com/p/14G-04YB-00003?Item=9SIB2XHHUE3880 > > > > > > Specifically, whats my chances of moving an existing software raid10's 4 > > > Samsung 1T's to it, > > > and then attaching 4 more 2T drives to it too, to create a separate 4T > > > raid-10 for amanda? > > >
If your existing software raid is mdadm, quite good. YOu're pinning quite a lot on one card though - as mentioned, you may suffer bandwidth poverty :) > > > Without any data loss if possible? > > I don't have any experience with this one. I don't know what > > SATA chipset it is using, but there aren't many that the kernel > > doesn't already support. > > > > That said, it is a straight SATA3 board, not a RAID board, so > > there will be no difficulty in moving mdadm, btrfs or zfs RAIDs > > over to it. > > > > I would point out that you can't actually fit 16 x 3Gb/s worth > > of bandwidth over one PCIe lane; if this is v1 PCIe, you have a > > total of 250MB/s available. That's probably fine for four > > spinning disks doing backup duty. > > > > Here's a 4-port model with named PCIe v2 support and a > > recognizable SATA chipset, for slightly less money: > > > > https://www.newegg.com/syba-si-pex40064-sata-iii/p/N82E16816124064?Item=N82E16816124064 > > > > Can I make a 2nd raid 10 from two separate controllers? 2 drives on the mobo > controller and 2 on the > plugin controller? I'd think that could lead to mix-n-match problems given > udevs penchant for > shuffling drives. > mdadm should use internal blkid and shouldn't care if you shuffle drives. Mixing and matching two controllers almost certainly won't work for other reasons: there's a reason that add in cards are usually intended to support one set of RAID. > Too many options...... > > Cheers, Gene Heskett. > -- > With every good wish, as ever, Andy Cater
