> On Nov 11, 2020, at 5:38 PM, Warren Young <warren at etr-usa.com> wrote: > > On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >> >> I have yet to see software RAID that doesn't kill the performance. > > When was the last time you tried it? > > Why would you expect that a modern 8-core Intel CPU would impede I/O in any measureable way as compared to the outdated single-core 32-bit RISC CPU typically found on hardware RAID cards? These are the same CPUs, mind, that regularly crunch through TLS 1.3 on line-rate fiber Ethernet links, a much tougher task than mediating spinning disk I/O. > >> And where >> do you get cost-efficient cards that can do JBOD? > > $69, 8 SATA/SAS ports: https://www.newegg.com/p/0ZK-08UH-0GWZ1 > > Search for ?LSI JBOD? for tons more options. You may have to fiddle with the firmware to get it to stop trying to do clever RAID stuff, which lets you do smart RAID stuff like ZFS instead.I?m sure you can reflash LSI card to make it SATA or SAS HBA, or MegaRAD hardware RAID adapter. Is far as I recollect it is the same electronics board. I reflashed a couple of HBAs to make them MegaRAID boards. One thing though bothers me about LSI, now after last it was bought by Intel its future faith worries me. Intel pushed 3ware which it acquired in the same package with LSI already into oblivion? Valeri>> What has HP been thinking? > > That the hardware vs software RAID argument is over in 2020. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos
On Wed, Nov 11, 2020 at 5:47 PM Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote:> I?m sure you can reflash LSI card to make it SATA or SAS HBA, or MegaRAD > hardware RAID adapter. Is far as I recollect it is the same electronics > board. I reflashed a couple of HBAs to make them MegaRAID boards. >you can reflash SOME megaraid cards to put them in IT 'hba' mode, but not others.> > One thing though bothers me about LSI, now after last it was bought by > Intel its future faith worries me. Intel pushed 3ware which it acquired in > the same package with LSI already into oblivion? >Its Avago, formerly Aligent, and before that HP, which bought LSI, 3Ware, and then Broadcom, and renamed itself Broadcom. -- -john r pierce recycling used bits in santa cruz
> On Nov 11, 2020, at 8:07 PM, John Pierce <jhn.pierce at gmail.com> wrote: > > On Wed, Nov 11, 2020 at 5:47 PM Valeri Galtsev <galtsev at kicp.uchicago.edu> > wrote: > >> I?m sure you can reflash LSI card to make it SATA or SAS HBA, or MegaRAD >> hardware RAID adapter. Is far as I recollect it is the same electronics >> board. I reflashed a couple of HBAs to make them MegaRAID boards. >> > > you can reflash SOME megaraid cards to put them in IT 'hba' mode, but not > others. > > >> >> One thing though bothers me about LSI, now after last it was bought by >> Intel its future faith worries me. Intel pushed 3ware which it acquired in >> the same package with LSI already into oblivion? >> > > Its Avago, formerly Aligent, and before that HP, which bought LSI, 3Ware, > and then Broadcom, and renamed itself Broadcom. >I am apparently wrong, at least about LSI, it still belongs to broadcom, thanks! Long before broadcom acquired LSI and 3ware, I was awfully displeased by their WiFi chip: infamous BCM43xx. It is 32 bit chip sitting on 64 bit bus. No [sane] open source programmer will be happy to write driver for that. For ages we were using ndis wrapper?. As much as I disliked broadcom for their wireless chipset, I loved them for their ethernet one. And I recollect this was long ago before acquisition by broadcom of LSI and 3ware. Or am I wrong? Valeri> > -- > -john r pierce > recycling used bits in santa cruz > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos