[CentOS] Looking for a RAID1 box

Fri Jan 6 14:42:45 UTC 2023
Robert Heller <heller at deepsoft.com>

At Fri, 6 Jan 2023 08:39:22 +0100 CentOS mailing list <centos at centos.org> wrote:

> 
> Hi
> 
> > I have found a:
> >
> > HPE 873830-S01 ProLiant MicroServer Gen10
> >
> > for <$300 without drives.  If I can believe the seller, it has a AMD
> > Opteron X3216 Dual-core (2 Core) 1.6GHz and 8GB Installed.
> >
> > It has 4 3.5" bays. and 1? "Media" bay?
> >
> > https://www.servertechsupply.com/873830-s01/
> >
> > this could well be acceptable.  Got to find out power draw.  Looks like
> > ~40W.
> >
> > Any input on issues of OS install?  Do I go with separate OS and data
> > RAID1 sets?
> 
> I usually do
> 
> [ 1(+n) RAID1 ]->[ LVM ]->[ XFS ]
> 
> then you can use LVM to manage different filesystems as required.
> 
> /boot and/or /boot/efi should be on its own RAID1 with old metadata
> version but I'm not up to date about how the situation is exactly with
> EL9.

It depends on the version of Grub.  Grub V1 needs /boot to be RAID1 with old 
metadata (metadata at the *end* of the partition, so Grub just sees a plain 
ext2/3/4 file system to find vmlinuz and initrd).  Note: /boot/efi or the grub 
fs that Grub2 seems to want cannot be RAID, but you should duplicate the 
partitions across all of the physical disks in the raid set and arange some 
other way of "mirroring" them (eg rsync or some such -- does not need to be 
continious, since these file systems don't change continuiously).  I believe 
Grub V2 understands raid and LVM, so having a separate /boot raid set might 
not be needed.  Things like /boot/efi and grub's on fs still need to exist 
outside of the raid set and will need "manual" mirroring.

> 
> Simon
> 
> >
> > Also HPE is ClearOS.  I ran ClearOS6 for years before going with QNAP
> > turnkey.  Perhaps current ClearOS is better, but it does not handle
> > multi-domain email as I need.  Or it did not.  So I am going to install
> > my own CentOS variant and iRedMail...
> >
> > thanks
> >
> >
> > On 1/5/23 13:08, Jon LaBadie wrote:
> >> On Thu, Jan 05, 2023 at 08:18:08AM -0500, Robert Moskowitz wrote:
> >>> Proliant gen8 does NOT have UEFI.
> >>>
> >>> So I think this means I better move up to the gen10...
> >>>
> >>
> >> I'm pleased with my Gen 10+ (Plus).  Pricer than I thought
> >> you want.
> >>
> >> I like the "no power supply", just an external brick.
> >> Quiet.  I put in a PCI card to use 2 NVMe sticks, one for
> >> system and one for /home.  You can also boot from an internal
> >> usb port like a thumb drive permanently installed.
> >>
> >> Carriers for 2.5inch SSD drives work fine so with few fans,
> >> no drive motors, could be quite low power.
> >>
> >> Mine acts as email server, local caching DNS server (dnsmasq)
> >> and Amanda backup server.
> >>
> >> Jon
> >>
> >
> >
> > _______________________________________________
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> > CentOS at centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> >
> 
> 
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> 

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