[Samba] ODP: ODP: Primary DC migration / upgrade

Thu Dec 9 13:15:01 UTC 2021

Thanks for all the hints, but my toys are already ordered :)

  1.  Gigabyte GA-E6010N (SoC AMD dual core cpu of some sort)
  2.  G.Skill DDR3 1333Mhz 4GB
  3.  Patriot Burst 120GB SATAIII 2.5" SSD
  4.  tiny case + PSU

All for less than 120GBP 😄 For my needs - primary dc, radius server, maybe dhcp (still on the fence on this one) should be more than good enough.

Reason I decided against going with Pi4 is I want my servers to run Debian, and Pi isn't officially supported because of closed source firmware or something. I know there are images available, but it's ARM and I don't really have much experience with that while I have enough problems with my domain as it is on x86 computers alone 🙂 Also, geared up to a case, power supply and everything needed to connect my 10TB backup hdd will cost a good deal more than what I'd spent.

Cheers,
Chris
________________________________
Od: samba <samba-bounces at lists.samba.org> w imieniu użytkownika L.P.H. van Belle via samba <samba at lists.samba.org>
Wysłane: czwartek, 9 grudnia 2021 10:12
Do: samba at lists.samba.org <samba at lists.samba.org>
Temat: Re: [Samba] ODP: Primary DC migration / upgrade

Compaired to that Pi ..

And I forgot how old my server is, but its over 10 years old at least.
Asrock mainboard, AMD Onboard dualcore CPU E350 Max 1600MHz,
*(mostly running on 800MHz) 8GB ram (ddr3) , 1x SSD + 2x 3TB disks in mirror.
And SQL on SSD, data to mirrored disks.

hddtemp /dev/sda
/dev/sda: OCZ-VERTEX3: 128°C  << wrong temp, ignore

hdparm -tT --direct /dev/sda

/dev/sda:
 Timing O_DIRECT cached reads:   846 MB in  2.00 seconds = 422.58 MB/sec
 Timing O_DIRECT disk reads: 1114 MB in  3.01 seconds = 370.57 MB/sec

hdparm -tT --direct /dev/sdb

/dev/sdb:
 Timing O_DIRECT cached reads:   866 MB in  2.00 seconds = 433.14 MB/sec
 Timing O_DIRECT disk reads: 196 MB in  3.06 seconds =  64.07 MB/sec

/dev/md10:
 Timing O_DIRECT cached reads:   850 MB in  2.00 seconds = 424.79 MB/sec
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
 Timing O_DIRECT disk reads: 292 MB in  3.01 seconds =  96.90 MB/sec

To give an idea.
Pi4 is nice but i personaly preffer the mini pc's or industreal pc's.

Greetz,

Louis

> -----Oorspronkelijk bericht-----
> Van: samba [mailto:samba-bounces at lists.samba.org] Namens Ingo
> Asche via samba
> Verzonden: woensdag 8 december 2021 20:50
> Aan: samba at lists.samba.org
> Onderwerp: Re: [Samba] ODP: Primary DC migration / upgrade
>
> What also may be an interesting solution:
> I have moved the root partitions of my Raspi DCs to an iSCSI
> LUN on my
> Synology NAS.
>
> For my Raspi 4 I get the following values from hdparm:
> hdparm -tT --direct /dev/sda
> /dev/sda:
>   Timing O_DIRECT cached reads:   210 MB in  2.02 seconds =
> 104.19 MB/sec
>   Timing O_DIRECT disk reads: 268 MB in  3.01 seconds =  88.99
> MB/secRegards
>
> Ingo
> https://github.com/WAdama
>
> Rowland Penny via samba schrieb am 08.12.2021 um 16:32:
> > On Wed, 2021-12-08 at 15:25 +0100, Norbert Hanke via samba wrote:
> >> Hi,
> >>
> >> I/O on the Rapberry Pi is as bad or good as the SD card used for
> >> storage. Look here for useful benchmarks:
> >> https://pibenchmarks.com/fastsd/ .
> >>
> >> With the RPi 3 you can expect approx. 8 MB/s random read and 4 MB/s
> >> random write with SanDisk SD cards; with the RPi 4 it's around 11
> >> MB/s
> >> random read and 5 MB/s random write with Kingston SD cards.
> >> That's "terrible" compared to a contemporary SSD but for a Domain
> >> Controller with no too many users it works fine.
> >>
> >> You can speed up the RPi 4 by having an SSD on its USB 3 port...
> >> makes
> >> it 10 times as fast, you could even boot from it but the latter is
> >> sometimes tricky to make it work.
> > Which is why I use an ssd on one of my rpi DC's and spinning rust on
> > the other. Setting up the ssd is a bit like setting up a Unix domain
> > member, it is easy when you get the hang of it :-)
> >
> > Rowland
> >
> >
> >
>
>
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