[K12OSN] It's Good to be Back
peter at scheie.homedns.org
Wed Dec 3 15:30:34 UTC 2008
Rob Owens wrote:
> Terrell Prudé Jr. wrote:
>> j.w. thomas wrote:
>>> Since the pilot is going well so far, I decided to start looking for a
>>> permanent ltsp server so we don't have to rely on the AV PC. I found a
>>> place to buy some very impressive looking refurbished blade servers
>>> for next to nothing, and I'd like a little advice:
>>> The one I have my eye on is an IBM 1U blade with two 2.4GHz Opterons,
>>> 4G RAM, and a single 73G Ultra320 SCSI drive:
>> Actually, I'd be looking at some of those no-names. Monarch used to
>> make a good server before they finally bit the economic dust. Just
>> about all of the no-names are going to use standard
>> components--Tyan/Supermicro motherboards, Maxtor/WesternDigital/Seagate
>> hard disks, and so on. The "tier 1" manufacturers roll their own mobos,
>> and thus their boxes can be a royal PITA to upgrade down the road.
>> Monarch boxes, for example, use Tyan mobos, as do those from Penguin
> Amen! I just tried to repair a broken Dell 5150 desktop. The
> motherboard went bad. I was about to replace it when I realized that
> the expansion slots are on the opposite side of the board than every
> other board I've seen. So I had to buy a Dell board or nothing. All
> they had was a refurbished unit for $300. It takes a P4 chip and has 2
> SATA ports. It's obviously not worth $300, so the computer is junk now.
>> Don't worry so much about CPU clock speed. The bigger deal is DRAM.
>> For your projected load, any CPU's that are 1.6GHz or faster are going
>> to do a mighty fine job. I did it with dual 1.47GHz Athlon MP's several
>> years ago for 25 seats. But I did it with 4GB DRAM!
>>> I could go with a bigger drive if I went with a no-name blade, and it
>>> would be SATA instead of SCSI. SATA is nice because I can get more
>>> capacity cheap, but SCSI just seems so much better.
>> SCSI is definitely better. But you will pay for that, big time. I've
>> found SATA to be quite a good compromise between bucks/GB and
>> performance, so SATA would be my recommendation. Now, if it were PATA
>> vs SCSI, then I'd say SCSI all the way.
> Personally I'd go with SATA. I have a desktop machine acting as an LTSP
> server. It's got a dual core AMD 5000+ with 2x SATA drives in software
> RAID 1. It serves 11 Gnome sessions and 7 RDP sessions. It did this
> with 2GB of RAM until recently, when I upgraded to 4GB just because it
> was cheap. My users run basic office apps.
I second (or is it third?) the idea of choosing SATA. Use the savings to buy a
second drive to mirror (RAID 1). It will probably still be cheaper than SCSI.
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