Re: Hardware RAID Cards..

2005-05-31 Thread Toomas Aas

Aaron C. Meadows wrote:


I have an IBM Netfinity 5000 server I just picked up, and it has an
Adaptec AAA-131U2 (aic7815 chipset) RAID card in it, attached to 5 IBM
Branded (Seagate ST39204LC) Hot Swap Ultra160 9.1gig SCSI Harddrives.

My question is, since that chipset is unsupported for hardware RAID,
would I be better off to software RAID them, or get a different RAID card?

Contingent question is, if I should get another RAID card, what would
be a good, supported, entry level card?  This server will be purposed
as a webserver for a small webhosting company, maybe 100 sites on it.
Running Postfix,Bind,Apache2,PHP,Postgresql,etc


I'm running a Netfinity 5000 with IBM ServeRAID 3L adapter. I won't say 
it's good (it lacks any kind of online RAID management or monitoring 
from within FreeBSD AFAICT), but it works and is definitely 'entry 
level'. This machine works as a webmail/IMAP server for ~150 users, 
listserver hosting ~50 mailing lists and as incoming mail 
scanner/gateway (postfix+amavisd+spamassassin+clamav) for another mail 
server with ca 500 users. Getting it to work with FreeBSD 5.2.1 was a 
pain, but 5.3 seems to run good. Doesn't boot with ACPI enabled, though.


As to other suggestions made in this thread, they don't seem to be 
relevant for Netfinity 5000 since I can't think of a way to use ATA 
drives in this machine.

---
... When I read about the evils of drinking, I gave up reading.
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Re: Hardware RAID Cards..

2005-05-26 Thread Luke Dean


On Tue, 24 May 2005, Kirk Strauser wrote:

On Tuesday 24 May 2005 09:57, Aaron C. Meadows wrote:


My question is, since that chipset is unsupported for hardware RAID,
would I be better off to software RAID them, or get a different RAID
card?


What RAID level do you plan on using?  Mirroring shouldn't use much CPU, for
example, but parity might put a bit of a load on a hard-working system.

That's a good question, though.  Several cards are listed in the hardware
compatibility notes, but they stop short of saying "this card is completely
supported" or "stay away from this one".  What cards have people had good
luck with in practice?


I've been using a Promise FastTrak S150 TX2/plus for close to a couple of 
years now.  It supports two parallel and two serial ATA drives.  I bought 
it to support my parallel ATA drives and then I thought I'd migrate to 
SATA, but I haven't done so yet.
I've got two parallel drives in a RAID1 (mirrored) array.  This 
configuration is discouraged by the manufacturer because the drives have 
to share a cable and failure on one drive will very likely lock up the 
system, but that's not really important to me.  I'm more worried about 
hardware failure than uninterrupted uptime.


I've been using this setup since FreeBSD version 5.2, and I'm currently 
running 5.4.

The dmesg looks like:
atapci0:  port 
0x9800-0x987f,0x9400-0x940f,0x9000-0x903f mem 
0xfb00-0xfb01,0xfb027000-0xfb027fff i q 22 at device 2.0 on pci2

atapci0: failed: rid 0x20 is memory, requested 4

That little failure at the end has always been there in one form or 
another.  It doesn't seem to hinder operation as far as I can tell though.


I've only had to use the built-in maintenance utilities once to fix 
something, and that was after a really bad kernel upgrading accident.  It 
worked fine.  Overall I'm happy with this card.

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Re: Hardware RAID Cards..

2005-05-26 Thread Tony Shadwick
Just be careful on what card you choose.  Aside from simply making sure 
there are drivers for it, you also have to check on the little things.


Like, oh, being able to non-destructively grow the size of the RAID5 
array.


I bought a Promise SX6000.  I have 3 200GB drives that will be in RAID5. 
If I wish to add a 4th, it can't add it to the array.  I have to destory 
the array and start over.


Like I said, the little things. :\

Also, remember that growfs is your friend.

Tony

On Thu, 26 May 2005, Aaron C. Meadows wrote:




Kirk Strauser wrote:


On Tuesday 24 May 2005 14:48, Aaron C. Meadows wrote:


I'm planning on using RAID 5, since they are kind of small drives, and
I'm more interested in reliability and size, than speed.



Hmmm - I'd probably look toward a hardware system, then. I've had great
luck with software mirroring and striping, but those really don't put a lot
of demand on the CPU. If you're also doing database, mail, and PHP on the
same system then you'd probably want a bit of external acceleration.


Don't everyone jump on this thread all at once.. I won't be able to
read it fast enough... =)

--aaron

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Re: Hardware RAID Cards..

2005-05-25 Thread Aaron C. Meadows
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Kirk Strauser wrote:

>On Tuesday 24 May 2005 14:48, Aaron C. Meadows wrote:
>
>>I'm planning on using RAID 5, since they are kind of small drives, and
>>I'm more interested in reliability and size, than speed.
>
>
>Hmmm - I'd probably look toward a hardware system, then. I've had great
>luck with software mirroring and striping, but those really don't put a lot
>of demand on the CPU. If you're also doing database, mail, and PHP on the
>same system then you'd probably want a bit of external acceleration.

Don't everyone jump on this thread all at once.. I won't be able to
read it fast enough... =)

- --aaron
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Re: Hardware RAID Cards..

2005-05-24 Thread Kirk Strauser
On Tuesday 24 May 2005 14:48, Aaron C. Meadows wrote:

> I'm planning on using RAID 5, since they are kind of small drives, and
> I'm more interested in reliability and size, than speed.

Hmmm - I'd probably look toward a hardware system, then.  I've had great 
luck with software mirroring and striping, but those really don't put a lot 
of demand on the CPU.  If you're also doing database, mail, and PHP on the 
same system then you'd probably want a bit of external acceleration.
-- 
Kirk Strauser


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Re: Hardware RAID Cards..

2005-05-24 Thread Aaron C. Meadows
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I'm planning on using RAID 5, since they are kind of small drives, and
I'm more interested in reliability and size, than speed.

Kirk Strauser wrote:

>On Tuesday 24 May 2005 09:57, Aaron C. Meadows wrote:
>
>>My question is, since that chipset is unsupported for hardware RAID,
>>would I be better off to software RAID them, or get a different RAID
>>card?
>
>
>What RAID level do you plan on using? Mirroring shouldn't use much CPU, for
>example, but parity might put a bit of a load on a hard-working system.
>
>That's a good question, though. Several cards are listed in the hardware
>compatibility notes, but they stop short of saying "this card is completely
>supported" or "stay away from this one". What cards have people had good
>luck with in practice?
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Re: Hardware RAID Cards..

2005-05-24 Thread Kirk Strauser
On Tuesday 24 May 2005 09:57, Aaron C. Meadows wrote:

> My question is, since that chipset is unsupported for hardware RAID,
> would I be better off to software RAID them, or get a different RAID
> card?

What RAID level do you plan on using?  Mirroring shouldn't use much CPU, for 
example, but parity might put a bit of a load on a hard-working system.

That's a good question, though.  Several cards are listed in the hardware 
compatibility notes, but they stop short of saying "this card is completely 
supported" or "stay away from this one".  What cards have people had good 
luck with in practice?
-- 
Kirk Strauser


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Hardware RAID Cards..

2005-05-24 Thread Aaron C. Meadows
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Hash: SHA1
 
Hi there.

I have an IBM Netfinity 5000 server I just picked up, and it has an
Adaptec AAA-131U2 (aic7815 chipset) RAID card in it, attached to 5 IBM
Branded (Seagate ST39204LC) Hot Swap Ultra160 9.1gig SCSI Harddrives.

My question is, since that chipset is unsupported for hardware RAID,
would I be better off to software RAID them, or get a different RAID card?

Contingent question is, if I should get another RAID card, what would
be a good, supported, entry level card?  This server will be purposed
as a webserver for a small webhosting company, maybe 100 sites on it.
Running Postfix,Bind,Apache2,PHP,Postgresql,etc

Thanks for the help!

- --Aaron
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