topic Re: Is there an equivalent to A5856A ? in Disk

Is there an equivalent to A5856A ?

someone_4 — Thu, 31 Jul 2003 14:36:40 GMT

Hello,

We just got a 2300. And we would like to use a raid 10 configuration. I have found out that we need an A5856A ( RAID 4Si, PCI 4 port Ultra2 SCSI RAID ) card. I priced it though HP and they have a hefty price tag on it. I was wondering if anyone knew of an equivalent to the card or maybe somewhere i can get a better price.

Thanks
Richard

Re: Is there an equivalent to A5856A ?

Zeev Schultz — Thu, 31 Jul 2003 14:44:29 GMT

Richard,
Just configured ds2300 a day ago with that card :).Anyway,I'm not sure that 4 ports (that means 4 physical arrays x 14 or some drives) card wouldn't be costy.After all,it's actually
a replacement of disk array's controller.

My opinion though :)

Re: Is there an equivalent to A5856A ?

someone_4 — Thu, 31 Jul 2003 14:46:56 GMT

hi

The issue here is I need to make sure this is the card I need. I dont want overkill or buy something that will do the job and then some. This is only going to be used to hook up one raid and no more. If there is another cheaper card that I can use that will do what I need then that is what I am looking for.

Richard

Re: Is there an equivalent to A5856A ?

Steven E. Protter — Thu, 31 Jul 2003 14:50:12 GMT

Sticking non-HP cards in HP-9000 servers is not a really good idea.

If you have a support contract and something goes wrong they can refuse to work on the box.

You might be able to get a better price getting a few HP parts resellers to bid the job. I've gotten substantial discounts on parts by finding vendors that had a few left over, and had no trouble putting them on service contracts later.

I'd be happy to give you some contacts.

SEP

Re: Is there an equivalent to A5856A ?

Mike Fisher_5 — Thu, 31 Jul 2003 14:54:47 GMT

Richard

What model server are you connecting to?

Mike

Re: Is there an equivalent to A5856A ?

someone_4 — Thu, 31 Jul 2003 14:56:14 GMT

I dont want to to with a NON hp solution.
A good point was brought up ..
in the description it says 4 ports. Does that mean I can hook up 4 raids to it? If that is the case i dont need 4 ports. I just need one.

Steven the contacts would be great.
my email address is:

richardlATnetworkipDOTnet

Richard

Re: Is there an equivalent to A5856A ?

someone_4 — Thu, 31 Jul 2003 14:56:40 GMT

This will be connectiong to an L2000.

Richard

Re: Is there an equivalent to A5856A ?

Mike Fisher_5 — Thu, 31 Jul 2003 15:16:18 GMT

Richard

For hardware RAID you're gonna need the 4Si
I've emailed you some good stuff

Guinness calls
Have a good un
Mike

Re: Is there an equivalent to A5856A ?

Tim D Fulford — Fri, 01 Aug 2003 08:43:30 GMT

Hi

IF you just want raid1+0 i.e. striping & mirroring LVM offers something quite similar, no special cards. Use Extent Based Mirrored Stripes.

What is actually happening is that each disk in a Physical Volume Group (PVG) round robbins the extents in an LV, & you can mirror this functionality on a second PVG

I'm @home currently so the info will not be a complete as I would like.
1 - create an /etc/lvmpvg file with two PVGs say "primary" & "mirror". do man lvmpvg for the format of this file

2 - Create the LVs
# lvcreate -n -L -D y -s g -m 1
the -D y -s g is the striping distributed stripe using PVG groups
the -m 1 is the mirror bit

Make sure you do the mirroring & striping in ONE go otehrwise you have to wait for the extents to synchronise if you miss off the "-m 1"

Regards

Tim

Re: Is there an equivalent to A5856A ?

Oleg Khoroshylov — Fri, 01 Aug 2003 08:59:34 GMT

Richard,

What about MirrorDisk/UX ? It will be much cheaper, though it's software RAID

BR,
OK