[SunHELP] V240 RAID

[David Strom]

I only get the digest, so I hope this isn't too late to help...

Well, Mike, I think you could do this, but I can't say if you'll love it:

The old Disksuite mechanism (now Volume Manager, iirc) for "software" 
RAID uses partitions, not disks.  So, you could put 4 x 146 GB disks in 
your V240.  Say you use 46GB for OS & swap  and have at least 1 
partition left over (better to have 2, 2nd small one, ~100MB for metadb) 
of 100GB.  Create same size 100GB partitions on the 3rd & 4th disk, and 
voila!  You have a 4 x 100GB RAID-5 metadevice = ~300GB useable.  You 
then have the 46GB space left on the 3rd & 4th disks for whatever you 
want... 3rd OS mirror?  Or another Raid-1 46GB space with better write 
performance than RAID-5 for database logs or any other write-intensive 
use.  You can create a soft parition on the RAID-5 metadevice, in case 
you want to be able to carve it up, that would give you an expandable 
solution where you can allocate 200GB to start, and grow later if you 
haven't otherwise used the space.

HTH, YMMV.
--
David Strom

sunhelp-request at sunhelp.org wrote:

>    7. V240 RAID (Mike)
>    8. Re: V240 RAID (Monique Marais)
>    9. Re: V240 RAID (Mike)
>   10. Re: V240 RAID (Daniel Nuno)
>   11. Re: V240 RAID (Tony Raza)
> 
> 
> ------------------------------
> 
> Message: 10
> Date: Wed, 6 Dec 2006 09:00:44 -0600
> From: "Daniel Nuno" <daniel.nuno at gmail.com>
> Subject: Re: [SunHELP] V240 RAID
> To: "The SunHELP List" <sunhelp at sunhelp.org>
> Message-ID:
> 	<76fd01e80612060700i7f11e54bm24d2b5139abb0241 at mail.gmail.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> Mike,
>  You can't configure RAID 5 using the boot disks, only RAID 1.
> 
> So if you have a V240, 2 disks should be a RAID 1 to support the OS, and you
> have 2 left. You can use RAID 1 as well, but the biggest size is of a disk
> is 146 GB.
> 
> You can use a V240 connected to an old D1000, and using SVM you can
> configure your RAID5. Don't forget to buy the SCSI Differential HBA.
> 
> V240 + SCSI Differencial HBA PCI + D1000 + SVM
> 
> The Ultra 450 is quite old and there are many versions. The basic version
> only contains 4 slots for disks.
> You have to buy the expansion controllers, so is the same as your V240.
> 
> Why don't you try with a V880? they always came with 6 disks.
> 
> Regards,
> Daniel Nuno
> 
> 
> 
> On 12/6/06, Mike <xa87n at yahoo.com> wrote:
> 
>>Thanks Monique. It says on the specs that V240 has 4 drives, however
>>I've never used one, only V210 from the V2xy series.
>>
>>V440 is nice, but I'm afraid it is a bit too expensive. I'll have a
>>look at Ultra45. There is no external storage, so 200GB needs to fit on
>>internal drives.
>>
>>Mike
>>
>>--- Monique Marais <Monique.Marais at alindigo.com> wrote:
>>
>>
>>>Hey Mike,
>>>
>>>V240 only has two internal disks.  You need atleast three disks to
>>>configure
>>>Raid5. Unless you have external storage (3310 JBOD) attached and use
>>>SVM.
>>>
>>>Either stripe with no redundancy, or use standard mirroring.
>>>
>>>V440 is capable of Raid5 configuring. Or, have a look at the Ultra45.
>>>
>>>Regards,
>>>
>>>Monique
>>>
>>>-----Original Message-----
>>>From: Mike [mailto:xa87n at yahoo.com]
>>>Sent: 06 December 2006 03:25 PM
>>>To: sunhelp at sunhelp.org
>>>Subject: [SunHELP] V240 RAID
>>>
>>>Hello,
>>>
>>>I'm trying to put together a server with RAID5 and 200GB of disk.
>>>Does
>>>anyone know if V240 can do RAID5? Are there any other (not very
>>>expensive) models that can do it? Is it better to get something older
>>>+
>>>RAID adapter?
>>>Thanks for any suggestions.
>>>
>>>Mike
>>>
>>>
>>>
>>>
>>>
>>
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