Comments on: No RAID5 on the X4200 SAS Controller http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/ by Mark Mayo Sun, 27 Jul 2008 03:56:07 +0000 http://wordpress.org/?v=2.0.4 by: Wayne http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-214690 Wed, 30 Apr 2008 19:44:50 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-214690 I must say this all sounds awesome, but how the heck do I set this all up. I have two x4200's and I always get errors like my slices overlapping. I must say this all sounds awesome, but how the heck do I set this all up. I have two x4200’s and I always get errors like my slices overlapping.

]]> by: Andy http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-33102 Tue, 18 Jul 2006 19:52:11 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-33102 I believe LSI Logic Megaraid SAS 8300XLP (ZCR card) will give full RAID support for x4200. I believe LSI Logic Megaraid SAS 8300XLP (ZCR card) will give full RAID support for x4200.

]]> by: mark http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10711 Fri, 31 Mar 2006 02:21:24 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10711 Thx for the comments folks. Clearly Sun is imagining that anybody "serious" will attach to some network storage. Which is too bad, cause a 4 disk RAID5 would be handy on this box, especially when 146GB SAS drives arrive.. I wonder how much cost the MegaRAID SAS card would add? ux-admin: I didn't even know you could do a mirrored UFS root on x86! I use SVM mirrored boot disks on our Sparc boxes (and have for a long, long time). I'll have to try it out. Both of these boxes are going to be os-neutral app servers so they can run any OS really. Thx for the comments folks. Clearly Sun is imagining that anybody “serious” will attach to some network storage. Which is too bad, cause a 4 disk RAID5 would be handy on this box, especially when 146GB SAS drives arrive.. I wonder how much cost the MegaRAID SAS card would add?

ux-admin: I didn’t even know you could do a mirrored UFS root on x86! I use SVM mirrored boot disks on our Sparc boxes (and have for a long, long time). I’ll have to try it out. Both of these boxes are going to be os-neutral app servers so they can run any OS really.

]]> by: benr http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10709 Fri, 31 Mar 2006 00:04:58 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10709 Thats a really kick ass photo Mark. Thats a really kick ass photo Mark.

]]> by: Jason Hoffman http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10708 Thu, 30 Mar 2006 16:18:44 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10708 Yeah I had noticed that when reading the whitepaper (and during a recent obssession with sas raid controllers). A 4 disk RAID5 is extremely common but they're just using a SAS "controller" with "Integrated RAID™" (meaning RAID1 or RAID0). This is LSILogic's "low cost RAID" solution that's included in the straight controllers. Their controllers expanders is what people are using to build SAS/SATA JBODs that are wired up and hooked into a server with a real hardware RAID card. What they should have done is spend a bit more and put in the MegaRAID SAS cards (which if you feel like putting one in and rewiring the inside, they work fine). Yeah I had noticed that when reading the whitepaper (and during a recent obssession with sas raid controllers).

A 4 disk RAID5 is extremely common but they’re just using a SAS “controller” with “Integrated RAID™” (meaning RAID1 or RAID0). This is LSILogic’s “low cost RAID” solution that’s included in the straight controllers. Their controllers expanders is what people are using to build SAS/SATA JBODs that are wired up and hooked into a server with a real hardware RAID card.

What they should have done is spend a bit more and put in the MegaRAID SAS cards (which if you feel like putting one in and rewiring the inside, they work fine).

]]> by: ux-admin http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10707 Thu, 30 Mar 2006 12:06:52 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10707 RAID1 0 with SVM UFS is extremely reliable on the i86pc platform. I've subjected my Solaris i86pc workstation to a lot of very violent crashes and never lost any data on the mirrored boot disks. RAID1 0 with SVM UFS is extremely reliable on the i86pc platform.

I’ve subjected my Solaris i86pc workstation to a lot of very violent crashes and never lost any data on the mirrored boot disks.

]]> by: neil corlett http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10706 Thu, 30 Mar 2006 12:05:32 +0000 http://www.vmunix.com/mark/blog/archives/2006/03/29/no-raid5-on-the-x4200-sas-controller/#comment-10706 well, in about 3 - 4 months we will see the production release of ZFS. that won't help with bootable partitions though. there will be a bootable ZFS at some point. it looks to be considered important. mailiing lists indicate Great Things are afoot in install, patching & packaging, levered off ZFS checkpointing and other features. it's hard to know if the firmaware in LSI is more reliable than the code in solaris... well, in about 3 - 4 months we will see the production release of ZFS. that won’t help with bootable partitions though.

there will be a bootable ZFS at some point. it looks to be considered important. mailiing lists indicate Great Things are afoot in install, patching & packaging, levered off ZFS checkpointing and other features.

it’s hard to know if the firmaware in LSI is more reliable than the code in solaris…

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