2nd Xserve RAID + Xsan = ?

So here's the situation...
There's an existing Xserve RAID shared via Xsan... Works great, except we're running out of storage space.
So we've purchased a second Xserve RAID, I've set it up in the RAID Admin and it seems to be all happy and good...
I then go to Xsan Admin and to the Luns tab, but the raid is no where to be found...
What do I need to do to make sure the new RAID can be added to the Xsan.
Thanks Much
Tommy

Definitely check the zoning on the fibre channel switch. In general it's a good idea to create a zone that has ONLY the computers and the storage you care about included. Which would mean if you add additional computers they can't see your SAN storage if you don't want them to.
This also means you need to broaden the zone and add 2 more ports when you add the second Xserve RAID, of course.

Similar Messages

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    Were on the same boat but more like a life jacket
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    HELP!!!!
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    First let me apologize for not responding earlier to your response, I tend to get busy and then forget to check back here.
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    Here is the problem.
    The directory for the xserve raids keep getting corrup, and I use disc warrior to rebuild them. Is there a way to keep the directories from getting corrupt? I am a few pieces of equipment before I can build an Xsan as that is the ultimate goal, but until then, I just need to be able to have the raids funciton as storage without having to rebuild the directories all of the time.
    Anybody have any suggestions?
    Thanks
    Todd Buhmiller
    Widescreen Media
    Calgary, Alberta Canada
    Tod Kuykendall
    Posts: 1,237
    From: San Diego
    Registered: Oct 11, 2000
    Re: Xserve Raid Mounts, Corrupt Directory tired of rebuilding directory
    Posted: Jun 27, 2010 1:25 PM in response to: Todd Buhmiller
    Are multiple computers accessing the same data on the RAID at the same time?
    If so then NO. This is the source of your data corruption and I'm surprised if you were able to get all your data back every time if this is how you've been running your system. Each fibre channel assumes it has full and sole control of every volume it has mounted, no data arbitration is practiced and data corruption will occur if this assumption is wrong.
    The only way this set-up will work is to use partitions or LUN masks so the volumes are accessed by one computer at any time. As long as one computer relinquishes control before another mounts it you will dodge arbitration issues but this is a dangerous game. If you screw up and mount an already mounted volume - and there is no easy way to tell if a volume is mounted - corruption will then occur. Sharing data simultaneous at fibre speeds is what XSAN does and to do this you need it.
    HTH,
    =Tod
    Intel Xserve, G5 XServes, XRAID, Promise

    +The xserve raids will mount automatically to any computer that I connect the qlogic fc switch to+
    This is source of the corruption to your data. Any computer that attaches to a drive/partition via fibre channel assumes that it alone is in control of the drive and data corruption is inevitable.
    +Is that the issue, should I disconnect the xserve from the fc switch and leave it connected via ethernet?+
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    it is not showing as available in the mounted RAID icon on the desktop
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    Hi All,
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    Are the computers using the RAID as directly attached storage or are they using XSAN (or another product) to access the storage as a SAN?
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  • Xserve RAID - Connecting 2 hosts

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    +1. Am I correct in assuming that if I put a fibre channel card in the new machine and connect it to 1 of the RAID controllers, and have the original machine connected to the other RAID controller, that both machines will only see 1 array each and won't be able to share data?+
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    +2. Do I need a fibre channel switch or hub to do what I'd like to do? If so, does anyone have any suggestions for a model that is compatible with the Xserve RAID?+
    There are many and Apple sells several on their site. But -
    +*DO NOT DO WHAT YOU'RE LOOKING TO DO*+
    Fibre channel access to a volume assumes complete control of the volume. If you attach more than one fibre channel host to a volume they will both act without any data arbitration and *data loss and corruption will occur*. Not may occur but will occur and much crying will ensue.
    To correctly attach more than one machine to data over fibre channel requires an over-arching system to do data arbitration. The usual case in this situation is Apple's XSAN but diving into XSAN is an involved and (usually) expensive project and should not be undertaken lightly.
    I suggest you find out what the ultimate goal is look for a different solution.
    Hope my warning is clear enough,
    =Tod

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    Here we have a Xsan setup with one Xserve RAID and 3 Xserves.  We have a Qlogic Sandbox 5200 fiber channel switch. We also have a dedicated ethernet switch for the metadata network and a other switch for "regular" IP communication between Xserve and our firewall.
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    I'm capturing in 10-bit uncompressed standard definition 720x480. I just upgraded one side of my Apple XRAID, (connected directly via fibre channel) with seven, 750GB hard drives from Apple, drives designed for the XRAID, (came with there own sleds.)
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    I'm capturing in 10-bit to avoid loss of quality from analog sources like BetaCam SP as well as line 21 must be part of the captured file, because it contains line 21 for captioning. Eight bit has a banding issue that I can't have in the final product and 10-bit doesn't have this issue.
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    I have never had any problem capturing till I installed these new drives from Apple.
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  • Help on Setting up Xserve Raid

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  • What to do with our Xserve RAID, moving forward - Need Advice.

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    +I'd really like to move us into a SAN system, but am curious about others' perspectives on populating our Xserve RAID with 1 TB or greater drives now or get a different RAID setup.+
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    =Tod

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