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тАО02-04-2010 03:36 PM
тАО02-04-2010 03:36 PM
The Newbee's Back With Some Blade and SAN Questions
The other issue coming up has to do with tape blades and storage blades. From reading the documentation, it looks like a blade server can support only one storage blade or one tape blade. Looks like extending the bus by means of daisy chaining isn't possible. Is this correct? The problem with this is, if I want to add a second tape drive, I lose 2 blade slots, it costs an extra 3K for another server and the second one isn't local. And the same thing happens when you try to increase local disk storage beyond the two in the system enclosure and the 6 in the storage blade. Are these limitations correct?
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тАО02-04-2010 07:14 PM
тАО02-04-2010 07:14 PM
Re: The Newbee's Back With Some Blade and SAN Questions
>>Looks like extending the bus by means of daisy chaining isn't possible. Is this correct?
Correct. Only one expansion blade (either tape or storage) can attach to a server blade. No "daisy chaining", no way to attach two directly to a single server blade.
If your goal is just a way to get more storage *inside* a single enclosure, you could use an X1800sb or a LeftHand VSA to connect the drive space on multiple blade servers together to present a single iSCSI-based SAN to other blade servers. That could yield more drive capacity than than a single server blade + SB40c could have. Doing something external to the enclosure would probably be simpler, though.
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тАО02-05-2010 05:29 AM
тАО02-05-2010 05:29 AM
Re: The Newbee's Back With Some Blade and SAN Questions
Q1. Which Mezz Slot is your Mezzanine card in??
Q2. Which interconnect bay is your AJ820A in?
Dave.
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тАО02-05-2010 01:08 PM
тАО02-05-2010 01:08 PM
Re: The Newbee's Back With Some Blade and SAN Questions
The AJ820A is installed in the C3000 in Interconnect Bay 3 and the QMH2426 is installed in Mezz Slot 2. It's type II and it's in the left rear section of the BL680c G5.
Dennis
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тАО02-06-2010 02:16 PM
тАО02-06-2010 02:16 PM
Re: The Newbee's Back With Some Blade and SAN Questions
With the HBA in Mezz 2, then only port 1 maps to IC Bay 3, (port 2 maps to IC Bay 4).
The only option that I can see would be to put the HBA on Mezz 1, and the SAN switch in IC Bay 2. From Mezz 1, both ports map to IC Bay 2.
I know there is some relevence to the "Type II" thing, but I'll be honest, I don't remember exactly what that is.
If you have already considered this option then I apologise.
Dave.
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тАО02-09-2010 01:40 PM
тАО02-09-2010 01:40 PM
Re: The Newbee's Back With Some Blade and SAN Questions
The QMH2462 (the 4Gb FC HBA) is a "Type I" card. It will go into any mezzanine slot.
Of the 3 mezz slots on BL680c G5, slot 1 can *only* use a "Type I" card. The other two mezz slots can take either a "Type I" card or "Type II" card.
A Type II card is physically slightly larger, and can consume slightly more power, than a Type I card.
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тАО02-17-2010 01:43 PM
тАО02-17-2010 01:43 PM