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CLARiiON SSD disks
Hi,
I have a customer who has just purchased some brand new SSD 200GB FC drives for their Celerra with CLARiiON backend.
The EMC part number was NS-AF04-200U.
But when the drives arrived they appear to be SATA drives with the following EMC part number. 118032714 and appear as SATA drives in Unisphere and their other existing SSD drives say FC.
Can the customer extend their existing FC SSD RAID group with these SATA drives or will their be an issue?
Also will they need a hot spare for these types of drives as the existing SSD hot spare is FC?
I can't find that part number in the CLARiiON Disk OE matrix either.
The paperwork says the PN is 5049261 which is in the support matrix but says it's FC drive.
Any advice welcome as usual.
Thanks
Ian
smarti2
214 Posts
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July 18th, 2012 05:00
Rupal,
According to Flare 30 release notes it's seems you can add FC and SATA EFD drives in same RAID group so I think I have found my answer.
But no mention of whether a FC SSD drive can hot spare for a SATA EFD drive or if a SATA EFD can hot Spare for a FC EFD. Can you check this out?
I guess also the CX4 Disk OE Matrix needs updating with details about these SATA EFD drives with the part number in the photo.
Thanks
rupal1
433 Posts
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July 18th, 2012 03:00
Some Questions i would like to ask here before jumping on the answers.
1. What is the Array model and the Flare on it?
2. Is it Fast Suite/VP enabled?
3. Is this part number NS-AF04-200U for the drives you are mentioning?
4. The part number mentioned by you is 005049261is
Thanks
Rupal Rajwar
smarti2
214 Posts
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July 18th, 2012 04:00
The part number on delivery note is 5049261 but that is different to the part number on the disk itself.
On the disk it says EMC P/N 118032714.
See attached photos.
In Unisphere it says that it is a SATA II Drive. But older SSD disks say FC drives.
Am still waiting for Array model and Flare level back from customer. Will add details when I get confirmation.
smarti2
214 Posts
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July 18th, 2012 04:00
Model is CX4-480 running Flare 04.30.000.5.511.
RRR
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5.7K Posts
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July 18th, 2012 05:00
Good question. I suspect SATA EFD can replace FC EFD and the other way around as well, since both are EFD. When using spinning disks FC can replace SATA as well as the other way around. But to be sure, let's wait for an official statement from EMC here
smarti2
214 Posts
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July 18th, 2012 06:00
Thanks RRR and rupal.
I looked at this pdf before but it doesn't exactly say vice-versa for FC and SATA EFDs, it just say EFDs so as you say I guess it means all types. It's quite an old doc so may have been written before SATA EFDs came out.
I hope this is correct as there is another post of this forum which seems to contradict this. Seems that because the drives types are labelled differently then it doesn't work unless this has been fixed in a later code release! See last entry in thread.
https://community.emc.com/thread/115144?start=15&tstart=0
rupal1
433 Posts
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July 18th, 2012 06:00
Hi Smarti,
I would like to back up RRR by saying that An EFD (=SSD) can only replace failed EFDs (=SSDs), so it will not be invoked if a spinning disk fails. It can be used vice-versa for FC and SATA EFD's
Also this can be reffered to ensure the same Page 8 onwards.
http://www.emc.com/collateral/software/white-papers/c1069-clariion-global-hot-spares-ldv.pdf
rupal1
433 Posts
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July 18th, 2012 07:00
Good One Ankit. We were trying to cnvey the same and you got a table for it explaining the same. So the job is done
rupal1
433 Posts
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July 18th, 2012 07:00
RRR: Following your blogs now....very informative...Thanks !!!!
smarti2
214 Posts
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July 18th, 2012 07:00
So what about the guy on the other forum thread who found an issue beacuse the name in the type field was different, any of you EMC guys able to search for this issue on your internal knowledgebase?
RRR
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5.7K Posts
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July 18th, 2012 07:00
Ok, so my recent blog post still stands!
www.50mu.net
AnkitMehta
1.4K Posts
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July 18th, 2012 07:00
Table: Yes.
Explanation : LOL! You know why right?
I replied to your tweet, if you remember! 
RRR
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5.7K Posts
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July 18th, 2012 07:00
If in doubt, simply open a Service Request and have EMC answer it officially.
AnkitMehta
1.4K Posts
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July 18th, 2012 07:00
@RRR : No Need.
smarti below is the detail you are looking for:
Logical Unit Type
Hot Spare Type
Can the Hot Spare Swap in For the Logical Unit?
EFD
EFD
Yes
EFD
FC/SATA II/ATA
No
This will be updated in Knowledge Base Solution: emc154563 soon.
AnkitMehta
1.4K Posts
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July 18th, 2012 08:00
I have not checked that discussion yet. I will later and keep you posted.