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February 3rd, 2009 16:00

NS502 capacity question

Ihac - currrently this NS502 has (25) usuable 300 gb FC drives on it.
they want to upgrade and are under the impression that as long as the use ATA drives, that they can go to 32TB.
From what I read its 16tb per active DM. since they are configured in an active/passive config. Am I correct in assuming that they are limited to 16TB usable?

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February 4th, 2009 03:00

forgot the attachment in the previous post :-)

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11 Legend

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February 3rd, 2009 16:00

whatever limit is listed for NS502 is for all disk types and uses (cifs/nfs/iSCSI).

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February 3rd, 2009 16:00

here is where my confusion lies;

NS500 storage
capacity
You can connect as many as seven DAE2s or DAE2Ps to the server¿s
Fibre Channel backend loops to form a large disk-storage system.
Each backend loop supports up to 60 disk modules. So an NS500
server with two backend loops supports up to 120 disk modules. For
a NAS configuration, disks in a DAE2 enclosure must have the same
capacity and speed.
The maximum storage capacity of an NS500 series server equals one
of the following (whichever is the smallest):
◆ The total storage capacity of 120 disk modules
◆ 10 Terabytes per active Data Mover for Fibre Channel drives
◆ 16 Terabytes per active Data Mover when Fibre Channel and ATA
drives are used

674 Posts

February 3rd, 2009 23:00

Yes, there is a 10 TB FC Limit per Datamover, but the FC+ATA Limit per active Data Mover is depending on the NAS Code.
For 5.5 it is 16 TB (FC max 10 TB)
For 5.6 it is 32 TB (FC max 10 TB)

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February 3rd, 2009 23:00

Peter,

where are these numbers published? I had to open a ticket to get these numbers on my NS80 and was told that these are only published in EMC confidential documents. For NS80, NSX he did mention that capacity limit is one number regardless if it's ATA, FC or combination.

674 Posts

February 4th, 2009 02:00

dynamox, these numbers are also published in the Release Notes of the NAS Codes, see Table 1a: Celerra Capacity Limits ¿ NS Series

6 Operator

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February 4th, 2009 03:00

see attached for the table from the 5.6 release notes that Peter is referring to
You can find them on Powerlink in the section

Home > Support > Technical Documentation and Advisories > Hardware/Platforms Documentation > Celerra Network Server > Release Notes

Note that these arent "hard" limits - you can work with your EMC technical contact to get higher capacities approved through an RPQ process (if your workload permits it)

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February 4th, 2009 04:00

Thank you Peter and Rainer.

6 Operator

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February 4th, 2009 07:00

Wow - this is really impressive "dynamox"- you posted this message at 1:30 AM CST !!! Your enthusiasm in the forums is really commendable and motivation for us :)

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February 4th, 2009 07:00

getting full night sleep is over-rated :) ...actually working on DMX2K to DMX4 migration ..so a lot of SRDF work that has to be done at night :(

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February 4th, 2009 07:00

Hmm .. good for others that your help and advice is available 24 hrs :) - wish you all the best for the migration work and hope you will have a full night sleep soon :)
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