Hi,
I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones.
My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space?
Thanks
This won't work. ONTAP will downsize the larger disk to the size of the rest of the drives and will never resize them until you blow away the vol/aggr and start over.
-- Adam Fox adamfox@netapp.com
-----Original Message----- From: Bryano [mailto:tgbryano@gmail.com] Sent: Wednesday, August 08, 2007 2:48 PM To: toasters@mathworks.com Subject: Increasing the size of disks in an existing array
Hi,
I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones.
My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space?
Thanks -- View this message in context: http://www.nabble.com/Increasing-the-size-of-disks-in-an-existing-array- tf4231931.html#a12039894 Sent from the Network Appliance - Toasters mailing list archive at Nabble.com.
The 300G disk will be right-sized to the usable space of a 72G disk (68G?) and the extra space from the larger disk will be lost/unusable.
http://now.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=164167
Do you have a shelf of 300G disks or were you just planning on buying a set of 300G disks to migrate into the shelf enclosure that the 72G disks are in?
If you have a shelf of 300G disks, attach it with a new loop and snapmirror or ndmpcopy migrate the data to the new shelf. Then detach the 72G shelf. Of course that is trickier with the 270's since the head IS a shelf.
On 8/8/07 1:47 PM, "Bryano" tgbryano@gmail.com wrote:
Hi,
I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones.
My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space?
Thanks
Mike Partyka . Technical Engineer [ p. 612 .669 .8268 f. 952 .471 .0409 e. mpartyka@acmn.com ]
Thanks for the input guys, it was kind of what i was expecting to hear but not what i wanted to hear :-((
That said I have informed my boss and he has agreed to purchase a new shelf which will get us out of trouble for the moment on the FAS 940 which is very low on disks, I take it to add the shelf i will have to power down the filer?
Bryano wrote:
Hi,
I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones.
My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space?
Thanks
You should be able to hot-add it. Grab the DS-14Mk2 shelf manual and I think the procedure is in Appendix A. The only gotcha is all of the disks on the new shelf must be spares (i.e. no vols/aggrs).
-- Adam Fox adamfox@netapp.com
________________________________
From: Bryano [mailto:tgbryano@gmail.com] Sent: Friday, August 10, 2007 2:57 PM To: toasters@mathworks.com Subject: Re: Increasing the size of disks in an existing array
Thanks for the input guys, it was kind of what i was expecting to hear but not what i wanted to hear http://www.nabble.com/images/smiley/smiley_sad.gif That said I have informed my boss and he has agreed to purchase a new shelf which will get us out of trouble for the moment on the FAS 940 which is very low on disks, I take it to add the shelf i will have to power down the filer?
Bryano wrote: Hi, I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones. My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space? Thanks
________________________________
View this message in context: Re: Increasing the size of disks in an existing array http://www.nabble.com/Increasing-the-size-of-disks-in-an-existing-array -tf4231931.html#a12097120 Sent from the Network Appliance - Toasters mailing list archive http://www.nabble.com/Network-Appliance---Toasters-f2062.html at Nabble.com.
Only if your connecting a new loop. If your daisy chaining off another shelf you can probably hot-add it.
Sent via BlackBerry from T-Mobile
-----Original Message----- From: Bryano tgbryano@gmail.com
Date: Fri, 10 Aug 2007 11:57:28 To:toasters@mathworks.com Subject: Re: Increasing the size of disks in an existing array
Thanks for the input guys, it was kind of what i was expecting to hear but not what i wanted to hear That said I have informed my boss and he has agreed to purchase a new shelf which will get us out of trouble for the moment on the FAS 940 which is very low on disks, I take it to add the shelf i will have to power down the filer?
Bryano wrote: Hi, I have 'inherited' several filers including FAS 270's and FAS 940's which only have 72GB drives and we are now running very low on spares and the company I work for is reluctant to buy another shelf, it has therefore it has been proposed that we remove a disk at a time from a volumes raid group and replace it with a larger drive (300GB) and then once the raid has recovered then remove the next disk and repeat the procedure until all the disks in the volumes raid raid group have been replaced with larger ones. My initial question is - is this possible and if so once all the drives in a particular raid group that makes up a volume have been replaced with larger ones will that show immediately as free space available in that volume or will we need to do something else to get the filer to see the additional free space? Thanks
---------------- View this message in context: Re: Increasing the size of disks in an existing array http://www.nabble.com/Increasing-the-size-of-disks-in-an-existing-array-tf4231931.html#a12097120 Sent from the Network Appliance - Toasters mailing list archive http://www.nabble.com/Network-Appliance---Toasters-f2062.html at Nabble.com.
Thanks for the input guys, it was kind of what i was expecting to hear but not what i wanted to hear :-((
That said I have informed my boss and he has agreed to purchase a new shelf which will get us out of trouble for the moment on the FAS 940 which is very low on disks, I take it to add the shelf i will have to power down the filer?
If you have ESH2 shelves, then you can hot add a new shelf. Other shelves may work as well. I have definitely hot added shelves, so check the documentation. The procedure steps must be followed in the correct order or it doesn't work and the filer panics.
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
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Bryano -
Fox, Adam -
Mike Partyka -
Stephen C. Losen