We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
By simple division it would be about 21 disks. Which would translate to a shelf and a half. Given the raid group size is 14 (max 16) for ATA disks, it would get pretty wasteful if you're trying to maximize your aggregate size. 3 shelves would give you 2 aggregates but you'd need 4 raid groups (8 drives gone to parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue.
Jeff Bryer wrote:
By simple division it would be about 21 disks. Which would translate to a shelf and a half. Given the raid group size is 14 (max 16) for ATA disks, it would get pretty wasteful if you're trying to maximize your aggregate size. 3 shelves would give you 2 aggregates but you'd need 4 raid groups (8 drives gone to parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
You could try GX...
I have 17.3TB and a 20.73TB volumes (after Formatting, after WAFL...i.e. USEABLE)
Not sure (yet) how large these can grow, but they are striped aggregates across two heads (soon to be four!).
--tmac
On 10/22/07, Andrew Siegel abs@blueskystudios.com wrote:
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue.
Jeff Bryer wrote:
By simple division it would be about 21 disks. Which would translate to
a shelf
and a half. Given the raid group size is 14 (max 16) for ATA disks, it
would get
pretty wasteful if you're trying to maximize your aggregate size. 3
shelves would
give you 2 aggregates but you'd need 4 raid groups (8 drives gone to
parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in
an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
I have a GX arriving this week. The underlying aggregates still can't grow past 16TB. You need to stripe across these with the High Performance Option to obtain the larger volume sizes, but you currently lose some of the functionality of 7G flexvols in the whole process.
tmac wrote:
You could try GX...
I have 17.3TB and a 20.73TB volumes (after Formatting, after WAFL...i.e. USEABLE)
Not sure (yet) how large these can grow, but they are striped aggregates across two heads (soon to be four!).
--tmac
On 10/22/07, *Andrew Siegel* <abs@blueskystudios.com mailto:abs@blueskystudios.com> wrote:
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue. Jeff Bryer wrote: > By simple division it would be about 21 disks. Which would translate to a shelf > and a half. Given the raid group size is 14 (max 16) for ATA disks, it would get > pretty wasteful if you're trying to maximize your aggregate size. 3 shelves would > give you 2 aggregates but you'd need 4 raid groups (8 drives gone to parity). > > I hope NetApp will raise the max raw aggregate size soon. I > > On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote: > >>I am running GX but the vol/aggr code is supposed to be the same. >> >>I have 26 disks of 750 per head. >>I played at the beginning and think I was limited to 21 or 22 disks in an aggregate. >> >>It did take the better part of the day to re-zero the disks again >> >>They right size to I think 632gb >> >>--tmac >> >>Sent from my Verizon Wireless BlackBerry >> >>-----Original Message----- >>From: "Stephen C. Losen" < scl@sasha.acc.virginia.edu <mailto:scl@sasha.acc.virginia.edu>> >> >>Date: Fri, 19 Oct 2007 17:38:13 >>To:toasters@mathworks.com <mailto:To:toasters@mathworks.com> >>Subject: How many 750G disks can can fit into an aggregate? >> >> >> >>We're going to buy some shelves of 750G ATA drives. An aggregate >>is limited to 16T "raw" (which I presume includes parity disks). >>Not having any 750G drives yet, we don't know what they size down to. >>Can anyone tell us how many 750G disks (including parity) that you >>can stuff into an aggregate? >> >> >>Steve Losen scl@virginia.edu <mailto:scl@virginia.edu> phone: 434-924-0640 >> >>University of Virginia ITC Unix Support > >-- --tmac
RedHat Certified Engineer #804006984323821
I've seen customer love GX; like UZ Leuven.
Their deployment experience @ http://www.netapp.com/go/techontap/matl/GX_journal.html
From: tmac [mailto:tmacmd@gmail.com] Sent: maandag 22 oktober 2007 16:15 To: Andrew Siegel Cc: toasters@mathworks.com Subject: Re: How many 750G disks can can fit into an aggregate?
You could try GX...
I have 17.3TB and a 20.73TB volumes (after Formatting, after WAFL...i.e. USEABLE)
Not sure (yet) how large these can grow, but they are striped aggregates across two heads (soon to be four!).
--tmac
On 10/22/07, Andrew Siegel abs@blueskystudios.com wrote:
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue.
Jeff Bryer wrote:
By simple division it would be about 21 disks. Which would translate
to a shelf
and a half. Given the raid group size is 14 (max 16) for ATA disks,
it would get
pretty wasteful if you're trying to maximize your aggregate size. 3
shelves would
give you 2 aggregates but you'd need 4 raid groups (8 drives gone to
parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in
an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" < scl@sasha.acc.virginia.edu
mailto:scl@sasha.acc.virginia.edu >
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
They can officially grow to 16 x 24 (aggr size per node x supported nodes in a cluster). I believe you can have multiple aggregate members on the same filer so in theory you could have 25 16TB aggrs on a 6070c x 12 (cluster limit) to make a single striped volume of ~4.8PB. In theory.....
Good luck backing that up though.
Jeff Kennedy
QCT Engineering Compute
858-651-6592
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of tmac Sent: Monday, October 22, 2007 7:15 AM To: Andrew Siegel Cc: toasters@mathworks.com Subject: Re: How many 750G disks can can fit into an aggregate?
You could try GX...
I have 17.3TB and a 20.73TB volumes (after Formatting, after WAFL...i.e. USEABLE)
Not sure (yet) how large these can grow, but they are striped aggregates across two heads (soon to be four!).
--tmac
On 10/22/07, Andrew Siegel abs@blueskystudios.com wrote:
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue.
Jeff Bryer wrote:
By simple division it would be about 21 disks. Which would translate
to a shelf
and a half. Given the raid group size is 14 (max 16) for ATA disks,
it would get
pretty wasteful if you're trying to maximize your aggregate size. 3
shelves would
give you 2 aggregates but you'd need 4 raid groups (8 drives gone to
parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in
an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" < scl@sasha.acc.virginia.edu
mailto:scl@sasha.acc.virginia.edu >
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
it certainly is impacting alot of our operations. i would not say losing business over yet but it is a major inconvenience especially with the larger and larger drives.
-- Daniel Leeds Manager, Storage Operations Edmunds, Inc. 1620 26th Street, Suite 400 South Santa Monica, CA 90404
310-309-4999 desk 310-430-0536 cell
-----Original Message----- From: owner-toasters@mathworks.com on behalf of Andrew Siegel Sent: Mon 10/22/2007 5:53 AM To: toasters@mathworks.com Subject: Re: How many 750G disks can can fit into an aggregate?
In my opinion (as a 12-year customer), the 16TB limit is the number one deficiency in NetApp software at the moment, and perhaps their biggest deficiency ever. I would be very surprised if they weren't losing customers over this issue.
Jeff Bryer wrote:
By simple division it would be about 21 disks. Which would translate to a shelf and a half. Given the raid group size is 14 (max 16) for ATA disks, it would get pretty wasteful if you're trying to maximize your aggregate size. 3 shelves would give you 2 aggregates but you'd need 4 raid groups (8 drives gone to parity).
I hope NetApp will raise the max raw aggregate size soon. I
On Fri, Oct 19, 2007 at 10:20:08PM +0000, Tim McCarthy wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
26, according to the 750GB disk FAQ pdf http://www.netapp.com/see/mycomm/P_026814
Which means you can determine this number yourself with other sized disk as long as you know the right sized capacity of a given disk, which for the 750GB disk looks like this:
26 X 635Gb (right sized capacity) = 16.5TB
HTH Mike Partyka
On 10/19/07 5:20 PM, "Tim McCarthy" tmacmd@gmail.com wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
And you just violated your NDA!!...
Did you not see the big verbiage in the corner: or the "Confidential" watermark on every page?
On 10/22/07, Mike Partyka mpartyka@acmn.com wrote:
26, according to the 750GB disk FAQ pdf http://www.netapp.com/see/mycomm/P_026814
Which means you can determine this number yourself with other sized disk as long as you know the right sized capacity of a given disk, which for the 750GB disk looks like this:
26 X 635Gb (right sized capacity) = 16.5TB
HTH Mike Partyka
On 10/19/07 5:20 PM, "Tim McCarthy" tmacmd@gmail.com wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in
an
aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
--
Michael Partyka - Technical Engineer . . . . . . . . . . . . . . . . . . . . . . . . . . Applied Communications of MN 3496 Shoreline Drive Spring Park, MN, 55348 o. 952 .471 .8558 c. 612 .669 .8268 e. mpartyka@acmn.com
You can¹t get to the link unless the have reseller access.
But I see what you mean.
On 10/22/07 9:44 AM, "tmac" tmacmd@gmail.com wrote:
And you just violated your NDA!!...
Did you not see the big verbiage in the corner: or the "Confidential" watermark on every page?
On 10/22/07, Mike Partyka mpartyka@acmn.com wrote:
26, according to the 750GB disk FAQ pdf http://www.netapp.com/see/mycomm/P_026814
Which means you can determine this number yourself with other sized disk as long as you know the right sized capacity of a given disk, which for the 750GB disk looks like this:
26 X 635Gb (right sized capacity) = 16.5TB
HTH Mike Partyka
On 10/19/07 5:20 PM, "Tim McCarthy" < tmacmd@gmail.com> wrote:
I am running GX but the vol/aggr code is supposed to be the same.
I have 26 disks of 750 per head. I played at the beginning and think I was limited to 21 or 22 disks in an aggregate.
It did take the better part of the day to re-zero the disks again
They right size to I think 632gb
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Stephen C. Losen" scl@sasha.acc.virginia.edu
Date: Fri, 19 Oct 2007 17:38:13 To:toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
--
Michael Partyka - Technical Engineer . . . . . . . . . . . . . . . . . . . . . . . . . . Applied Communications of MN 3496 Shoreline Drive Spring Park, MN, 55348 o. 952 .471 .8558 c. 612 .669 .8268 e. mpartyka@acmn.com
I recently built a filer using 750GB SATA disks and I was able to fit 25 disks before reaching the 16TB RAW limit.
I used raidsize=16 and this is how the distribution of the raid groups looks like on the filer:
Aggregate aggr2 (online, raid_dp) (block checksums) Plex /aggr2/plex0 (online, normal, active) RAID group /aggr2/plex0/rg0 (normal)
RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- dparity 0d.16 0d 1 0 FC:B - ATA 7200 635555/1301618176 635858/1302238304 parity 0d.32 0d 2 0 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0d.48 0d 3 0 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0d.17 0d 1 1 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.33 0b 2 1 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0d.49 0d 3 1 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0d.18 0d 1 2 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.34 0b 2 2 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0b.50 0b 3 2 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0b.19 0b 1 3 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0b.35 0b 2 3 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0b.51 0b 3 3 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0d.20 0d 1 4 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0d.36 0d 2 4 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0d.52 0d 3 4 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.21 0b 1 5 FC:A - ATA 7200 635555/1301618176 635858/1302238304
RAID group /aggr2/plex0/rg1 (normal)
RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- dparity 0b.53 0b 3 5 FC:A - ATA 7200 635555/1301618176 635858/1302238304 parity 0d.37 0d 2 5 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.22 0b 1 6 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0d.54 0d 3 6 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.38 0b 2 6 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0b.23 0b 1 7 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0d.55 0d 3 7 FC:B - ATA 7200 635555/1301618176 635858/1302238304 data 0b.39 0b 2 7 FC:A - ATA 7200 635555/1301618176 635858/1302238304 data 0d.24 0d 1 8 FC:B - ATA 7200 635555/1301618176 635858/1302238304
This is how much it yielded in space:
Aggregate total used avail capacity aggr2 11378GB 11106GB 271GB 98% aggr2/.snapshot 351GB 11GB 340GB 3%
OR in KB:
Aggregate kbytes used avail capacity aggr2 11930898168 11646454744 284443424 98% aggr2/.snapshot 368996848 11634236 357362612 3%
Regards, -Eduardo
Stephen C. Losen wrote:
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
26 with raid size 14
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephen C. Losen Sent: Friday, October 19, 2007 2:38 PM To: toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
As far as I know, the 16Tb limit is the raw limit for your aggregate. 16Tb / 750Gb = 21 disks.
Using 14 disk raid groups, you will have 4 parity disks for 2 RAID groups, meaning, you will have 17 data disks in your aggregate.
Grtz, Tom
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Venkat Appineni Sent: vrijdag 2 november 2007 19:10 To: Stephen C. Losen; toasters@mathworks.com Subject: RE: How many 750G disks can can fit into an aggregate?
26 with raid size 14
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephen C. Losen Sent: Friday, October 19, 2007 2:38 PM To: toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
Does not limit apply to right sized disks?
С уважением / With best regards / Mit freundlichen Grüβen
--- Andrey Borzenkov Senior system engineer -----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of De Wit Tom (Consultant) Sent: Wednesday, November 07, 2007 12:32 PM To: toasters@mathworks.com Subject: RE: How many 750G disks can can fit into an aggregate?
As far as I know, the 16Tb limit is the raw limit for your aggregate. 16Tb / 750Gb = 21 disks.
Using 14 disk raid groups, you will have 4 parity disks for 2 RAID groups, meaning, you will have 17 data disks in your aggregate.
Grtz, Tom
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Venkat Appineni Sent: vrijdag 2 november 2007 19:10 To: Stephen C. Losen; toasters@mathworks.com Subject: RE: How many 750G disks can can fit into an aggregate?
26 with raid size 14
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephen C. Losen Sent: Friday, October 19, 2007 2:38 PM To: toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
Funny, we tried this yesterday ...
You can use 26 disks (750GB disk => about 650GB usable ...) Raidsize doesn't matter ! So if you use raidsize 3 you'll have less than 6TB for data ...
Norbert
-----Ursprüngliche Nachricht----- Von: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] Im Auftrag von De Wit Tom (Consultant) Gesendet: Mittwoch, 7. November 2007 10:32 An: toasters@mathworks.com Betreff: RE: How many 750G disks can can fit into an aggregate?
As far as I know, the 16Tb limit is the raw limit for your aggregate. 16Tb / 750Gb = 21 disks.
Using 14 disk raid groups, you will have 4 parity disks for 2 RAID groups, meaning, you will have 17 data disks in your aggregate.
Grtz, Tom
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Venkat Appineni Sent: vrijdag 2 november 2007 19:10 To: Stephen C. Losen; toasters@mathworks.com Subject: RE: How many 750G disks can can fit into an aggregate?
26 with raid size 14
-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Stephen C. Losen Sent: Friday, October 19, 2007 2:38 PM To: toasters@mathworks.com Subject: How many 750G disks can can fit into an aggregate?
We're going to buy some shelves of 750G ATA drives. An aggregate is limited to 16T "raw" (which I presume includes parity disks). Not having any 750G drives yet, we don't know what they size down to. Can anyone tell us how many 750G disks (including parity) that you can stuff into an aggregate?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support
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Andrew Siegel -
Borzenkov, Andrey -
De Wit Tom (Consultant) -
Doucet, Hugo -
Eduardo Rivera -
Geissler, Norbert -
Jeff Bryer -
Kennedy, Jeffrey -
Leeds, Daniel -
Mike Partyka -
Stephen C. Losen -
Tim McCarthy -
tmac
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Venkat Appineni