Tuesday, September 29, 2009

Re: [BLUG] storage options

On Mon, Sep 28, 2009 at 3:16 PM, Mark Krenz <mark@slugbug.org> wrote:
>  If you care about your warranty and issues like having a Dell
> consultant visit your site, you might want to think twice about using
> components that you didn't buy from them. They won't support you if you
> use non-certified components.

That's worth mentioning.

If we needed that sort of help from Dell, though, we would probably
not be balking at paying $9,000 for a file server.

We're running Ubuntu Linux on the hardware anyhow, so we wouldn't be
able to get any "tech support" from them.

The only time we use their support is for hardware failure replacement
when things are still under warranty, and even then they like to make
a big deal about how it's a Bad Idea to run Ubuntu and how they won't
be able to help us "when there's a problem".

Never had a Dell guy come visit our site, for consulting or service,
that I know of, and probably never will.

Take care!

Simón

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Monday, September 28, 2009

Re: [BLUG] storage options

Mark Krenz wrote:
>
> Let me suggest to everyone reading this that its really worthwhile to
> learn how to install computer hardware yourself. From the case,
> motherboard, CPU all the way up to the hard drive and installing the OS,
> you will save LOTS of money. And its really not that hard once you learn
> some of the basics. Maybe there should be a BLUG meeting on how this
> works. Anyone putting a workstation together sometime soon?

I know you're referring to higher end stuff, but I build all the
workstations at my little workplace -- 8-10 over the last three years --
with entry level consumer grade components from NewEgg or TigerDirect.
Cost around $250 each. Never had one problem with any of them. <knock wood>

--

Mark Warner
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Re: [BLUG] storage options

On Mon, Sep 28, 2009 at 06:24:11PM GMT, Simón Ruiz [simon.a.ruiz@gmail.com] said the following:
>
> I was able to get the MD1000 with 10 15k 450GB SAS disks plus
> PowerEdge R200 servers (w/memory and processor slightly bumped from
> the default) for about $7,500 a piece, not $3,500.

Ah, that sounds more realistic. Ironically though, A 66% discount
would bring Dell equipment more inline with normal prices.

> It was then quoted to us by our education sales rep at $9,000
> initially, including the server. I sent a second "Request For Quote",
> mentioning we're needing to upgrade two campuses, indicating that
> $18,000 was a little more than we were hoping to spend, and asking her
> if she could get us a deal.
>
> She replied with a quote at about $15,000.

Such a huge discount just reinforces the fact that their stuff is
grossly overpriced. Hard drives that they quote on their site as
costing $600 are actually $150 elsewhere. I've been told by people from
Dell that those drives are specially certified, but they aren't anything
special. If they don't last longer than the same model hard drive
bought someplace else, then they aren't worth 4 times the cost.

Where I work during the day, we bought a large SAN (7 figures) and
bought a bunch of drives for $1500 each. They are just 146GB SAS drives
that you could buy for like $300-$400 off CDW at the time. Dell and EMC
are really good at ripping off large enterprises. Support isn't a
factor in that pricing either because every time we've had someone from
Dell come over, its been at extra cost.

Let me suggest to everyone reading this that its really worthwhile to
learn how to install computer hardware yourself. From the case,
motherboard, CPU all the way up to the hard drive and installing the OS,
you will save LOTS of money. And its really not that hard once you learn
some of the basics. Maybe there should be a BLUG meeting on how this
works. Anyone putting a workstation together sometime soon?

> When I went back to ask to buy some of the drive enclosures so we
> could put some SATA disks into the array (wanted to add a cheaper,
> slower, less redundant backup partition) they informed us that Dell
> does not sell those pieces of plastic and steel that way; that we
> would need to buy the hard disks from them in order to get the little
> box that holds them right for insertion into the array.
>
> As they charge way too much for the hard drives, I went and found out
> I can get those enclosures on eBay and such for $20-$40, and go buy my
> own RAID-level SATA drives from newegg or wherever and save at least
> 50% over the Dell price in some cases.

If you care about your warranty and issues like having a Dell
consultant visit your site, you might want to think twice about using
components that you didn't buy from them. They won't support you if you
use non-certified components.

> P.S. The array seems to be able to be plugged into two separate RAID
> controller cards on two separate servers at the same time. Joe
> mentioned something about sharing the storage across boxes; I didn't
> know if you meant just over the LAN or with something like this or a
> SAN.

Its been a while since I've worked with one of those enclosures, but I
think you can only hook one side (left or right 7 drives) into one
computer and hook the other side into a second computer. But like I
said, its been a while so they might have made them work better for
shared situations. They probably expect you to buy a NAS or SAN if you
want to share RAID groups.

Another thing that annoys me about Dell servers is that their
motherboard revisions are really specific. Even if you have a specific
CPU socket on your motherboard, the motherboard revision (not BIOS) may
not support a newer CPU like quad core or something. They expect you to
buy a whole new motherboard for like $1200. Meanwhile, the Supermicro
servers I use at my business happily support most CPUs I would care to
upgrade to within the same socket category.

Supermicro makes great servers and they are reasonably priced. You
could actually buy a 24 SAS drivebay Supermicro server with plenty of
RAM and 10 450GB SAS drives 3ware RAID controller for less than $8000.
And that would be much more than just a drive enclosure and could be
expanded to 24 drives. And then just run FreeNAS on it as someone else
mentioned.

--
Mark Krenz
Bloomington Linux Users Group
http://www.bloomingtonlinux.org/

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Re: [BLUG] storage options

On Mon, Sep 28, 2009 at 9:59 AM, Mark Krenz <mark@slugbug.org> wrote:
>  May I ask exactly what storage array you bought?  Was it a MD1000?
> A new MD1000 array with 10 15k 400GB SAS disks costs $10,000.

Let me see...yeah.

You're right, I screwed up my figures. Thanks for the note.

I was able to get the MD1000 with 10 15k 450GB SAS disks plus
PowerEdge R200 servers (w/memory and processor slightly bumped from
the default) for about $7,500 a piece, not $3,500.

It's actually the 450GB SAS disks that we got, so after taking 2 out
for hotswapping, we've got (8 * 450 / 2) or 1800 GB of theoretically
super-fast storage space in the pool.

I priced it at somewhere around $10,000 on their site, as you say.

It was then quoted to us by our education sales rep at $9,000
initially, including the server. I sent a second "Request For Quote",
mentioning we're needing to upgrade two campuses, indicating that
$18,000 was a little more than we were hoping to spend, and asking her
if she could get us a deal.

She replied with a quote at about $15,000.

I don't know how much is that we're a school, how much is that we
asked as a crucial sales quota deadline approached, or how much is
that we actually *asked* for a deal, but we managed to get an okay
price on that, overall.

*HOWEVER*

When I went back to ask to buy some of the drive enclosures so we
could put some SATA disks into the array (wanted to add a cheaper,
slower, less redundant backup partition) they informed us that Dell
does not sell those pieces of plastic and steel that way; that we
would need to buy the hard disks from them in order to get the little
box that holds them right for insertion into the array.

As they charge way too much for the hard drives, I went and found out
I can get those enclosures on eBay and such for $20-$40, and go buy my
own RAID-level SATA drives from newegg or wherever and save at least
50% over the Dell price in some cases.

Explaining the economic incentives at play didn't help the sales rep
get me any better of a deal that time, though; in fact, he simply did
not even reply to my asking.

> --
> Mark Krenz

Simón

P.S. The array seems to be able to be plugged into two separate RAID
controller cards on two separate servers at the same time. Joe
mentioned something about sharing the storage across boxes; I didn't
know if you meant just over the LAN or with something like this or a
SAN.

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Re: [BLUG] storage options

On Mon, Sep 28, 2009 at 05:13:17AM GMT, Simón Ruiz [simon.a.ruiz@gmail.com] said the following:
>
> I went to Dell and spec'ed out a brand new external RAID enclosure
> that connects via some PCI-e RAID controller card, with 10 15k RPM SAS
> drives in (the fastest drives available for the array) providing 2TB
> of reasonably redundant (RAID 10 + a couple of hotswaps sitting on
> standby) storage. I'm also hoping for a little bit of a boost during
> read operations, theoretically, from the RAID config.
>
> Oh, and we had to buy a brand new server so we could connect the
> enclosure to something. I just picked the cheapest rack-mount Dell had
> that would connect to that enclosure, and tweaked the config slightly.
>
> Because we caught them at the end of their sales quota time period,
> and because we bought two identical setups, we were able to get them
> for about $3,500 a piece.
>

May I ask exactly what storage array you bought? Was it a MD1000?
A new MD1000 array with 10 15k 400GB SAS disks costs $10,000.

--
Mark Krenz
Bloomington Linux Users Group
http://www.bloomingtonlinux.org/

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Sunday, September 27, 2009

Re: [BLUG] storage options

I should also add that one downside of UFS as provided by FreeNAS is
that I'd have to give up LVM. Since I plan to run several servers that
would share this same storage it would be nice to put each of these disk
images in their own growable partitions, or at least have this available
as an option.


Joe Auty wrote:
> Lord Drachenblut wrote:
>> On Sunday 27 September 2009 3:37:10 am Joe Auty wrote:
>>> Hey Guys,
>>>
>>>
>>> I'm looking for some perspectives on the storage options available
>>> today, and on the horizon...
>>>
>>>
>>> Specifically, I'm thinking about something that would be a little
>>> handier and more future proof for my servers I run. Specifically, I run
>>> VMWare Server on Linux and several virtual machines all on the same
>>> hardware.
>>>
>>> There are several different variables and technologies at this point:
>>>
>>> - direct attach w. software or hardware RAID
>>>
>>> - file systems such as ZFS and BTRFS and the cool stuff you can do with
>>> them
>>>
>>> - NAS
>>>
>>> - external RAID arrays
>>>
>>> - iSCSI
>>>
>>> - getting higher quality disks such as SCSI and solid state drives
>>>
>>>
>>>
>>> In a perfect world, here is what I'd like:
>>>
>>>
>>> - A storage device not tethered to my servers so that I can add more
>>> storage as needed without planning for downtime and running dd, and
>>> upgrade server hardware without having to reinvest in storage.
>>>
>>> - Fast I/O suitable for running VMs. There are tricks that can be
>>> employed which will help one get by with SATA, but you still have to be
>>> careful not to do heavy disk operations on the host as to render the
>>> guests unresponsive. This is a nuisance, and of course makes
>>> hypothetically backing up complete VM disk images difficult.
>>>
>>> - Disk redundancy, i.e. some sort of RAID configuration.
>>>
>>> - Some sort of solution somewhere between Cletus the Slackjaw Yokel's
>>> Windows XP box and high level enterprise stuff. I like the idea of
>>> spreading out the I/O demand across several cheap disks, adding more
>>> disk as needed, replacing failed disks as necessary. I don't need crazy
>>> fast I/O, I just need something a little more than a single SATA disk.
>>> So, enterprise level technology is not what I'm after here, just
>>> convenience and decent performance.
>>>
>>> - Something that will be relatively future proof and not cost me a
>>> fortune :)
>>>
>>> - I'm using nearly 250 gig right now so my capacity needs are not
>>> tremendous, but it would cost me a lot more than what I'm paying now to
>>> run within a VPS provider such as Linode or Slicehost, and I'd rather
>>> not get into the position where my costs grow significantly just to add
>>> a modest amount of disk space. My storage needs don't warrant an
>>> expensive SAN such as the ones that are no doubt in use by these
>>> providers, one of my VMs is running Windows, and I like the control I
>>> have now and I like working with my server provider. So, I'm not really
>>> keen on moving my eight servers to VMs provided by one of these
>>> companies
>>>
>>> - A way to backup all of this data (snapshots), preferably via the same
>>> overall design so that I have something I can test with and perhaps even
>>> fail over to in the event of an emergency. I know that offsite
>>> redundancy is the golden egg for many companies, but hey, this is a
>>> perfect world type wishlist! :) I use Amazon S3 for an offsite backup in
>>> addition to my current backup to backup my most important data, but to
>>> keep my costs to a minimum I'd prefer to just stay with rsync to
>>> multiple cheap disks.
>>>
>>>
>>> I'm interested in learning more about iSCSI, and am fascinated with
>>> BTRFS and ZFS. Do any of you have any experience with any of this, have
>>> any general recommendations, thoughts, predictions, anything? I don't
>>> need to buy anything tomorrow, I'm just thinking that it would be nice
>>> to think ahead a little.
>>>
>>> It seems like I'm kind of stuck in between not needing to invest heavily
>>> in storage like a big company would, yet I'm pushing the limits of
>>> run-of-the-mill consumer grade direct attach SATA type stuff - the kind
>>> of solution that would be great for using with Time Machine to store
>>> pictures of your kids.
>>>
>>
>> You might try looking into using freenas. it can do alot of the things
>> you
>> are looking for and has support for zfs and iscsi at this point.
>>
>
> Thanks for the idea!
>
> I've looked at FreeNAS in the past, and it is an interesting option and
> seemingly useful to me since I use FreeBSD a lot, but what about the
> hardware end of things? What would host the disks that FreeNAS would
> manage and make available?
>
>
>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
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>
>


--
Joe Auty
NetMusician: web publishing software for musicians
http://www.netmusician.org
joe@netmusician.org
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Re: [BLUG] storage options

On Sun, Sep 27, 2009 at 8:44 PM, Joe Auty <joe@netmusician.org> wrote:
> Lord Drachenblut wrote:
>> You might try looking into using freenas.  it can do alot of the things you
>> are looking for and has support for zfs and iscsi at this point.
>
> Thanks for the idea!
>
> I've looked at FreeNAS in the past, and it is an interesting option and
> seemingly useful to me since I use FreeBSD a lot, but what about the
> hardware end of things? What would host the disks that FreeNAS would
> manage and make available?

Well, that really depends on what your standards are/how much you're
willing to pay.

We serve several hundred people at a time, all of their workstation
files (Windows's Desktop, My Documents, ApplicationData and such
folders) accessed directly from one Samba file server. We're feeling a
pretty hard crunch—painful amounts of wait states, file operations
taking too long or failing—so we decided to upgrade.

I went to Dell and spec'ed out a brand new external RAID enclosure
that connects via some PCI-e RAID controller card, with 10 15k RPM SAS
drives in (the fastest drives available for the array) providing 2TB
of reasonably redundant (RAID 10 + a couple of hotswaps sitting on
standby) storage. I'm also hoping for a little bit of a boost during
read operations, theoretically, from the RAID config.

Oh, and we had to buy a brand new server so we could connect the
enclosure to something. I just picked the cheapest rack-mount Dell had
that would connect to that enclosure, and tweaked the config slightly.

Because we caught them at the end of their sales quota time period,
and because we bought two identical setups, we were able to get them
for about $3,500 a piece.

Then, when one of the two (redundant, hotswappable) power supplies was
DOA and I called to get a new one, they seriously insisted on knowing
what O/S I was planning on installing (Ubuntu Linux), "Oh, well, we
can never know what strange problems can happen with that; I really
must suggest you use Red Hat Linux." *ahem* "The 'my power supply is
dead' indicator light is flashing, and the RAID enclosure is not even
connected to the server, which has a blank hard disk. Are you
seriously suggesting this is a software compatibility issue?"

Tune in after we get things setup for how well it works as a solution
to our crunch...

Simón

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