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Mierdaan
Sep 14, 2004



Pillbug

Auslander posted:

Oh man, this thread is a welcome sight.

I'm just about to get a Clariion AX4 configured w/ 11 400GB 10k SAS drives and 2 heads to replace our crap-rear end Ubuntu NFS server that's currently providing backend storage to 4 ESX frontends.

Any setup tips on carving this thing up once it ships to us? How should i connect VM -> storage? Expose a LUN for each VM then use RDM in vmware? One giant VMFS volume stored to a RAID-10 on the AX4? A mix of both? Nothing? OH GOD THE CHOICES ARE KILLING ME

Haha, I'm right where you are. We're looking at the Dell MD3000i and the AX4 right now, and the jump from crappy DAS to a real (if low-end) SAN is just imposing.

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Vulture Culture
Jul 14, 2003

I was never enjoying it. I only eat it for the nutrients.


Mierdaan posted:

(if low-end)
And you ain't kidding, the performance on the MD3000 is really not spectacular

M@
Jul 10, 2004


Misogynist posted:

I need a handful of IBM GNS300C3 drives, since in spite of me having 4-hour replacement on these IBM cannot direct me to a single one anywhere in the country

Sent you an IM, but I'll post here just in case you missed it...

I've never heard of those drives. What machine are you putting them in?

H110Hawk
Dec 28, 2006
Can't install Windows?
BUY APPLE


M@ posted:

I've got one 6080

I've worked with a bunch of goons in the past and no one's ever said anything bad about me to my face

Sorry about that 6080.

I'll vouch for M@, he's yet to let me down, and I've bought one or two things from him.

I'll have a look see at the IX systems stuff, thanks. A 48-in-4u beige box chassis is just the kind of thing I was looking for to knock off this Sun X4500/J4000 stuff.

Edit: Hah, I was just looking at the Xyratex stuff and being annoyed at no obvious link to resellers. http://xyratex.com/products/storage...age-F5404E.aspx I've had good luck with their DS14 shelves, I can't imagine this being much worse, besides the onboard raid.

H110Hawk fucked around with this message at Sep 18, 2008 around 21:15

Mierdaan
Sep 14, 2004



Pillbug

Misogynist posted:

And you ain't kidding, the performance on the MD3000 is really not spectacular

What do you mean by not spectacular? I mean, the most IOPS-intensive thing we're throwing onto it is Exchange 2007 install for 250-ish users pushing about 600 IOPS. Are we going to be unhappy?

Alowishus
Jan 8, 2002

My name is Mud

rage-saq posted:

Get an HP SmartArray P800 card and then attack up to 8 MSA60 12xLFF enclosures.
P800 is about $1k, each shelf is about $3k and then add your 1TB LFF SATA drives and you are good to go. If you need more attach another P800 and more shelves etc.
Just out of curiosity, in an HP environment, how does one add their own 1TB LFF SATA drives? Is there a source for just the drive carriers? Because using HP's 1TB SATA drives @~$700/ea makes this quite an expensive solution.

M@
Jul 10, 2004


H110Hawk posted:

Sorry about that 6080.

No problem. I have a feeling if you ever want/need one it will be here waiting for you, with open arms.

1000101
May 14, 2003

BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY FRUITCAKE!

Catch 22 posted:

I collected some IOPS data for my environment, and we are looking at a average of 300, top end 600 IOPS, excluding when my backup is running. I am looking at a Equallogic SATA SAN 8TB now (3000 IOPS), and its 50K+ or 60K+ for SAS.

Mind you this is SATA, and I assume you are talking about SCSI, SAS high end enterprise stuff. You say 30K for comparable specs? What am I getting hosed on, or what are you leaving out?

I was thinking 30K when I started this trek and I don't know what happened now that I hold this quote in my hands.

What software options are you looking at? Why are you buying 8TB of storage? Do you need 8TB? For 60k you can buy a lot of decent storage.

adorai
Nov 2, 2002

10/27/04 Never forget

Grimey Drawer

Alowishus posted:

Just out of curiosity, in an HP environment, how does one add their own 1TB LFF SATA drives? Is there a source for just the drive carriers? Because using HP's 1TB SATA drives @~$700/ea makes this quite an expensive solution.
I looked into this once (u320 drives), and the trays were a couple hundred a piece second hand, couldn't find them new.

rage-saq
Mar 21, 2001

Thats so ninja...

Alowishus posted:

Just out of curiosity, in an HP environment, how does one add their own 1TB LFF SATA drives? Is there a source for just the drive carriers? Because using HP's 1TB SATA drives @~$700/ea makes this quite an expensive solution.

I don't know if theres a SKU for the correct drive trays, generally I just tell customers to buy the HP drives and thats the end of it.

dexter
Jun 24, 2003


Absorbs Quickly posted:

Thanks for that. Dell was trying to sell us those explicitly *for* use with freeBSD.

I wish I could stab whoever in procurement decided we had to use dell for all of our freeBSD boxes.

I haven't tested with FreeBSD. I just know it's not on the HCL and FreeBSD isn't listed as being compatible with it on Dell.com.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

1000101 posted:

What software options are you looking at? Why are you buying 8TB of storage? Do you need 8TB? For 60k you can buy a lot of decent storage.

Equallogic SANs come with everything, Replication, Snapshots, Exchange and SQL Shapshots and...well I don't know whatever other SAN vendors part out software wise.
I need all of the options I just listed. I don't need 8TBs, I need 3.5 but 16 500GB SATAs running in RAID 10 give me the storage and speed I need. Dell loves to shove RAID 50 down my throat.

optikalus
Apr 17, 2008


Catch 22 posted:

I collected some IOPS data for my environment, and we are looking at a average of 300, top end 600 IOPS, excluding when my backup is running. I am looking at a Equallogic SATA SAN 8TB now (3000 IOPS), and its 50K+ or 60K+ for SAS.

Mind you this is SATA, and I assume you are talking about SCSI, SAS high end enterprise stuff. You say 30K for comparable specs? What am I getting hosed on, or what are you leaving out?

I was thinking 30K when I started this trek and I don't know what happened now that I hold this quote in my hands.

I'm curious how you're calculating 3000 IOPS for the Equallogic. 7200RPM SATA drives yield about 80 IOPS per spindle, so you would need 38 drives to reach 3000. You would need to fill the box with 15k RPM drives to get anywhere near 3000 IOPS.

I can't imagine that the Equallogic is doing that fancy pilardata thing where they split up the disk and put the 'faster' data on the outside edge, but that'd be neat.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

optikalus posted:

I'm curious how you're calculating 3000 IOPS for the Equallogic. 7200RPM SATA drives yield about 80 IOPS per spindle, so you would need 38 drives to reach 3000. You would need to fill the box with 15k RPM drives to get anywhere near 3000 IOPS.

I can't imagine that the Equallogic is doing that fancy pilardata thing where they split up the disk and put the 'faster' data on the outside edge, but that'd be neat.

I didn't calculate that number, that comes from my "Storage Specialist" at Dell telling me my peak IOSP to use a Equallogic. I calculated MY IOPS for my environment, and I added on to my real number to account for the RAID overhead.

I assure you I wont argue if someone calls "bullshit". I don't trust anyone trying to sell me poo poo, thus why I am here.

Its a nice device, but 60K for a SATA SAN just boggles my mind.
He did show me a 2000 mailbox Exchange 2007 environment running off a SATA one though.

Vanilla
Feb 24, 2002

Hay guys what's going on in th

optikalus posted:

I'm curious how you're calculating 3000 IOPS for the Equallogic. 7200RPM SATA drives yield about 80 IOPS per spindle, so you would need 38 drives to reach 3000. You would need to fill the box with 15k RPM drives to get anywhere near 3000 IOPS.

I can't imagine that the Equallogic is doing that fancy pilardata thing where they split up the disk and put the 'faster' data on the outside edge, but that'd be neat.

It's not just drives, a lot of IOPS is provided by the intelligent cache of the array before it even hits the drives.

You should always be wary of any IOPS benchmarks and statements, they're almost always useless - like a vendor benchmarking - often they benchmark such a small amount of data it doesn't even hit their back end and all comes from cache. Some monkey in a lab once saw the IOPS meter hit 300,000 IOPS so that will be what goes on all the slides and marketing outputs!

Vanilla fucked around with this message at Sep 19, 2008 around 17:01

Vanilla
Feb 24, 2002

Hay guys what's going on in th

Catch 22 posted:


Its a nice device, but 60K for a SATA SAN just boggles my mind.
He did show me a 2000 mailbox Exchange 2007 environment running off a SATA one though.

I would consider this to be awful. SATA drives just are not made for the random IO of Exchange.

Can they do it? Sure they can if you use enough.....but I would always recommend using SAS / FC drives.

Also, you shouldn't share exchange spindles with other applications because they will just grind to a halt. So that means dedicating spindles for exchange. If you use large SATA drives then you have a huge amount of wasted space and typically Exchange wants performance, not massive capacity. 146GB and 300GB FC spindles would be perfect.

rage-saq
Mar 21, 2001

Thats so ninja...

Catch 22 posted:

I didn't calculate that number, that comes from my "Storage Specialist" at Dell telling me my peak IOSP to use a Equallogic. I calculated MY IOPS for my environment, and I added on to my real number to account for the RAID overhead.

I assure you I wont argue if someone calls "bullshit". I don't trust anyone trying to sell me poo poo, thus why I am here.

Its a nice device, but 60K for a SATA SAN just boggles my mind.
He did show me a 2000 mailbox Exchange 2007 environment running off a SATA one though.

Yeah, if he's telling you 3k IOPS with that equalogic, he clearly has NO idea what he's talking about. Thats just peak IOPS for that unit under the right configuration, which is NOT how someone who knows how to design storage is going to talk about the speed of an array with you.
Someone that knows what they are doing and isn't just some retarded sales drone parroting marketing information and talking points given to him in his 'training classes' is going to with you about what kind of IOPS you currently push, where you are going, and what kind of setup you need to achieve that.

That being said I've setup a few Equalogics for customers who purchased them before engaging my services, and I don't really like them. Silly setup constraints like not being able to use all of the drives in the chassis in one array and other things. Their cabling setup of only 2x 1GbE despite having 3 ports was odd, their web management page was alright but left a lot to be desired.
One of the customers who I setup said Equalogic 2 months is already going to be moving to a better SAN because it just wasn't cutting it as configured.

And about his comment of an Equalogic box running a 2000 user Exchange 2007 environment, I'm going to either call bullshit or say it ran unacceptably slow. I've done a few 2000 user Exchange designs, and the last design will use 16x 146gb 15k HDD in RAID10 for the database and then a small LUN on a separate 6x300gb 15k RAID10 disk group for the log files. I really doubt a single equalogic box would be able to handle it acceptably unless it was a REALLY lightly used Exchange server.

rage-saq fucked around with this message at Sep 19, 2008 around 17:17

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

Vanilla posted:

I would consider this to be awful. SATA drives just are not made for the random IO of Exchange.

Can they do it? Sure they can if you use enough.....but I would always recommend using SAS / FC drives.

Also, you shouldn't share exchange spindles with other applications because they will just grind to a halt. So that means dedicating spindles for exchange. If you use large SATA drives then you have a huge amount of wasted space and typically Exchange wants performance, not massive capacity. 146GB and 300GB FC spindles would be perfect.

FC anything is pointless for me. I have 60 users, most who dick off all day, read internet stuff, and redraft word docs. Server network load never peaks over 10Mb until I run the backup.

I do hear you about SATA though, as honestly I am scared to move to it, but now that I have been really looking at our numbers, I don't think we need anything high end. Who knows, I might shoot myself after this is all done.

But like the focus of my question, am I overpaying, as a EMC comes out cheaper, even with SAS, but could I be forgetting something? Am I losing out on a feature that I need and would out weigh the cost of a Equallogic? I mean, I am small potatos compared to all of you here, but I like the DR aspect of VMs in ESXi on a SAN.

Vulture Culture
Jul 14, 2003

I was never enjoying it. I only eat it for the nutrients.


Mierdaan posted:

What do you mean by not spectacular? I mean, the most IOPS-intensive thing we're throwing onto it is Exchange 2007 install for 250-ish users pushing about 600 IOPS. Are we going to be unhappy?
At 600 IOPS you're probably going to be fine, just be aware that if you're using an NX1950, you have a 2.1 TB LUN limit. This probably isn't a huge dealbreaker for Exchange since you can just break up the message stores pretty transparently, but it's something to be aware of if you're looking for generic storage.

Vanilla
Feb 24, 2002

Hay guys what's going on in th

Catch 22 posted:

FC anything is pointless for me. I have 60 users, most who dick off all day, read internet stuff, and redraft word docs. Server network load never peaks over 10Mb until I run the backup.

I do hear you about SATA though, as honestly I am scared to move to it, but now that I have been really looking at our numbers, I don't think we need anything high end. Who knows, I might shoot myself after this is all done.

But like the focus of my question, am I overpaying, as a EMC comes out cheaper, even with SAS, but could I be forgetting something? Am I losing out on a feature that I need and would out weigh the cost of a Equallogic? I mean, I am small potatos compared to all of you here, but I like the DR aspect of VMs in ESXi on a SAN.

When I say FC I don't mean an FC network I just mean FC Drives - FC interface on the paddle. Very common these days on many arrays.

SATA is fine as long as you know how to use it and not use it. I'd always say take some SATA with some FC because you WILL end up needing it!

Dell do resell EMC stuff but they prefer selling Equalogic as they get paid more for selling it and they can go lower on price. Dell is all about volume and price.

Let's start fro the bottom. What are you after? How much capacity? What are you going to put on it? What do you want? What apps? Typical users? etc etc.

StabbinHobo
Oct 18, 2002

nothing beats the hobo life, stabbin folks with my hobo knife

vendors almost always quote the iops that the controller nodes can handle if they had an infinite number of spindles behind them. Read it as a ceiling not a median or a floor.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

Vanilla posted:

Let's start fro the bottom. What are you after?
A SAN to host everything, Flatfiles Data, SQL, Exchange and my Local VM store to boot from, and something that will play into my DR plan for replicating offsite at some point set for late next year.

Vanilla posted:

How much capacity?

1TB for Data/SQL/Exchange, 500Gigs for VMs, 500Gigs for Snaps, 1TB for extra growth on top of what is already allowed for in the former numbers. My enviroment uses about 550Gigs as of right now, that's EVERYTHING on my tapes and estimated OS/Applications size.

Vanilla posted:

What are you going to put on it?

Again -everything, Flatfiles Data, SQL, Exchange and my Local VM store

Vanilla posted:

What do you want?
See above

Vanilla posted:

What apps?

See above, if you need more detailed kinds of apps, they are all flatfile crap, nothing special.

Vanilla posted:

Typical users?

30 Lawyers 30 Staff/Secretary...they pittle around in word docs, web apps, and emails between counting large piles of money. (i.e. - dick off all day as said before.)

Vanilla
Feb 24, 2002

Hay guys what's going on in th

Catch 22 posted:

A SAN to host everything, Flatfiles Data, SQL, Exchange and my Local VM store to boot from, and something that will play into my DR plan for replicating offsite at some point set for late next year.

1TB for Data/SQL/Exchange, 500Gigs for VMs, 500Gigs for Snaps, 1TB for extra growth on top of what is already allowed for in the former numbers. My enviroment uses about 550Gigs as of right now, that's EVERYTHING on my tapes and estimated OS/Applications size.

Again -everything, Flatfiles Data, SQL, Exchange and my Local VM store

See above

See above, if you need more detailed kinds of apps, they are all flatfile crap, nothing special.

30 Lawyers 30 Staff/Secretary...they pittle around in word docs, web apps, and emails between counting large piles of money. (i.e. - dick off all day as said before.)

For such a small number of people you could get away with a NAS device that is capable of iSCSI rather than a SAN. With the SAN you're going to have to cough up for swiches, cables and Host Bus Adapters.

I see a lot of large companies these days not even pushing Fibre Channel and you're a lot lot smaller than they are. You can also get away with sharing spindles for your key apps, the number of people you have and their lethargic work style you describe i'm sure you'll be ok.

Now as I said above i'm an EMC guy so everything I propose will be *SHOCK HORROR* EMC! but there are alternatives.

EMC NX4
Dual Blades for High availability
CIFS license for windows shares
iSCSI License
12 x 300GB 15k SAS drives giving 2.3TB usable in R5
7 x 1TB drives giving 3.6TB usable in R6 (Scales to 60 drives total) - not really needed but I felt like putting them in
3 years HW and SW maintenance
Replication possible when you add second box
4 x Fibre Channel ports so you can add FC hosts later on - direct connect if need be.

http://www.emc.com/products/detail/hardware/celerra-nx4.htm

I don't know the kind of discount you'd get but you'd be looking at about $25k-30k i'd imagine.

Vanilla fucked around with this message at Sep 19, 2008 around 22:21

1000101
May 14, 2003

BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY BIRTHDAY FRUITCAKE!

As an alternative;

http://www.netapp.com/us/products/s...comparison.html

you get iSCSI and CIFS for free though.

Pay for options you might find useful:

Snap Manager for MS Exchange

Snap Manager for VMware

Snap Manager for MS SQL

EMC and NetApp both make fine products and it shouldn't be too difficult to get an eval.

Both should come in <60,000 USD. NetApp may be cheaper since RAID DP will give you sufficient performance without having to buy double your required capacity in disks. It also virtualizes storage on the backend making management a little less of a hassle for you.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

1000101 posted:

As an alternative;

http://www.netapp.com/us/products/s...comparison.html

you get iSCSI and CIFS for free though.

Pay for options you might find useful:

Snap Manager for MS Exchange

Snap Manager for VMware

Snap Manager for MS SQL

EMC and NetApp both make fine products and it shouldn't be too difficult to get an eval.

Both should come in <60,000 USD. NetApp may be cheaper since RAID DP will give you sufficient performance without having to buy double your required capacity in disks. It also virtualizes storage on the backend making management a little less of a hassle for you.

Cool, I will get on that Monday. I would need all the Snap Managers you just listed as well.

Thanks for everyone help. This lets me know I need to keep hunting a bit more.

StabbinHobo
Oct 18, 2002

nothing beats the hobo life, stabbin folks with my hobo knife


Click here for the full 1088x747 image.


magic yellow box

adorai
Nov 2, 2002

10/27/04 Never forget

Grimey Drawer

Catch 22 posted:

Cool, I will get on that Monday.
FWIW, I love my netapp filers. I have no idea how many iops I am really using on my iSCSI storage backend for vmware, but I am running about 15 app servers off of it. I have one shelf dedicated to VM storage, 14 15k rpm FC drives, probably cost $20k new for just that one shelf. A new head will run you like $30k, maybe a little less, so you are looking at $50k for around 1.5TB of high iops storage. Then you spend $10k on a sata shelf for bulk storage and you are at your $60k budget, but you've got a netapp which is very very easy to work with.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

StabbinHobo posted:


Click here for the full 1088x747 image.


magic yellow box

What? Is that a tool? Google turns up nothing for that. How did you make that chart?

H110Hawk
Dec 28, 2006
Can't install Windows?
BUY APPLE


Catch 22 posted:

What? Is that a tool? Google turns up nothing for that. How did you make that chart?

If I had to guess it's just snmp data graphed with something like cacti/rrdtool.

Edit: Jesus, you would think they could just sell you a SNMP license.

H110Hawk fucked around with this message at Sep 21, 2008 around 06:05

StabbinHobo
Oct 18, 2002

nothing beats the hobo life, stabbin folks with my hobo knife

^^^ I wish, I harped on them about exposing an snmp interface and mib a ton but no budge, they'd rather sell their "reporter" product

Catch 22 posted:

What? Is that a tool? Google turns up nothing for that. How did you make that chart?

its the built in stats grapher in the 3par gui client

Wicaeed
Feb 8, 2005


Any storage guru's recommend any books/guides/technical manuals for learning SAN's? I recently started a job at a Data Center, and am looking to make myself more attractive for promotion. Cisco Cert + SAN experience should fit that bill nicely imo.

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

Wanted to say thanks for all you advice, I have put together a quote for an EMC CX4 and its coming out with SAS, more storage space that before and should cover all my needs while being 30K cheaper than the Equallogic. Goons - You rock.

da sponge
May 24, 2004

..and you've eaten your pen. simply stunning.

Wicaeed posted:

Any storage guru's recommend any books/guides/technical manuals for learning SAN's? I recently started a job at a Data Center, and am looking to make myself more attractive for promotion. Cisco Cert + SAN experience should fit that bill nicely imo.

pet peeve/grammar nazi. Use an apostrophe to denote possession (The guru's ball is green), add an s or es to make a noun plural (gurus are great, SANs are special).

I doubt you're going to find a lot of books for learning SANs (although I could be wrong). A lot of them are proprietary and there aren't standard interfaces. Some of the terminology/storage/FC/iSCSI basics might be found in a book, but experience is king.

brent78
Jun 23, 2004

I killed your cat, you druggie bitch.

Anyone else going to be at the HP Storage Symposium in Colorado Springs next month? Send me a PM, I'm staying at the Broadmoor (as is everyone else I imagine)

rage-saq
Mar 21, 2001

Thats so ninja...

brent78 posted:

Anyone else going to be at the HP Storage Symposium in Colorado Springs next month? Send me a PM, I'm staying at the Broadmoor (as is everyone else I imagine)

Hmm, are you going through a distributor or through HP? One of my distributor guys whispered something about another storage event soon (last one was in SF).

brent78
Jun 23, 2004

I killed your cat, you druggie bitch.

rage-saq posted:

Hmm, are you going through a distributor or through HP? One of my distributor guys whispered something about another storage event soon (last one was in SF).
Our HP VAR invited me.

spoon daddy
Aug 10, 2004


College Slice

Wow, maybe this is best for another thread but I just came in to rescue someone from a SAN disaster. Apparently, they had two Storage Arrays with Remote Mirroring capability. The data was on Array 1 and the matching lun on Array 2 was new. A "Create Remote Mirror" command was issued from Array 2. Apparently, they thought that it would realize that the lun on Array 2 was empty and copy the data from Array 1 onto Array 2. poo poo, I couldn't even do a data resuce. Oh well, it was a non-critical system and they had backups from not long ago.

Wicaeed
Feb 8, 2005


Spoon Daddy, who do you work for? My employer just had a SAN failure the other day that managed to take down our backbone for all of our west coast customers. We had 60 customers down at one time, and it took over 12 hours to bring them all back up.

Wasn't a happy day

Catch 22
Dec 1, 2003
Damn it, Damn it, Damn it!

1000101 posted:

What software options are you looking at? Why are you buying 8TB of storage? Do you need 8TB? For 60k you can buy a lot of decent storage.

Your not kidding, I just got a quote on a EMC, for a AX4-5i DP with 1.7TB of SAS 15K drives and a second DAE with 12TB of SATA 7.2K including my SnapView, Navisphere, and SAN Copy for 30K.
I also found out that the Equallogic Dell buy is making for bad blood between EMC and Dell as they are trying to push the Equallogics on people (like me) that don't need or want to pay that much for a poo poo SAN (again, like me).

Screw Equallogic and the Dell horse they road in on. I'm sold on the EMC after all this. I did look at NetApps but I had some issues with how they perform as the array fills.

spoon daddy posted:

...they thought that it would realize...
When will people see that computers are not REALLY smart yet. They don't "realize" anything and do exactly what you tell them to do. (most of the time)

Wicaeed posted:

Spoon Daddy, who do you work for? My employer just had a SAN failure the other day that managed to take down our backbone for all of our west coast customers. We had 60 customers down at one time, and it took over 12 hours to bring them all back up.

Wasn't a happy day

How does a SAN fail? I mean, I can see by SpoonDaddys way of failing, but has anyone had a SAN truly fail? And I don't mean you ignored it after it had multiple hardware failures. I mean, everything is working and BAM, SAN dead.

Catch 22 fucked around with this message at Sep 25, 2008 around 14:19

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Maneki Neko
Oct 27, 2000



Catch 22 posted:

How does a SAN fail? I mean, I can see by SpoonDaddys way of failing, but has anyone had a SAN truly fail? And I don't mean you ignored it after it had multiple hardware failures. I mean, everything is working and BAM, SAN dead.

We once hit a bug in Data Ontap while resizing a LUN that knocked one head offline, then the other head took over and continued the same operation, hit the same bug and died too. It took about an hour for everything to come back up and be happy after replaying the logs, but I would classify that as a failure.

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