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why is it that some folks can't accept reality. The linux kernel powers more critical day to day computing tasks than the windows kernel by not by simple multiples, nay friends, linux out muscles microsoft by POWERs. Current industry darling buzzwordy bullshit Phones and tablets Android...

forget net neutrality, you're too far up the stack. until the laws that govern the speed of light from point A to point B through a fiber optic cable are manipulable, or quantum entanglement is solved in a manner that allows near instant 'interweb like' communication (for computers), there are...

microsoft is on a cloud hosted trajectory. in X years they want us all subscribing to their service which IMO is a much more honest cost model than software licenses which have no inherent tangible value. as long as steamOS can browse the web and or contains a full blown web browser that can...

You grossly underestimate the market's appetite for shiny bullshit. 'People' will do all manner of bullshit if they feel they will ... 1) get laid 2) have something their friends don't 3) personalize it so its 'theirs' 4) if they feel doing something that may require a bit of elbow grease...

My next project is Kodi (xbmc .. really guys, kodi was the best name you could come up with ...) and steam on linux. Using shortcuts and Advanced launcher you can (i do it with emulators and steam games now) integrate your gaming library with XBMC. Super simple albeit cumbersome to setup and...

I wouldn't count steamOS out yet. I would wager a decent amount of money that more games are played each day via a linux kernel is significantly higher than a windows kernel ... All told mind you. Steam, no doubt, most of those games are run via windows. The market as a whole though, android...

if the zeusRAM is 'too expensive' then you're in a position where absolute best performance doesn't matter anyway. sure, you want that performance but can't justify the cost. you then need to be happy with whatever performance a slc/mlc/emlc/tlc drive can deliver. also the zeusRAMs are down to...

nimble sucks. i could go into why, but i won't. they talk a great game but ... yeah. best of luck if you go with them. netapp is overpriced but generally just works. if you don't mind paying $1500 for a $300 drive, by all means go with netapp.

it's possible yes. i'm not as familiar with WD's sata line. however i imagine there ARE motor differences in the power saving drives or really anything that has a variable spin rate. 15k, 10k, those drives have motors specifically designed to run at top speed 24/7 for 5 years minimum right. now...

mmmm, highly unlikely you're going to find the same thing in your example. First, fairly certain most of WD's 'SAS' buisiness is from hitachi and now under the HGST banner. further, in WD's world the color key word differentiates the target market. what i have found with various 'green' drives...

there is no difference physically within the same family. ex: seagate constellation es.3 sata seagate constellation es.3 sas the only difference is the control board which has single port sata or dual port sas. i don't have a firmware dump from the sata drives it's possible they attempt to...

so re-write is a random pattern right. take blocks 4-10, read them, copy them, then write the new blocks. so whats occuring on the physical platters is you're taking blocks that were on sectors blah blah (towards the outer edge) and re-writing them to new sectors (will be on different/sectors...

use iometer or iozone if you want better source input. DD is ping for the IO subsystem. It is useful for proving disks are alive and useful to gather quick benchmarks to rule out hardware as the problem source. beyond that though, not incredibly useful

SM has a similar mobo for sandy and newer xeons. as i recall its 7 x8 slots. Thats 56 lanes for expansion, 8 for onboad networking, and then 16 lanes reserved for system CPU comms bringing us to 80 lanes (each xeon can do 40). If you're comfortable with your current design, i would stick with...

using it, a lot of important things occurred and or were fixed in this version. highly recommend upgrading all your old 3.x boxes. the unfortunate thing though, no graceful upgrade path. 4.x requires a fresh install. i've been testing 4.x for awhile now. its also worth noting that 4.x was...

so start your own company and show us all how you're right and all these idiots at the top are wrong. i'm going to hold my breath.

yeah so again .. this is facebook we're talking about. apparently i should have specified that this would be a 'facebook' event and the artists would be involved with and profit from the streams ... figured that was implied but apparently on Wednesday you lack the ability to connect dots on...

in and of itself ... no. with a community like facebook though. I can see facebook sending people with 360 degree camera setups on their head to say a popular concert (they're also plugged directly into the mixing board). for $5 you can throw on your occulus rift, connect to the stream, and...

There are still scenarios where you want to scrub, TCM2's example with mirrors is actually a very real potential issue. I may even revise my way of things after thinking about it a bit more. Z2 or Z3 configs though ... they really take a beating from scrubs. mirrors can handle it a bit better...

I'm aware, its the first step of said process though. As for disks failing, I use SANTools to monitor the BMSR logs for all my drives. I see the errors the OS doesn't and based on those logs, schedule disk replacements.

no, you're missing the point. it doesn't matter if a block is read every second or once a year. Anytime you read it you will rebuild if 1) the block and checksum dont match 2) ZFS can rebuild via checksum on point 2, there ARE scenarios where this can't happen albeit exceptionally rare...

You don't need to know. When a block is read ZFS compares it to the checksum. If they don't match the block is rebuilt. If both the checksum and block are fucked that data is dead, even on ZFS. point is you're going to be doing everything scrub does during production anyway every time a block...

where is said manual?

I have pools that won't finish scrubbing within a week's time. those same pools take the same amount of time to resilver. unless something occurred to the healthy pool, say a drive shits itself and issues checksum errors or something .... apart from that there is little reason to scrub a...

I haven't personally inspected these but I imagine they're similar to the dell 3060e. each of those 'drawers' has at least one cable connected to it. this cable is in a management arm thing and moves with the drawer as you pull it out and put it back in. It is HIGHLY unlikely that when you...

they make excellent shotgun and or rifle/pistol targets. also, for compliance after you're done shooting them to pieces you can check the 'pulverize' box next you fill out the report for phased out drives :).

no, well, so for everything i personally have tested no. to my knowledge there aren't any drives (you can buy) that can use both ports/paths to send/receive data at the same time. i think in talks i had in the past with STEC they have some firmware and have done testing to do just this but i...

exactly? fuck if i know. I think i used someone else's math i found somewhere and then just WAGed it to fit my setup. my method, not scientific at all but works :). basically think about the worst case scenario. if all your drives are 80% full how long does the rebuild take? answer...

just FYI, and i presume you're aware of this gea but if not and for everyone else ... this transactional behavior of ZFS has recently been changed, i believe by the guys at delphix. this change has been added to openzfs and should be part of omniOS now and I know for a fact is part of the...

no. UPS solves for loss of current at the 'wall socket' so to speak. in my world, i don't use UPS for anything because I have an entire room full of batteries in front of the (redundant) power switch that allows us to bounce between (redundant 1N1) street and (redundant 2N1) generator. now, i...

while not exactly what you're describing ... In one of my servers I had one of the two system/OS mirror disks shit the bed which in turn caused the SMF database to corrupt and one of my filer heads basically died. was on the phone with tier3 nexenta support and i believe the response was...

caveat, as long as you have battery of super cap backed SLOGs. anything in a transaction group that hasn't been committed is gone otherwise. now ZFS itself won't care about this. your pool/data will be fine. however, your guests ... if they expect that data they thought to be committed to disk...

2TB drives, yeah thats fine. the rebuild math around the 85% full mark is still acceptable. Topology is like this. On the LIS 9206-16E there are 4 SFF-8644 ports on the back. these ports physically tie back to an LSI 2308 chip. So, each of these cards is in fact two HBAs on a single card...

UPS can still fail, not likely presuming you or someone regularly services the batteries. my point though was you're worried about a PS failure ... so use a server that has two power supplies.

you should be. instant and sudden loss of power is death to a storage array. well, can be. drives love to just spin, they'll do this sometimes for many years past their warranty. they will continue doing this as long as the have a steady stream of good clean power. once that flow abruptly stops...

why? your assumption is you want the best availability while everything else is presumed working. if the PS blow, sure, that sucks but replace it and bring the system back up. further, if you're this concerned about your data why use a box with only a single power supply?

kind of stupid to even talk about installs with less than 16GB of ram. these days the spend on 'all' that ram is what, $100? for a single stick! who gives a shit what zfs would or wouldn't do with 512MB of ram. your car would perform poorly if you replaced the engine for a harley v-twin and...

with CoW filesystems the fragmentation argument is moot IMO. unless you're for some reason provisioning an aggregate as a LUN then the LUN is just a .... welll its a logical unit. it doesnt physically tie back to sectors directly. meaning, if you make an eager zero vmdk once deployed and in...

because bro, it says gamer on it!

Explain to me why I should spend $350 more for a 512GB SSD? Oh wait .... it is for gamers. Right ... let me buy two.