Search results

Low areal density, and Advanced Format (4K) sectors.... Hitachi Deskstar 5K4000 Specs (HDS5C4040ALE630) Interface - SATA 6Gb/s Max. areal density (Gbits/sq. in) - 443 Sector Size - 512e Data buffer - 32MB Media transfer rate - 162 MB/s Error rate...

> device inquiries that logical sector size is 512 and physical sector size is 4K. I'm not a fan of 4k sectors, even if they do emulated 512 sectors and are 4k aligned. http://zfsday.com/wp-content/uploads/2012/08/Why-4k_.pdf But I'll also admit everything is 512e these days, so we...

I would consider 512n sectors desirable for any FS. WD RED and Seagate NAS are 512e. http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks

> My biggest worry would be the hermetic seal. well, if the pressure is the same inside and out there isn't much "push" to get out other than He is lighter than air (78% nitrogen + 21% nasty oxidizing agent) so its low risk, but I won't be buying any used 6T drives from a Denver datacenter :-)...

r151008f contains the igb 2.3.8-ish driver that supports Intel i210 https://github.com/illumos/illumos-gate/blob/master/usr/src/uts/common/io/igb/igb_main.c grab it from http://rob.com/lancair/2013.12/igb.tar.bz2 don't forget to bootadm update-archive root@OmniOS:~# beadm list BE...

its not the wattage rating of the PS, its how many of thoese watts are getting to the drive planes, my tiny PS has 5 runs of copper to the rails and it handls my 12 drive, 360 watt startup fine

> 860W which has 3+3+2 molex cables and norco 7to1 cable. use the 7to1 to tie all the planes together and tape off the feed. it would be better to have more than three wires from the PS, but plug the three you have into every other norco plane.

http://www.supermicro.com/products/chassis/3U/837/SC837E16-RJBOD1.cfm 3U JBOD chassis solution: Total 28x (16 front + 12 rear) 3.5" Hot-swap HDD bays; 6Gb/s SAS2 Expander Backplane

rsync splits the file to be sent into fixed non-overlapping chunks and only sends the parts that fail a md5 hash rsync with -z uses Lempel–Ziv 1977 compression (gzip) rsync with ssh uses Diffie-Hellman key exchange encryption rsync with -y looks for a missing file that has an identical...

Not trying to hijack this thread, or dampin enthusiasm, but a headless solaris box with apache <--> ipad interface is a cool easy idea, but I'm not sure it would cover enough problems to be "useful". perhaps a slight change of focus to no touch keyboard and mouse and work on a program that...

I run http://jperfmeter.sourceforge.net/ on my solaris nas display, and it monitors several of my other solaris boxes.

Green drives keep the noise down (little cooling required) and don't need much power, so based on this perhaps a XFX Core Edition PRO650W

> is the 4224 the 4220 with 4 more drive bays? yes, at $88 to $100 cheaper. you will be happy, Congrads! I also went from CM stacker with 5 in 1 to Norco. > I don't really like hotswap bays - and need a vibration dampening on all HDs. this is also an issue with some of the 5 in 1...

Don't we love peer pressure? so the debate is 4216 vs 4224 and I second hotzen's vote for the 4216. 1) its $50 cheaper. 2) The cost in compute power to support the extra disks is huge and not needed at home 3) The cost in noise (cooling) to support the extra disks isn't good for the home 4)...

Note on Samsung F4 drives, the temp sensor works on s/n starting with H7JD5B102xxx (sample of two) but not with those starting with H7J1SZ901xxx (sample of two)

I sit next to 11disks with 5 1200rpm 120mm fans. The fans are silent, but the air moving through the case isn't. There is a sucking sound that isn't unpleasant, but when the machine is off, one notices the lack of noise. I've plugged the 5 fans into the MB, so its BIOS slows the fans by another...

Norco RPC-2212 is a new 2U case that uses three of the 4224 backplanes, their most recent design. http://www.newegg.com/Product/Product.aspx?Item=N82E16811219040

rprade's outstanding description of his new server included its wattage load: which motivated me to look at mine which was recently rebooted. (long story) looking at the WattUp's min/max rather than the graph, the resting load of my mac pro and Q6600 PC is 240 watts. So that...

> it does look like a professional made solution thanks, but its just a sheet of AL folded over as seen on page 8 of this thread. For the least noise, why not skip the extraction fans entirely, the graph on page 9 shows one can keep 10 black drives under 50° (drive limit is 60°) with just...

buying 2+8 disks for one vdev to copy your old stuff, then add the old drives plus one new one for a second 2+8 vdev does get you going cheaply, but all the new writes will be going to the second vdev so its not exactly balanced going forward. perhaps a stripe of 10 disks, copy old...

Nice PWM fans hyperion007. Pls give us a noise report when built. My Supermicro bios isn't as aggressive as some of my HP blades. But once booted the sucking sound from 5 three pin fans does goes down a bit :-)

interesting, they added a header on the non power side of the backplane.

I used the holes that put the mid plane closer to the front of the case, (one can see the rear mounting holes in this photo) but moved the fans to the back of the mid plane. With the fans on the back one can more easy plug them into the MB too.

Renegate1666, Nice job on the sata power plugs! but I'm confused what the lower card is that attaches to the sata card... can you help me? raid battery?

I'm sorry to hear about your smoke. From your photo it looks like the rectifier. Is there any chance odditory is close and a plug got put in upside down or a short on one of the sas 3.3v pins?

I also installed the new fan bracket

If your target market is inside a Norco case, chances are there is already a MB in there, but I bet the PS has an unused video card PCIe 12v plug with lots of switched power. A few rectifiers would yeald +- 3.3v but I bet the HP SAS Expander doesn't even need that. (tape will tell, a job for...

wow, that's nice jmroberts70! my plane isn't that neat. but I'm alittle confused why you made a header for the ATX power?

> They do this not via HBA's but via expanders. true.. but like netapp, they use an interpret card on each drive tray. this card issues the GUID and the buss disconnects (NCQ) plus the dual ports and such all in sas to the expander. No sata tunnel across the expander. EDIT: oops, the photo...

> Sun's OWN JBOD's use expanders, yup.... but they don't sell sata disks for them > and have for some time and supported SATA disks in them as well. all expanders "support" sata drives, but sun and nexenta don't. BTW, Garrett is VP of engineering at nexenta and one of three people who...

> while running two scrubs ... might have killed an array out of spite with sooo many drives spewing perhaps your PS isn't up to the task... BTW, the mpt driver isn't zfs, its another group..

The first hr is steady state with all five 1200rpm slipstream fans. The second hr has the case top covering the mid plane and back plane to simulate no rear fans. The third hr is with no case top. and the last two hrs are with the case top replaced. It looks like one needs to run each state for...

Old case New 4224 Rise during scrub 3° 2° Delta T 6° ~5° Max T 48° 42° Resting Max T 45° 40° So with 5 120mm 1200rpm Slipstreams there is an overall reduction and increased control for the 10 black disk. The new green...

Like others have said, perhaps ZFS doesn't lead to the toxicity Garrett refers to, it identifies bugs present in all expanders tunneling sata because it exercises issues more than anything else. netapp uses an interpret card at each sata disk for their sas shelf. Perhaps someone can think of a...

The PS has 5 drive molex feeds, I use them all to maximize copper to backplane. sweloop64 is correct, graphs from smart, a line for each disk. I'll be ordering the Norco 120mm midplane, less holes than mine. the brown/gold thing is a south bridge cooler (xmas gift) > X8SIL-F+x3440 that's a...

A few notes from my build: The disk powered green LED is perfect brightness. The disk activity blue LED is fast acting, but dim. Three good (68.54 CFM @ 24 dB(A) 1200rpm Slipstream) with nothing in the back should be enough for most green disk loads. The flow out with this setup is...

We agree deltaP is a big deal in a restrictive case like the 4224. Most high deltaP fans are centrifugal or operate fully turbulent. Once cavitation starts, the noise goes out of control. My goal is to keep the air attached via large holes. Might be imposable, we will see. It takes 7h32m to...