[HN Gopher] Build a Raspberry Pi CM4 4-Bay NAS with Wiretrustee ...
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Build a Raspberry Pi CM4 4-Bay NAS with Wiretrustee Carrier Board
Author : tobijkl
Score : 103 points
Date : 2021-02-01 10:57 UTC (12 hours ago)
(HTM) web link (www.cnx-software.com)
(TXT) w3m dump (www.cnx-software.com)
| Damogran6 wrote:
| A quick google shows eMMC flash memory for the compute
| module...do you need to mindfully control writing to flash to
| keep something like this from nuking the boot device? Could be my
| choice of storage (whatever $4 buys at Microcenter) but the
| failure mode on my RPi weather station was SD card death. I'd
| hate to rely on that for a NAS.
| manuel_w wrote:
| Since some firmware update released in September 2020 it's
| possible to boot Raspberry Pi 4s from USB. It's a bit
| cumbersome to piece the info together, but it's there:
| https://www.raspberrypi.org/documentation/hardware/raspberry...
| cure wrote:
| You can also boot the pi 4 via kind-of-special-sauce PXE. I
| wish they had just adopted standard PXE (why do we need a magic
| string? What the hell is going on with the three spaces in that
| magic string... Why can't we use the standard PXE way to
| specify the file to load?), but it's better than nothing. See
| https://www.raspberrypi.org/documentation/hardware/raspberry...
|
| [edit: fixed spelling]
| 1MachineElf wrote:
| I would still defer to something with ECC RAM and ZFS for keeping
| my data, but I could see myself using something like this for
| unimportant data and/or serving important data as a read-only
| mirror. Either way, I love that an RPi system will soon come in a
| sweet form-factor optimized for NAS use.
| gitowiec wrote:
| Do not buy ROCK Pi SATA HAT. I own one, and after few months of
| lite usage with 4 SSDs, one channel (two SSD connectors) has just
| died. I just installed OpenMediaVault and configured LVM on 2TB,
| 2x 1TB and .5 TB SSDs, to use it as a home media server.
|
| I recently tried to initialize warranty process (I bought it
| directly from shop.allnetchina.cn with shipping to Central
| Europe) but I got no replay.
| lnsru wrote:
| What warranty process? You are in Central Europe. Seller is in
| China, no distributor in between. Basically you have no rights,
| buy it cheap and forget. Warranty lol. Best case for you is to
| open a case with your credit card vendor or PayPal. But you got
| what you paid for. As I maker in Europe I don't feel bad about
| you, because I must sell everything for insane price with
| included 2 years warranty. While Chinese not.
| [deleted]
| geerlingguy wrote:
| There are a few people currently working on NAS boards based on
| the CM4. A few different approaches in terms of chipsets used and
| performance targets.
|
| I'm trying to track them in this GitHub issue [1] but a couple
| people have remained more or less anonymous as they don't want to
| attract attention too early.
|
| The single PCIe lane is the biggest limitation if you're looking
| for raw speed (350 MB/sec is kind of the upper real-world
| sustained transfer limit), though since the gigabit Ethernet port
| is on a different interface, you can still expect to get 80-100
| MB/sec network transfer speeds.
|
| Something like this, with the right case and OMV or other
| adequate software would be a relatively competitive replacement
| for low-end NASes.
|
| I'm also exploring building a 2.5G NAS with a CM4, but the PCIe
| bus speed limitation is what kinda hamstrings that. Hopefully the
| next Pi revision has a 4x (at least) lane, like the RockPro64.
|
| [1] https://github.com/geerlingguy/raspberry-pi-pcie-
| devices/iss...
| rsync wrote:
| "There are a few people currently working on NAS boards based
| on the CM4."
|
| I continue to appreciate the time and attention you are paying
| to these new boards on your blog and in your comments here at
| HN - thank you.
|
| I am having trouble sourcing maxed out CM4 parts - that is, 8
| GB ram and 32 GB onboard storage[1]. They are either sold out
| until August or October or something silly like that _or_ they
| are only available in 200+ quantity.
|
| Do you have any suggestions as to where I could source those ?
|
| [1] CM4008032, I think ...
| youngtaff wrote:
| Have you come across anyone producing a PoE board for the CM4 -
| just looking for a network port, USB and perhaps SD card
| (similar to a Ubquiti Cloud Key)?
|
| (the Gumstix camera board is overkill for my needs)
| ashtonkem wrote:
| Can POE provide enough power to turn SATA drives? I kind of
| figured for a NAS it probably makes sense to go with a
| regular power supply, especially since it'll be mounted in an
| easy to access location for drive replacement.
| dingaling wrote:
| 802.3at specifies max 30W at the output port at 600mA so in
| theory you could shunt that to 5V and get about 5A after
| losses. Enough to spin up a 3.5" SATA.
|
| But most consumer retail PoE switches are only .3af
| compliant which give 15W minus transmission losses.
| conk wrote:
| 802.3bt can provide higher power, easily enough to run a
| few HDDs but there are few switches on the market that
| offer 802.3bt. Almost nothing available for the
| residential/consumer space.
| rsync wrote:
| "Have you come across anyone producing a PoE board for the
| CM4 ..."
|
| Wait, I thought the official CM4 breakout/dev board (the one
| with the PCIe slot on it) had PoE, right ?
| hnaccount141 wrote:
| Waveshare has one. Haven't used it personally but it seems to
| suit your needs. Though at ~$50 you're probably better off
| just getting a Pi 4B + PoE hat.
|
| https://www.waveshare.com/compute-module-4-poe-board.htm
| PragmaticPulp wrote:
| Why not use the regular Raspberry Pi 4 with the PoE module?
|
| The CM4 is only useful in most cases if you want to use the
| PCIe bus for something else, or if you're trying to embed it
| in another product.
| youngtaff wrote:
| The existing PoE module is noisy as hell, and due to it's
| design it's a PITA to fit a different fan
|
| CM4 on a PoE baseboard offers far more cooling options
| hansihe wrote:
| A regular Raspberry Pi with a cheap POE USB-C splitter from
| Aliexpress works very well.
|
| https://a.aliexpress.com/_mMpvxGV
| PragmaticPulp wrote:
| 80MB/sec is actually quite fine for most NAS applications.
|
| Anyone trying to get 10G speeds out of a high end NAS won't be
| looking to Raspberry Pi solutions right now, anyway.
|
| The real advantage, IMO, is that this helps kick off the
| popularity of DIY NAS solutions based on ARM hardware. It's not
| the first solution in this space, but Raspberry Pi is great for
| taking things mainstream.
|
| I imagine that a few years from now we'll have an even faster
| Raspberry Pi to build a NAS around. These current-gen solutions
| might be just what we need to get the software sorted out
| before the powerful hardware arrives.
| StillBored wrote:
| Its sorta hard to justify those at the moment, since the XHCI
| interface on the base Pi4B is more than capable of maximizing
| the PCIe x1 interface. Basically, you can run a NAS at the
| capabilities of the machine with random USB3 JBODs.
|
| So a $100 5+ bay USB3 JBOD, RPi4B run over the 1G nic, and a
| 64-bit arm64 distro (because rasbian will die with modern SATA
| disks in a larger capacity JBOD) and you have a fairly
| reasonable low end NAS for basically the price of the disks.
|
| (or just plug in 4 of USB3 easystores/etc and save on the
| enclosure).
| 88 wrote:
| I've done this (JBOD with USB 3.0 drives on a Pi 4) and it's
| surprisingly effective.
|
| I can easily saturate the 1G NIC which is more than
| sufficient for my use case.
|
| I don't use RAID or ZFS so neither the CPU or RAM are
| limiting factors.
| ausjke wrote:
| Use RPi for NAS is really a stretch. Just buy those low-power x86
| mini-itx boards with 4GB memory and 4 SATA ports along with
| gigabit ethernet, they're around $150?
|
| Note the smaller size of RPi-etc makes no sense when you're going
| to host 4 hard drives anyways which takes quite some space on
| their own, and you need a decent PSU for the drives too, and a
| solid case as well, etc.
|
| Just buy those ASRock mini-itx boards at newsegg or somewhere and
| let RPi do what it's best at.
| Naac wrote:
| Here's what I want, but haven't been able to find:
|
| I already have a beefy server at home ( it's actually a
| refurbished enterprise workstation, with 24 cores, but read on ).
|
| However it lacks drives. What I ideally want is a a dumb drive
| bay I could buy, and then connect ( somehow ) to my existing
| server, so I could use its CPU and RAM.
|
| I don't want this drive bay to have its own CPU, I just want it
| to hold data and transfer it over some wire. Ideally I would
| achieve close to gigabit speeds requesting data off of this
| server/drive bay.
|
| Some options I've explored are those dumb quad storage bays that
| connect over USB-3. But I was worried about running ZFS over a
| USB interface, as well as potentially parallel read and writes
| with the quality of the USB controller.
| francis_t_catte wrote:
| Hm, rack mounted fiberchannel drive enclosures exist (~$100
| used on fleabay, usually sans disk trays), but that'd require a
| fiberchannel card in your server, direct attach copper (or
| fiber) cabling, and driver finagling.
| njharman wrote:
| Man, SCSI daisy chaining did this, what, 30yrs ago.
| MrGilbert wrote:
| Not sure what your workstation offers, but I bought myself an
| Icy Dock Black Vortex (MB074SP-B) [1]. It's just a case
| (internal 5,25", but that airflow! :D) which fits 4x3,5" drives
| with a 120mm fan in front. Slapped some noise damping feets
| under it. I then bought two low-profile eSATApd to internal
| SATA slotpanels [2] and 4 corresponding cables [3]. Works great
| so far!
|
| And yes, you need eSATA, because the distance between cage and
| machine might be enough to introduce read/write errors. That's
| what I had, because I used normal SATA cables before.
|
| [1]: https://www.icydock.com/goods.php?id=166
|
| [2]:
| https://www.delock.de/produkte/G_61725/merkmale.html?setLang...
|
| [3]:
| https://www.delock.de/produkte/G_84402/merkmale.html?setLang...
| KaiserPro wrote:
| what you need is a JBOD!
|
| Get a decent[1] external SAS adaptor, a SAS cable, and a second
| hand enclosure and bob's your noisy uncle!
|
| something like this: https://www.bargainhardware.co.uk/dell-
| powervault-md1220-sto...
|
| https://www.bargainhardware.co.uk/hp-z800-z820-external-mini...
|
| Your workstation might even have a sas controller on it
| already.
|
| This might be overkill, but even with spinny disks you'll be
| able to get fast random io[2]
|
| [1] subjective. If yours is an enterprise workstation you'll
| most likley be able to get an official SAS controller for it.
|
| [2] well about 10 iops per drive.
| EwanToo wrote:
| You can have a lot of fun with Pi's, but I'm not sure I want to
| build a multi-TB NAS using a Raspberry Pi with a pretty rare
| addon board..
|
| If you do want something like this, I think the ODROID-HC4[1] is
| probably a better option.
|
| 1 - https://ameridroid.com/products/odroid-hc4
| magicalhippo wrote:
| Or just use USB3 - SATA connectors...
| fogihujy wrote:
| Yeah, USB drives with their own power supplies work very well
| with the Pi, but I can imagine high workloads could quickly
| run into problems and/or bottlenecks.
| magicalhippo wrote:
| True, though that bottleneck would mostly be with the Pi
| itself. After all it only has GbE built-in, a single HD
| will easily saturate that for sequential loads or all loads
| for a SSD.
|
| I have 8 disks hooked up to a Pi4 through USB3-SATA[1] with
| external 12V, works quite well in terms of reliability (had
| to turn on quirks mode[2] though). As I mentioned the main
| limitation is the single 1GbE interface, but this is just
| for archive data so.
|
| [1]: https://www.aliexpress.com/item/4000001204302.html
|
| [2]:
| https://www.raspberrypi.org/forums/viewtopic.php?t=245931
| fogihujy wrote:
| Yep, I've also noticed some unreliability when doing
| things like adding a mirror drive; at some point the USB
| controller just seems to fall off the horse and
| everything crashes.
|
| My setup mainly streams video/music over wifi and it's
| rock solid at lower speeds. I wouldn't rely on it for any
| heavy duty storage needs though.
| AnIdiotOnTheNet wrote:
| 2 disks is pretty limited, is there a 4+ disk version of this?
| KaiserPro wrote:
| As a cheap offsite destination for backup,(assuming you have
| multiple destinations) this looks quite compelling.
|
| Although I don't think ZFS is stable on the pi just yet[1], so
| perhaps 4 sata drives is overkill.
|
| I would be interested in a single sata/cm4 carrier board though.
|
| [1]citation needed, I've not really looked...
| smarx007 wrote:
| Nothing against cool RPi projects but be aware that a motherboard
| with a NAS-grade Celeron, like ASRock J4105M, sells for $85 or so
| (but needs RAM, $20 for 4GB roughly). At $105, this leaves this
| carrier board around $35 of budget if you can get RPi CM4 4GB for
| $70. Plus all the doubts about reliability mentioned above.
| jsight wrote:
| I've noticed this regularly with RPi projects. They are
| interesting, but the costs are often at least as high as an,
| often more powerful, x86 equivalent.
| PragmaticPulp wrote:
| Keep in mind that the original goal of the Raspberry Pi
| foundation was directed toward education.
|
| Raspberry Pi has inspired a lot of people to get their hands
| dirty with Linux and embedded systems, even if it's not the
| optimal device from a pure engineering perspective.
|
| In that regard, I'd call the Raspberry Pi a resounding
| success.
| giobox wrote:
| This NAS board is only for the Pi CM4 "Compute Module" -
| that is aimed at enterprise/embedded solutions, not
| education like the standard Pi boards.
|
| I think for this, it's absolutely appropriate to compare to
| other solutions on market. Even the official Pi foundation
| data sheet describes CM4 as for "deeply embedded
| applications".
|
| https://datasheets.raspberrypi.org/cm4/cm4-datasheet.pdf
|
| I would also recommend to carefully examine low-cost x86
| options, they often do come out ahead given they usually
| include all the stuff the Pi Foundation don't supply you -
| a boot volume, case, power supply etc.
| jsight wrote:
| I agree, and I think they are phenomenal at that. There
| isn't anything else that combines the versatility,
| stability, and cost quite so elegantly for single Pi use
| cases for education or light desktop use. I use several VLC
| clients feeding monitors, for example, and they are
| fantastic.
|
| But I also see things like 10 node clusters with a total of
| 40GB of RAM, a bunch of slow cores, and materials costs of
| $500+. That's harder for me to understand, outside of the
| "looks cool" metric.
| 88 wrote:
| Presumably that board will need a separate PSU, RAM, storage
| for a boot drive, etc?
|
| Also it only has two SATA ports so would need a PCIe expansion
| card to match the four ports offered by the Pi board?
|
| I suspect the Pi is also significantly more power efficient?
| sneak wrote:
| I recently picked up two 36 bay sata super micro 4Us on ebay
| for ~$600 each.
|
| The real cost is drives, not the thing you plug them into.
| vladvasiliu wrote:
| There are similar motherboards with 4 SATA ports. I have an
| older Gigabyte GA-J3455N-D3H with 4 SATA ports and two
| gigabit network controllers that cost in the same ballpark as
| GP's model.
|
| RAM is accounted for in GP's description.
|
| Regarding the boot drive, you can either boot from the data
| disks (say via a common ZFS pool or a common raid + lvm) or
| if you're happy with a SD card for the PI, I suppose a small
| USB drive would do the trick.
|
| Regarding the PSU, but you'd need a beefy adapter anyway for
| running 4 drives, which isn't cheap, and there are cheap
| pico-atx PSUs available. I bought a compact case + PSU for my
| board for 50 euros around two years ago [1] that's still
| going strong (although I'm only running a single SSD in it),
| so the PSU alone should be less than that.
|
| There's of course the power efficiency question and I presume
| this setup would be somewhat more power hungry than an RPI.
| The Intel specs for the J3455 give it at 10W TDP. I have no
| idea how much RAM consumes, but it's likely a few more watts.
|
| [0]
| https://www.gigabyte.com/Motherboard/GA-J3455N-D3H-rev-10#ov
|
| [1] https://www.inter-tech.de/en/products/case/mini-itx-
| nuc/itx-...
| tutfbhuf wrote:
| > Regarding the PSU, but you'd need a beefy adapter anyway
| for running 4 drives
|
| How about 2.5 inch drives? I'm thinking about: https://cdn-
| reichelt.de/bilder/web/xxl_ws/A300/RPI_NAS_4XSAT...
| roseway4 wrote:
| I went looking for 2.5 inch NAS/ video recorder drives
| this past weekend and came up empty handed. I'd hoped to
| install them into a mini-pc NVR. The form-factor doesn't
| appear to lend itself to the reliability drive
| manufacturers target for this class of drive. They're
| optimized for high write speeds and very high write
| loads. You can of course use consumer laptop drives in a
| NAS, but write speeds will be lower and reliability may
| suffer.
| tutfbhuf wrote:
| > speeds will be lower and reliability may suffer
|
| 1Gbps is the max. anyways for my home setup, no matter
| how fast the drive is and I have a backup for important
| stuff, I'm not dependent on enterprise NAS drives.
|
| I want: extremely small, low cost and very low watt
| usage.
| vladvasiliu wrote:
| The main issue is that larger capacity drives (> 2TB)
| seem to be SMR in the 2.5" range. I've looked and haven't
| found a PMR one (except maybe for "enterprise" drives
| which cost more than an SSD). Depending on how you want
| to use those drives, you may be having a bad time. For
| example when rebuilding a ZFS pool. [0]
|
| If your use case / setup allow you to deal with the
| complete loss of your array (which, granted, is not 100%
| likely) or don't use ZFS, then I suppose you could look
| at Seagate's 2.5 Barracuda line. They're relatively cheap
| given their capacity and I don't think they're
| particularly unreliable in and of themselves.
|
| [0] There are many people talking on the internet about
| ZFS performance with SMR disks. Here's a quick find:
|
| https://arstechnica.com/gadgets/2020/06/western-digitals-
| smr...
| vladvasiliu wrote:
| Regarding power usage, I'm not very familiar with how
| those drives compare [0]. To be honest, power consumption
| was of interest for the build I was talking about because
| I wanted it to be fanless (I actually ended up adding a
| very silent fan, just for peace of mind). For my NAS
| needs, I'm building in a recycled server, so power usage
| isn't as much of a concern.
|
| However, I did look for 2.5" drives (the server comes
| with a 2.5" backplane) and there don't seem to be many
| "consumer" drives in this format that are both high
| capacity (>2 TB) and non SMR (I'll be running ZFS). I'm
| also not looking to spend very much, so SSDs are out.
|
| [0] Seagate specs for 2.5" Barracuda:
| https://www.seagate.com/www-
| content/datasheets/pdfs/barracud...
|
| The startup current is 1.2 A under 5V. So if you're
| running four of them, you'll need 24 W just for the
| drives. Not sure if the "cheap" enclosures are able to
| stagger drive startup.
|
| My Gigabyte motherboard cannot, so it would require a PSU
| large enough to drive both the board (CPU + RAM + etc)
| and the drives for a little while. So with four drives,
| you'd be looking at 50 W to be sure it fits.
| m463 wrote:
| I was thinking the same thing.
|
| I love the pi and have many of them. But their beauty seems to
| come out at the edge where things are low power and they
| replace nonsense IOT devices.
|
| To replace a server or desktop is a stretch. That's where using
| a pi is death by 10,000 papercuts. The super-competitive low
| end PC market gives you so many things for free, like good
| power supplies, a wide variety of cases and silly things like
| power switches and a clock with a battery.
| Nursie wrote:
| That looks a lot like the mainboard from the Western Digital
| Sharespace I had about 10 years ago.
|
| I was recently wanting a NAS again, but came to the conclusion
| that the best bang for your buck was just grabbing a cheap mini-
| ITX board and processor as the price of dedicated NAS boxes was
| not much different and was far less flexible. Then you would have
| full-fat sata, even m2 for a boot drive, whatever RAM you wanted
| etc.
|
| I know it's not a very exciting solution...
| znpy wrote:
| I wouldnt trust my data with this kind of devices. There's
| nothing wrong per se, but I have my doubts about how easy you can
| find replacement parts if something breaks in, say, a year or
| two.
|
| If you really depend on your data and want it to be safe, i'd
| recommend spending the extra money and either getting a proper
| nas (synology/qnap) or go the proper diy way (aka an x86 box and
| truenas/unraid).
|
| you really don't want to be in the position where you absolutely
| need your data but the replacement parts are two-weeks far in the
| future because they're travelling via snail mail or worse,
| relying on 2nd-hand spare parts off ebay.
|
| edit: not to mention, the gigabit ethernet port is a bottleneck.
| you would probably hitting the bottleneck even by using four
| rotational disks.
| pmiller2 wrote:
| If you're concerned about availability of parts, why not just
| keep some cold spares around? It's not like we're talking about
| expensive and specialized hardware here.
| dsr_ wrote:
| As a household backup device, rather than a NAS, this is
| actually pretty good.
|
| Use mdadm RAID-10 across four spinning disks, or RAID-1 across
| a pair and have two slots free. If the board fails, you can
| plug them into any other Linux box with SATA ports available.
|
| Most people have no better than 1Gb/s ethernet available in
| their house anyway. One expects a backup or restore to take a
| while, but also not to be interactive.
|
| It's probably cheaper to repurpose an old desktop, but this
| will probably use less power, even when both are asleep.
| znpy wrote:
| > Most people have no better than 1Gb/s ethernet available in
| their house anyway
|
| This is partially true. Most people have no better than
| 1Gb/sec _per single computer_. That means that a single pc
| using the full 1Gb /sec would saturate the nas network I/O
| and degrade performances for all other clients.
|
| Which may or may not be okay... You just know to be aware of
| that.
| dsr_ wrote:
| I keep saying backup, and other people keep re-saying NAS.
| These are different.
|
| A NAS can serve as a backup.
|
| Not all backups are suitable as a NAS.
|
| Now, let me restate: Most people have no networks capable
| of significantly more than 1Gb/s between two hosts in their
| house. Complaining that a backup server is also attached at
| 1Gb/s is not going to cause people to discover that they
| have already purchased 10Gb/s switches, or LACP switches,
| or even acquire 2.5Gb/s switches.
|
| Of the people who have 10Gb/s switches in their house,
| approximately none of them are going to look at this very
| low cost, low performance, low power system and say "yes!
| this is my new primary backup system!"
| toast0 wrote:
| LACP switches aren't too bad. I picked up a pair of
| 16-port switches with vlan and LACP (1-4 ports) via web
| interface for around $100 combined.
|
| 2.5G or 10G switching is still too expensive for me.
| IgorPartola wrote:
| ECC and zfs/btrfs I think are a must for any data you care
| about. RAID 1 isn't going to save you when you can't tell
| which copy of the given block is the corrupted one.
| dsr_ wrote:
| It completely depends on what your specific circumstances
| are, and something is always better than nothing.
|
| (Also, you aren't getting ECC RAM at this price point, no
| matter what.)
|
| What's a good use case for this? A house with a few
| laptops, a desktop and one server. Everything uses the
| server as their datastore. The server runs ZFS, but even
| ZFS can run out of luck, so you send over a snapshot to the
| backup device every day or three. It's insurance.
| njharman wrote:
| If you absolutely need your data its not only on one device.
| whalesalad wrote:
| If you aren't using hardware raid or another disk management
| tool that locks you in to one manufacturer or worse one unique
| controller - you should be able to take your disks to any other
| machine and rebuild your array.
|
| At least, that's how you should be constructing a home NAS if
| that's what you're doing.
|
| The same situation can arise with a popular/managed solution
| like qnap/syno.
|
| I have a DS918 and really love it (it's one of those set it and
| forget it machines) but I don't totally know how it works. It's
| Linux of course, but it's sorta a black box.
|
| So I think there is a lot to be said for DIY as long as you are
| aware of the drawbacks and engineer around them accordingly.
| m3at wrote:
| For the DIY way, I recommend the Helios64 if you're looking for
| an ARM SBC with a complete NAS package: https://kobol.io/
| znpy wrote:
| I have seen that, it's a really nice alternative.
| entangledqubit wrote:
| The 12V/5A power supply seems a little undersized for 4 x 3.5 HDD
| startup. I suspect that it's fine if the drives are started
| sequentially but the drives will probably want to pull more than
| 5A if they're all starting simultaneously. Possibly something to
| watch out for.
|
| 5A should be plenty for normal post-start operation.
| the-dude wrote:
| Title is misleading?
|
| End of the article : _There's close to no information about the
| software right now, and the hardware is not available yet_
| gorgoiler wrote:
| Nice, but the Gen10 HP ProLiant Microserver is my NAS platform of
| choice.
|
| It supports ECC and has 4 cable-free swappable bays plus space
| for an SSD system drive in the top. The bolts-as-caddy system is
| also a great idea.
| rsync wrote:
| My memory is hazy now but there was something weird/screwy
| about the previous gen Microserver ... like, you couldn't use
| all four SATA drives at the same time as booting from the
| onboard ? Or something ?
|
| How is the gen10 ? Can I use all four SATA drives for my raid
| array but still have a SSD/m.2 boot drive ?
| gorgoiler wrote:
| I actually never took mine apart to put the SSD in the top
| slot, I only know it's possible. (There is an additional
| mounting kit to support it on the Gen10.)
|
| For me, three mirrored ZFS 4TB drives are all I needed for my
| local storage to be available and resilient. The fourth SATA
| slot is the SSD in a cradle.
|
| My long term bet for safety is offline USB mirrors on-site,
| Borg off-site to rsync.net (thanks!) and tarsnap off-site for
| the smaller stuff.
|
| Maybe one day I'll be brave and use ZFS to mirror the content
| to rsync.net? I haven't upgraded beyond ZoL 0.7 yet but if I
| did can I replicate an encrypted pool to you without giving
| you the keys?
| [deleted]
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