Is it reliable to switch an old laptop to a NAS? I installed Feiniu on an outdated ThinkPad and handed over the backup in three months

not touch: First, with only 100Mbps Ethernet ports. A 100Mbps network port means internal network file transfers capped at 11MB/s, which is ten times slower than mechanical hard drives, and the NAS is basically half useless; Second, only USB 2.0 , with external hard drives up to 30MB/s, which is slow even for storing movies; Third, machines over ten years old CPUs that only support 32-bit or motherboards that don't recognize UEFI boot, so Feiniu can't install them, and even with old AMD APUs, the heat won't be controlled. How to check if the network port is 100Mbps or gigabit? Check the network card model in Device Manager, or directly search for your laptop's spec page. I previously wrote about a for recognizing gigabit and hundred-megabit ports, the method is universal.

installing the system is simpler than you think—it only takes half an hour

system, I chose Feiniu not for any other reason but because it's free, friendly to older hardware, and has a graphics backend. I also struggled with Black Synology, but Black Synology had to choose the right guidance and network card, I had to do that hardware setup before—it was exhausting. Feiniu's requirements are simple: 64-bit CPU plus UEFI boot, starting at 2GB of memory, and 8GB of space on the system drive. This threshold has been passed with laptops closed since 2013.

steps are really simple: download the image from Feiniu's official website and use a writing tool to load a USB drive of 4GB or more; When the laptop boots, keep pressing F1 to enter BIOS (E480 is F1; try other brands like F2/F10/Del), change the boot mode to UEFI and turn off Safe Boot; Plug the network cable into the main router's LAN port, boot the USB drive, and enter a graphical installation interface. Select the E480's built-in 256GB SSD as the system drive, click install, and it takes just over ten minutes to install. Unplug the USB drive and restart, and then you can remove the monitor and keyboard and mouse completely—from then on, all operations will be done in the browser. Enter IP or fnos.local to go to the backend, just like operating the finished NAS.

here's a detail: after installation, the first thing to do is turn on SSH in the backend, since there are many places to use it later. Also, although the system only uses 8GB, updates and cache will gradually lengthen. When partitioning, I gave the system 64GB, and formatted the remaining SSD space into storage, which is perfect for storing Docker images and downloading temporary files.

laptop as a NAS, I've fallen into all three exclusive pitfalls

system setup is just warming up; the real torment is the difference between a laptop and a NAS compared to a desktop. I missed a single one of the three pitfalls.

first pitfall: lost contact as soon as the lid was closed. default setting: when the lid is closed, the system will go into hibernation; NAS sleep equals a crash, and all apps on the phone will go offline. The solution is to connect SSH and modify a configuration file at the /etc/systemd/logind.conf path, find the few lines in HandleLidSwitch, remove the comment symbols, and change them to ignore. Focus on changing two lines: HandleLidSwitch = ignore and HandleLidSwitchExternalPower = ignore. The former closes when using batteries, the latter closes when plugged in. NAS is plugged in year-round, and the second row is the main force. After the changessystemctl restart systemd-logind to activate the configuration, close the cover, the screen turns off, but the network is still on—that's the graduation process. I've even encountered something even more sneaky: an old Dyan device still broke after modifying the configuration, and eventually found out there was a 'Close Lid' power option in the BIOS, so you had to go into the BIOS and close it again—both places had to be checked.

second pitfall: USB hard drive enclosures are a weak point. laptop has only one hard drive slot, and the SSD is occupied by the system. The 4TB Cool Wolf can only insert USB 3.0 enclosure plugins. Everything was fine during the day, but at night I backed up and wrote for two hours straight. On the third day, a USB disconnection popped up in the dmesg log, and the drive disappeared from the system. This is the pitfall of USB power supply and cooling: 2.5-inch drives rely on the little power from the USB port, and after continuous read/write sessions, they get hot and shaken and quickly shut down. I replaced it with an easydrive cable with 12V independent power supply and a vertical hard drive tray. The drive didn't need a box to sit quietly, which greatly improved cooling. After that, the drive didn't fall out again for a month. If you're using a 3.5-inch drive, remember to choose a box or stand with a dedicated power supply; relying on a USB port won't work at all. After mounting the disk, formatting and creating storage space just like the process I wrote about attaching the second hard drive—just copy it exactly.

third pitfall: The wireless network card is most likely just for show. E480 that Intel wireless network card was recognized by Feiniu, but the driver was missing and couldn't connect. This pitfall only becomes fatal when you plan to put the device in a room without network cables—NAS should be wired, and where cables can't reach, plug in a USB gigabit network card for 30 yuan. Don't expect wireless NAS to run on a NAS; latency and speed are not suitable.

electricity bills and speed, laptops surprisingly don't lose money

Before

upgrade, I thought laptops would lose power consumption to dedicated NAS, but actual tests have proven the opposite. I connected the metering socket for a few days and tested it: screen off, hard drive sleep, standby mode 8W; For daily light loads, the album backend is indexed, and occasionally backup comes from a phone, around 110,000 yuan; At night, with all backup tasks running and Cool Wolf running, the maximum is only 180,000. For comparison, my N100 main unit has a light load of 17W, the full data from the electricity cost test back then; A friend converted an old desktop NAS easily goes above 45W. The entire low-voltage platform is designed to save power, so switching to a NAS based on this actually gives you a better advantage.

the math: with an average of 110,000 yuan for a year, 96 kWh for 53 yuan, about 0.5 yuan per day. A desktop NAS upgrade costs nearly 200 yuan a year, so the money is enough to buy a second-hand SSD.

speed, gigabit Ethernet ports are both the baseline and the ceiling. Internal SMB file copy stabilizes at 106MB/s, gigabit port feeds to the max; The Cool Wolf in the USB 3.0 box continuously writes at 120 to 140MB/s, with the drive faster than the port, which is sufficient. By the way, hard drive sleep is harder to manage on USB drives than internal drives. when I wrote about NAS hard drive sleep, I looked up the method for stealing drives and I used it here, but when the USB drive is powered off and wakes up, you have to re-enumerate it, which is sometimes a bit slow, so I put up with it.

there's another great treat worth mentioning: the battery. A 48Wh battery mounted on a 10W load can last over four hours even when powered off, effectively having a built-in UPS. A proper NAS with a UPS costs three to four hundred yuan. my main phone's UPS selection could fill an entire article, so I'll skip the laptop here. But to be honest, the battery will swell after being plugged in for years, which is a safety hazard. My approach is to unplug the power every two months, use it until it's about 30% left, then plug it back in to loosen the battery's strength; If you ever find the keyboard bulging in the middle or the touchpad won't work, don't hesitate—just remove the battery immediately. The laptop with the battery removed will still run the NAS, just losing the UPS as a perk.

how does it compare to a proper NAS, and who is suitable to stop here

have been praising for a long time, but the flaws should be laid out on the table, or else it will mislead people. First, there's no drive expansion , so you'll have a built-in drive and USB plugin for life. Running multiple drive RAIDs is impossible. If you want to play with a four-drive setup, you still need to buy a proper NAS. I've written an article about how to choose drive . Second, has no redundant and runs a single drive bare, so I position it as both a downloader and backup device—qBittorrent for preservation, Jellyfin for TV streaming, and also as a Time Machine backup machine. The main data is still on the N100, with one copy for important files at each end. The principle of backup is a classic topic on this site. Third, reboot had to rely on web . I removed both the screen and keyboard, and when problems occurred, I had to go to the browser and click restart. Fortunately, I had restarted twice in three months.

What can

run? 8GB RAM runs Jellyfin, QBittorrent, and album backups, plus spare space. How to install Jellyfin—I've written a tutorial on how to install Jellyfin, the one-stop article from Docker to TV end I just copied it; The complete setup for the download machine includes conservation and speed control, which qBittorrent in that . To put it bluntly, the software ecosystem is exactly the same as the legitimate Feiniu NAS, only the hardware ceiling is the difference.

give a final order and follow the steps to rework: check if the network port is gigabit, this is the life-or-death line; Check if the memory can reach 8GB; if not, add a second-hand one first; Install Feiniu on a USB drive, enable UEFI in BIOS, and disable safe boot; SSH is set to cover closure; only if the cover is closed and connection is not lost is the installation complete; Choose a USB drive with a box with independent power supply and build a dedicated storage space; Finally, set a check-up date for the battery and discharge it once every two months. The whole set costs nothing, and at most thirty yuan per easy-drive cable. That E480 now stood in the corner of the TV cabinet, closed up, not a single light on, quietly acting as its second NAS—an old friend who had been gathering dust for two years, now back to work.