Raspberry Pi Storage

Raspberry Pi Storage — No More SD Card Death

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SD cards and 24/7 server operation are a bad combination. This page explains why, and guides you to the right alternative for your setup — step by step.

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Why SD cards fail

Modern SD cards survive 3,000–10,000 write cycles per block. That sounds like a lot. It isn't.

What writes to the SD card?	How often?
Docker container logs	Multiple times per minute
SQLite database (trips, charging sessions)	Every 30–60 seconds
System logs (/var/log)	Continuously
OS swap	Under memory pressure

Realistic outcome: Under Tesla Carview's write load, a typical SD card lasts 3–18 months, then:

• Filesystem corruption → system won't boot
• Data lost (backups help, but the damage is done)
• Worst case: silent, undetected data corruption

Bottom line: SD card is fine for a quick test. For permanent operation, always switch to SSD.

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Decision tree — which option suits you?

What Raspberry Pi do you have?
│
├── Raspberry Pi 5
│     ├── Want the best performance and longest life?
│     │     → Option B: NVMe SSD via M.2 HAT+ ⭐ recommended
│     └── Simple, cheap, no assembly?
│           → Option A: USB SSD (also excellent on Pi 5)
│
├── Raspberry Pi 4
│     ├── Homelab with Gigabit LAN + existing server?
│     │     → Option C: PXE network boot (no local storage at all)
│     └── Normal home network?
│           → Option A: USB SSD (simplest solution)
│
└── Raspberry Pi 3 or older
      → No longer supported (32-bit ARM). Tesla Carview requires
        a Pi 4 or 5 — see Installation.

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Option A: USB SSD (simplest for all Pi models)

What you need: A portable SSD or a 2.5" SATA SSD + USB adapter.

Recommended hardware (2025)

Product	Approx. price	Notes
Samsung T7 (500 GB)	~€55	Great, but Pi 4 needs quirk fix (→ below)
Crucial X6 (500 GB)	~€45	Reliable, no quirks
WD My Passport SSD (500 GB)	~€50	Well tested on Raspberry Pi OS
2.5" SATA SSD + UGREEN USB 3.0 adapter	~€35–50	Very reliable for Pi 4

Avoid cheap no-name USB-SATA adapters — they often have UASP compatibility issues on Pi 4. Brand adapters (UGREEN, Inateck) are more reliable.

Step 1: Write the OS to the SSD

1. Download Raspberry Pi Imager and install it on your regular computer
2. Connect the SSD via USB to your regular computer
3. Open Imager:
   • Device: choose Raspberry Pi 4 or 5
   • OS: Raspberry Pi OS Lite (64-bit) — no desktop, more resources for Docker
   • Storage: your SSD
4. Click the ⚙️ gear icon → pre-configure:
   • Hostname: e.g. tesla-pi
   • Enable SSH: yes
   • Wi-Fi credentials (if not using Ethernet)
   • Username + password
5. Click Write — done in ~5 minutes

Step 2: Enable USB boot on Pi 4 (one-time, Pi 5 skips this)

Pi 5 boots from USB out of the box. Pi 4 needs a one-time bootloader update:

# Boot from an SD card briefly, then run:
sudo raspi-config
# → Advanced Options → Boot Order → USB Boot → Finish → Reboot

Then: remove the SD card, plug in the SSD, power on → Pi boots from SSD.

Step 3: Samsung T7 quirk fix for Pi 4 (if needed)

If your Pi 4 gets stuck with the Samsung T7 (flashing red LED, won't boot):

# Open this file — must remain a single line!
sudo nano /boot/firmware/cmdline.txt

# Append at the end of the line (space before it):
usb-storage.quirks=04e8:4001:u

# Save (Ctrl+O, Enter, Ctrl+X), then reboot:
sudo reboot

This disables UASP for the T7 only. Performance is still 5–10× better than an SD card.

Step 4: Install Tesla Carview

curl -fsSL https://raw.githubusercontent.com/KnevS/Tesla-Carview/main/deploy/setup.sh | bash

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Option B: NVMe SSD on Raspberry Pi 5 (best performance)

The Pi 5 has a PCIe connector. With an M.2 HAT you get NVMe speeds of 400–900 MB/s — vs. ~20–90 MB/s for SD cards.

Hardware you need

Component	Recommendation	Approx. price
Raspberry Pi 5 (4 GB or 8 GB)	—	from €60
Official Raspberry Pi M.2 HAT+	2230 or 2242 form factor	~€15
or Pimoroni NVMe BASE	Compact, no spacers	~€20
or Pineberry HatDrive Bottom	Mounts under the Pi	~€25
NVMe SSD M.2 2230 or 2242	WD SN350, Kingston NV2, Samsung PM991	€25–60

Form factor is critical: The official M.2 HAT+ supports only 2230 and 2242 (short SSDs). Standard 2280 SSDs (the common long ones) don't fit. Third-party HATs often support 2280 — check before buying.

Step 1: Assembly

1. Slide SSD into the M.2 slot at an angle, then press flat
2. Secure with the included screw
3. Connect the FFC ribbon cable (HAT ↔ Pi 5 PCIe connector)
4. Mount HAT onto the Pi 5 GPIO header

Step 2: Write OS to the NVMe

Easy method: Boot from SD card, then write to NVMe from there:

sudo apt update && sudo apt install rpi-imager -y
rpi-imager
# Select NVMe SSD as target → write

Alternative: Use a USB-NVMe adapter on a regular computer and use Raspberry Pi Imager as in Option A.

Step 3: Set boot priority

sudo raspi-config
# → Advanced Options → Boot Order → NVMe/USB Boot
# → Finish → Reboot

Remove SD card → Pi boots from NVMe.

Step 4: Optional — enable PCIe Gen 3

Pi 5 defaults to Gen 2 (~400 MB/s). Gen 3 (~900 MB/s) is unofficial but usually stable:

sudo nano /boot/firmware/config.txt
# Add at end:
dtparam=pciex1_gen=3

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Option C: PXE Network Boot (for homelab enthusiasts)

PXE boot means the Pi has no local storage at all — it boots entirely over the network from a central server. Great when:

• You manage multiple Pis
• A NAS (Synology, TrueNAS) or mini PC is already on your network
• You prefer centralised backups and management

Requirements:

• Gigabit Ethernet (Wi-Fi is too slow/unreliable for PXE)
• An existing server on the network that can run DHCP + TFTP + NFS
• Raspberry Pi 4 or 5

Quick setup overview

On the PXE server (Debian/Ubuntu):

sudo apt install dnsmasq nfs-kernel-server -y
sudo mkdir -p /srv/tftp /srv/nfs/rpi

# Add to /etc/exports:
echo "/srv/nfs/rpi *(rw,sync,no_subtree_check,no_root_squash)" | sudo tee -a /etc/exports
sudo exportfs -ra

/etc/dnsmasq.conf (proxy DHCP — works alongside your existing router):

port=0
dhcp-range=192.168.1.0,proxy
log-dhcp
enable-tftp
tftp-root=/srv/tftp
pxe-service=0,"Raspberry Pi Boot"

The full rootfs-copy and NFS configuration is extensive — follow the official guide: Raspberry Pi PXE boot documentation

Is PXE worth it for you? Only if you already run a homelab with central storage. For a single Pi, USB SSD or NVMe is simpler and equally robust.

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Migrating from SD card to SSD (no data loss)

Already running Tesla Carview on an SD card? You can migrate in about 20 minutes without losing any data.

Step 1: Clone the SD card to the SSD

# Connect SSD via USB to the running Pi
# Identify the target disk (usually /dev/sda):
lsblk

# Clone (Pi can keep running):
sudo dd if=/dev/mmcblk0 of=/dev/sda bs=4M status=progress conv=fsync

# Resize the partition to use the full SSD:
sudo parted /dev/sda resizepart 2 100%
sudo resize2fs /dev/sda2

Step 2: Switch boot source

Enable USB boot as described in Option A, Step 2, then remove the SD card.

Step 3: Verify

findmnt /
# Should show /dev/sda2 or nvme0n1p2, NOT mmcblk0p2

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Comparison

	SD card	USB SSD	NVMe (Pi 5)	PXE
Longevity	❌ Months	✅ Years	✅ Years	✅ No local wear
Setup effort	✅ Minimal	✅ Low	🟡 Medium (HAT assembly)	❌ High
Cost	✅ ~€10	🟡 ~€35–60	🟡 ~€50–100	✅ €0 (if server exists)
Read speed	20–90 MB/s	200–500 MB/s	400–900 MB/s	LAN speed
Recommended for	Testing only	Pi 4 permanent use	Pi 5 permanent use	Homelabs

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FAQ

Can I leave the SD card in after switching to SSD?

Pi 4: Yes — if the SD card isn't bootable, the Pi ignores it and boots from USB. Pi 5: Yes — after boot order configuration, NVMe/USB takes priority.

How large should the SSD be?

60–120 GB is plenty. The Tesla Carview database grows to a few hundred MB over years. Buying slightly larger is cheap and gives the SSD controller more blocks for wear levelling → longer life.

Can I use a USB flash drive instead?

Technically yes, but not recommended. Flash drives have no wear levelling — they die faster than SD cards. The price difference to a cheap SSD is minimal.

What about power cuts?

SSDs are more resilient than SD cards during sudden power loss, but not immune. Use the built-in backup: Admin → Data → Backup regularly, or enable automated nightly backups.

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Useful Links

• Raspberry Pi Imager
• Official M.2 HAT+ documentation
• Raspberry Pi PXE boot guide
• raspberry.tips: Boot Pi 4 from USB SSD
• raspberry.tips: Pi 5 NVMe setup + benchmarks

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