Lab · Sheet 02

The server.

A Dell PowerEdge R720xd that thinks it’s an R720. The RAID card is gone, and ZFS sees every disk.

Hover or tap anything numbered.

TD-LAB-02 · The server Dell PowerEdge R720xd as built. Orthographic tab: top view with the cover off, front, rear, detail B of front bays 0 to 7 with the five drives, detail C of the rear flex bays, and the three ZFS pools. Exploded tab: the server taken apart, with the drives pulled out. Before / After tab: the storage controller, cables and rear drives before and after the 2026-09-28 swap, with the data path under each. 1234567812345678ABCDEFABCDEF TD-LAB-02 TITLE BLOCK AND NOTES BELOW GIGASTONE 256 GB GIGASTONE 256 GB MX500 500 GB MX500 500 GB MX500 1 TB 01234567 1 2 3 4 5 RPOOL FAST BULK DETAIL B SCALE 1:1.5 ST300MP0004 EMPTY BAY 24 BAY 25 PSU 1 PSU 2 6 21 DETAIL C SCALE 1:2 RPOOL 3-WAY MIRROR · ≈ 220 GiB 7 BAY 0 · GIGASTONE 256 GB BAY 1 · GIGASTONE 256 GB BAY 24 · ST300MP0004 BOOT AND ISOS FAST 2-WAY MIRROR · ≈ 450 GiB 8 BAY 2 · MX500 500 GB BAY 3 · MX500 500 GB VM DISKS BULK ONE DISK · ≈ 930 GiB 9 BAY 4 · MX500 1 TB SCRATCH AND SANDBOXES ZFS POOLS AS BUILT CPU 1CPU 2FAN WALL · 6 FANSSHROUD24 DIMM SLOTSRISER 2RISER 3BACKPLANE · EXPANDERA1ABHBA3302425RISER 1 10 12 11 684 755 TOP VIEW · COVER OFF SCALE 1:4 01234567891011121314151617181920212223 B 482.4 87.3 2U FRONT SCALE 1:4 NIC 1 → GATEWAY · 1 GbE 13 RISER 1 RISER 2 RISER 3 C REAR SCALE 1:4 AS BUILT SWAP DONE · 2026-09-28
Revisions
RevDescriptionDateBy
AFirst issue2026-09-28TD
BAs built2026-09-29TD
Project
HOMELAB
Title
The server
Scale
AS NOTED
Units
mm
Sheet
2 OF 3
Rev
B
Date
2026-09-29
Drawn
TD
Checked
TD
Dwg no
TD-LAB-02

Line key

  • Object
  • rpool
  • fast
  • bulk
  • Went in
  • Came out
  • Cold air
  • Hot air

At a glance

CPUs
2 × E5‑2690 v2
Threads
40
Memory
128 GB
Storage
6 drives in 3 ZFS pools
Controller
HBA330

Six drives, three pools, twenty empty bays. Plenty of room for bad ideas.

The pools

  • rpool

    3-way mirror · about 220 GiB

    Boot and ISOs

    • Bay 0 Gigastone 256 GB SSD
    • Bay 1 Gigastone 256 GB SSD
    • Bay 24 Seagate ST300MP0004
  • fast

    2-way mirror · about 450 GiB

    VM disks

    • Bay 2 Crucial MX500 500 GB
    • Bay 3 Crucial MX500 500 GB
  • bulk

    Single disk · about 930 GiB

    Scratch and sandboxes

    • Bay 4 Crucial MX500 1 TB