Why I'm installing on a raid array is not really a valid question to ask, if it should work it should work. To base your point on 'feelings' as in 'Windows 7 doesn't like' is something I'm simply not buying.
This is programming, programming has no feelings...from the consumers point of view, either its a feature or a bug. Now if Microsoft developing team choose to neglect it, that's not up to us.
Do you think Windows Server 2012 would work better?
Why not SSD and why boot drive in array? Well we got our reasons, to add, this is not an ordinary office worker's desktop computer.
I already wrote I re-flashed both the BIOS and the raid controller, thus your point about updating BIOS is invalid.
Yes to get the 'full' benefit of the BIOS i might want to try UEFI, now but if you read what I tried, it doesn't work. It freezes. Some tips here? Maybe some way to manually edit some *.EFI file...? I have no experience in this.
Same UEFI-USB that worked on a UEFI-only laptop didn't work on the Z420, same result (couldn't get past windows logo)
This is programming, programming has no feelings...from the consumers point of view, either its a feature or a bug. Now if Microsoft developing team choose to neglect it, that's not up to us.
Do you think Windows Server 2012 would work better?
Why not SSD and why boot drive in array? Well we got our reasons, to add, this is not an ordinary office worker's desktop computer.
I already wrote I re-flashed both the BIOS and the raid controller, thus your point about updating BIOS is invalid.
Yes to get the 'full' benefit of the BIOS i might want to try UEFI, now but if you read what I tried, it doesn't work. It freezes. Some tips here? Maybe some way to manually edit some *.EFI file...? I have no experience in this.
Same UEFI-USB that worked on a UEFI-only laptop didn't work on the Z420, same result (couldn't get past windows logo)

Z420 Pci Serial Port Driver
Just did a clean Win10Pro (v1803) install on a Z420 and saw the missing SAS driver. I downloaded SP72212 from HP's support site, but when I tried to install it I got the following warning: 'This computer currently contains driver versions newer than the versions you are about to install. Description: LSI SAS 9212-4i Driver for HP Z420 Base Model Workstation This package contains the LSI Serial Attached SCSI (SAS) 9212-4i. This package contains an upgrade to the LSI 9260-8i SAS Controller Firmware for supported workstation models that are running a supported operating system.
PCI Specifications | |
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Version | PCIe 3.0 |
Lanes | 8 |
RAID Level | Integrated RAID 0, 1, 1E, and 10 |
Data Burst Transfer Rate | Half Duplex x8, PCIe: 8000 MB/s |
Card Type | 3.3 V add-in card |
Voltage | 12 V ± 10% |
Power | Typical: 9.8 W, airflow minimum 200 LFM |
Certification | PCIe 3.0 compliant |
SAS Specifications | |
---|---|
Bandwidth | Half Duplex: 600 MB/s per lane |
Processor | LSI SAS2308/fusion MPT 2.0 |
Hp Z420 Sas Controller Driver Manual
Connectors | |
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Internal | Four 6 Gb/s SAS/SATA One x4 mini-SAS (SFF8087) |
External | Four 6 Gb/s SAS/SATA One x4 mini-SAS (SFF8088) |
Maximum Number of SCSI Devices | 256 non-RAID SAS/SATA devices |
OS Support | Windows 7 Professional (32/64-bit), Windows 8 Pro (64-bit) Linux SLED and RHEL |
Temperature | Operating: 32 to 131°F (0 to 55°C) Storage: -49 to 221°F (-45 to +105°C) |
Relative Humidity | Operating: 5 to 90% (non-condensing) Storage: 5 to 90% (non-condensing) |
Bracket | Full height and low profile |
MTBF | >2,000,000 hours |
Compliance | EMC: Class B-US (CFR 47, P15B), Canada (ICES-003), Japan (V-3/02.04), Europe (EN55022/EN55024), Australia/New Zealand (AS/NZS 3548) Safety: EN60950, RoHS, WEEE |
Dimensions (H x W) | 2.6 x 6.6' (6.6 x 16.7 cm) |
Hp Z420 Sas Controller Driver Free

Hp Z420 Sas Controller Driver Windows 7
Packaging Info | |
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Package Weight | 0.95 lb |
Box Dimensions (LxWxH) | 9.9 x 8.2 x 2.6' |