Can I turn each hard drive off or are they all on one switch?

each one has a power switch. I use these for systems that require a fast clone recovery. I hook up the two top bays to power and data. Put the system drive in the top bay. Place a drive to be cloned into the center. Clone it. Then store it in the bottom not hooked up bay. In case of failure just put the spare in the online slot. Back up in seconds not hours or days.

I see this can interface with sas drives - does it act as a sas controller or does my board need to have an sas controller?

No, the HSB3SATSASBA allows SAS drives to connect but is not a SAS controller. Your computer will still need a SAS controller to read the drives. Matt, StarTech.com Support

Does anyone know if this will fit into an hp z640? worried about how it slides in and mounts with the z640's 5.25" bays.

The HSB3SATSASBA has not been tested on an HP z640. The rack uses standard 5.25" mounting points. Brandon, StarTech.com Support

will this function normally if mounted sideways?

It should, there are cases, storage devices, and NAS devices from big name manufacturers where hard drives are positioned on their side with no problems.

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StarTech 3-Bay 3.5in SATA SAS Trayless Backplane, 6Gbps (HSB3SATSASBA)

Product ID: 56271250

Details

Brand
StarTech
Colour
Black
Hardware interface
SAS
Hardware platform
PC
Product dimensions
19.4L x 14.6W

⚡6Gbps SATA/SAS interface

💾3 hot-swappable 3.5in bays

❄️Aluminum vented enclosure + fan

NZ$394

Duties & taxes included

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💼 Elevate your storage game with seamless speed and security!

IT PRO TRUSTED RELIABILITY - Backed by 2-year warranty and 24/5 multilingual tech support for peace of mind.
TRIPLE DRIVE HOT SWAP POWER - Seamlessly swap up to 3 drives without downtime, maximizing your workflow efficiency.
OPTIMIZED THERMAL MANAGEMENT - Vented aluminum chassis plus speed-controlled fan keeps drives cool under pressure.
SECURE QUICK TRAYLESS DESIGN - Individual ejection levers with key-lock security ensure fast, safe drive swaps.
UNIVERSAL SATA SAS COMPATIBILITY - Supports SATA I/II/III and SAS I/II drives for ultimate enterprise flexibility.

The StarTech 3-Bay 3.5in SATA SAS Trayless Backplane (HSB3SATSASBA) transforms two 5.25in bays into a hot-swappable, high-speed 6Gbps interface supporting up to three 3.5in SATA or SAS drives. Featuring a vented aluminum enclosure with a speed-controlled fan, it ensures optimal cooling and reliability. Designed for IT professionals, it offers secure trayless drive ejection with key-locks and is backed by a 2-year warranty plus lifetime 24/5 technical support.

Specifications

ASIN	B00HS23QZO
Best Sellers Rank	57,572 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 266 in Enclosures
Box Contents	Storage mobile rack
Brand Name	StarTech
Colour	Black
Compatible Devices	PC
Customer Reviews	4.4 4.4 out of 5 stars (560)
Data Transfer Rate	6 Megabits Per Second
EU Spare Part Availability Duration	2 Years
Enclosure Material	Aluminium
Global Trade Identification Number	00065030855297
Hardware Interface	SAS
Hardware Platform	PC
Item Dimensions L x W x H	19.4L x 14.6W x 8.5H centimetres
Item Type Name	Startech.Com HSB3SATSASBA 3 Bay Trayless Hot Swap 3.5" SATA HDD Mobile Rack Backplane, Storage, Black
Item Weight	0.87 Kilograms
Manufacturer	StarTech.com
Manufacturer Part Number	HSB3SATSASBA
Memory Storage Capacity	6 GB
Model Number	HSB3SATSASBA
Network Connectivity Technology	SATA
Number of Items	1
Number of Packs	1
Supported Devices Quantity	3
The Standard Size of the Hard Drive or the Bay the Hard Drive Is Compatible With (in inches)	3.5 Inches
UPC	065030855297
Unit Count	1.0 count

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NZ$394

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Best international shipping I've ever tried. Worth every penny!

3 days ago

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Smooth transaction and product arrived in perfect condition.

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