MAIWO 4 Bay Hard Drive Duplicator Dock for 2.5" & 3.5" SATA SSD HDD,SATA Offline Cloner/Duplicator with Indicator Light,80TB(4x20TB) Storage Expansion

Now I have 63 TBs on my computer as a musician. I need all kinds of space for my hundreds of thousands of files and this just fits the bill perfectly. It's fastest dependable and it's constant unlike others that just lose track.

The device requires to format even if the drives are already formatted. The device disconnects each drive every 10 minutes and then reconnects each of them instead of going into sleep mode. Poor design try some other companies. You need to really know computers to use this with your PC, this is not for a novice and if you know PC, you would know this device stinks.

No es muy buenoSe re inicia cuando lees 2 discos a la vez.. no lo probe como duplicador solo lo uso para mis ssd

EDIT: 2023/05/18I am returning the unit. It is NOT possible to make this work with OMV at all, a Debian Linux version. See the end of the review for things tried.-------------Let me start by saying this device, overall, works just fine, although I did not test all functionality offered. It uses a JMicron controller.Functionality NOT tested: - cloning; currently no need for it - eSATA - hot-swap; 30+ years PC user, and sooner or later a hot-swap will be catastrophic so I avoid it like the plagueI am not sure what speeds the USB speed connector on the dock is supposed to be. On the one hand it mentions USB Superspeed , but it also mentions UASP... Superspeed != UASP (as per my understanding)Initially I hooked this up to T440 laptop running Windows 10. It worked fine when placing 2 14TB Seagate drives in slots 1 and 4 (viewed from the front.) Windows detected both drives separately.Then hooked it up to a HP Prodesk 800 G4 Mini. This is a dual boot PC - Windows 11 and Debian Open Media Vault (OMV). The HP PC has several USB 3.1 Gen 1 ports on it.Windows 11 - Should be able to support UASP just fine with the aforementioned USB ports. but I could not confirm this. The dock functioned just fine.Debian OMV - This is where it gets interesting - and it is is NOT just Debian that has this issue! This unit suffers from the same issue that so many others using the JMicron chip does... The flavor of Linux you are using must jump through some hoops to display the drives INDIVIDUALLY, as the JMicron controller "incorrectly report identical serial numbers" thus resulting in only 1 individual drive showing up, or 1 huge drive showing up. This particular flavor of JMicron controller had this issue; later versioned controllers may no longer have but I cannot speak to that.My main use for the dock was to run my OMV NAS. The 2 drives were initially formatted as NTFS (under Windows 10), and added to OMV as such, They were later reformatted as BTRFS. In BOTH cases did the JMicron controller present a problem... Initially it works just fine, but after "a while, < 2 hours in my case", the filesystem is unmounted and re-assigned to a different device name ie. sdab becomes sdad, thus breaking any shares created.My preferred filesystem is BTRFS... Aaaarg! Speaking only for (Debian) OMV, it supposedly "provides a UDEV rules database which will fix" this issue. Well, it does not using BTRFS! I managed to correct this behavior by formatting the drives as EXT4, and the dock has been rock solid since.So who is to blame? IMO, JMicron chips are shite and really should be avoided depending on your OS. The Linux flavored OS'es also bear some responsibility for not providing100% reliable solutions in all cases. Caveat Emptor!!THINGS TRIED:- Edit /etc/default/grub and change the line starting with GRUB_CMDLINE_LINUX_DEFAULT to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1 pci=noearly acpi_no_static_ssdt acpi_sleep=nonvs amd_immu=force_isolation"- Edit /etc/default/grub and change the line starting with GRUB_CMDLINE_LINUX_DEFAULT to GRUB_CMDLINE_LINUX_DEFAULT="quiet usbcore.autosuspend_delay_ms=-1 usbcore.autosuspend=-1"- Edit /sys/module/usbcore/parameters/autosuspend. Change value (default 2) to -1. It simply reverts to 2 on each reboot. - Edited ROOT's crontab. Essentially added & experimented with variations of this line:* * * * * bash -c 'dd if=/dev/disk/by-uuid/THE-UUID of=/dev/null count=1 skip=$RANDOM'My sweet spot was */8 * * * *. Added 2 of these entries, 1 for each of my drives.The GOOD news: Not once during 1.5 days of testing did the drive IDs change; /dev/SDB stayed /dev/SDB etc.The BAD news: The USB enclosure still disconnected. While OMV was stable in drive assignment, the SMB shares were not... The shares would still be there, but would be "empty". One could not write to the share, but it no longer reported a catastrophic error. Closing the share & reopening it would bring it back to life, but it would take like 30+ seconds.

Works OKAY come but I'm unable to get the cloning to work.

This dock is built very nice and performs flawlessly. It has no springs, no fans, and it's low profile for great heat dissipation. The drives are secure and stable. It has adapters for smaller laptop drives, and thin SSDs will work too. Worthy of 5 stars in every respect except one: It's not 100% hot swappable.I have used dozens of USB multi-drive docks over many years. I could hot swap any inactive drives or add new drives without disturbing the other drives which might be in use. Not so this dock.Every time I remove an inactive drive, or add one, ALL drives briefly disconnect, then come back in a different disk order (watch the disk management console to see this in action). If you have anything actively reading or writing a drive in the dock it will fail and abort.I tested this dock on two computers with completely different hardware and chipset manufacturers. It's the dock/drivers. (Yes. contrary to the description, it does install drivers. But it does so cleanly and automatically).If no drives are being accessed then there is no issue with the disconnect/shuffle/reconnect and hot-swapping drives works fine. (Yes all the drives I use are hot-swappable capable.)This isn't an absolute deal breaker for me so I'm keeping the dock, but it is a disappointment. I didn't expect this to be an issue in 2022, when dock technology has been around for 20+ years.

Stopped working just a couple months after purchase. Tried to seek out support from "Website" simply a quick shell thrown up to give the impression that this is a real Chinese company, be sure to look for this in a slighter different form and a totally different name in the near future. A sales slash cash and run tactic. You keep making up new names and collecting money before the overwhelming major of your product fails, and then repeat.

Started having issues with few month running 24/7. One of the drives being recognized but fails to mount.