HP

The trays/caddies have been removed from a working system (e.g. server). These products vary in their usage due to the age of system & type of service etc.. However, Used System Pulls are fully tested and all handling is performed by trained technicians, taking full ESD precautions.

Nearly all HPE Server enterprise hard drives come with a tray, but the trays are often abbreviated in the product title.  Here is a brief explanation of the different types of these caddys.

• ::  SmartDrive Carrier trays (SC) have Smart Carrier Authentication technology to verify that both the drive and carrier are HP-qualified options. This means that you would not be able to use the SmartDrive carrier with a third-party drive since the Smart Carrier Authentication will make sure users are using genuine HPE drives. HP SmartDrive carriers will not fit in ProLiant servers prior to Gen8 servers. HPE SmartDrive Carrier trays are available in 2.5 (SFF) and 3.5 form factors. HPE SmartDrive trays (caddys) have LED lights that displays the current status of your plugged-in drive. 
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•   ::  SmartDrive Carrier Converter trays (SCC) tray adapters designed to house select 2.5 Inch hard drives and 2.5 Inch solid state drives. SmartDrive Carrier Converter trays are adapters used to convert form factors so you can place a 2.5 Inch hard drive (SFF) into a 3.5 Inch drive tray (LFF). When converting a 2.5" to a 3.5", you remove the drive and place it inside the adapter, then you screw the adapter into the SmartDrive Carrier tray. This allows you to place and use 2.5" storage devices in select ProLiant Servers with 3.5" (LFF) drive bays.
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• ::  Low Profile Carrier Trays (also referred to as Apollo Trays) are compatible with select Gen10 HPE ProLiant servers and select HPE Apollo systems. Low Profile Carrier Trays (LPC) drive trays are often abbreviated "LP" which stands for "low profile". Low Profile trays are only available in 3.5 large form factors. They are different from SmartDrive Carrier trays as they are missing the "do not remove" button and the Activity Ring. HPE Low Profile Carrier Trays use very similar LED definitions and can predict if a hard drive will fail much like the SmartDrive Carrier trays. 
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• ::  Gen7 trays are hot-swappable SAS/SATA legacy style trays for Gen7 and older generation servers. These trays are often referred to as "G7 trays" and have a great range of compatibility as they are compatible with gen5/gen6 ProLiant servers as well which makes these trays very versatile. These trays often include a blue or silver bracket on the bottom called a "sled" which allows air to circulate throughout the drive. G7 trays are available in both 2.5 small form factor and 3.5 large form factor.
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• ::  Quick Release tray (QR) are often abbreviated QR in hard drive descriptions. These trays are silver trays that drives are inserted into and secured without the use of screws. The drives are instead secured by the tray itself and can quickly be released from the tray and pull out thus the name quick release trays. Quick Release trays are for both 2.5 SFF  and 3.5 form factors.

•   ::  Basic Carrier Trays.   Introducing the next generation of HPE hard drive trays, the HPE Basic Carrier tray, often abbreviated as "BC." The basic carrier tray is very similar to a SmartCarrier tray, but features a more simplified design. The Basic Carrier tray is missing the spinning activity ring that was present in the SmartCarrier tray, which displayed the activity of the drive. Basic Carrier trays also differ from SmartCarrier trays based on their compatibility. Basic carrier trays are only compatible with Gen10+ HPE ProLiant servers whereas smartcarrier trays are compatible with Gen10 and backwards compatible with Gen9 and Gen8 HPE ProLiant servers.

• The HPE P03761-001 Basic Carrier Tray is the tray that is often accompanied with Gen10+ hard drives.

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