Hard Disk Drives

TLDR : The difference is in the number of platters and the cache. The WD22PURZ is newer with probably 1 disc and 256MB cache. There are 2 variants of 2TB Purple drives that can be ordered for the Q4 22 channel. The difference between the two is the higher recording d...

In WD Red plus family, there are multiple variants in 4TB, 6TB, 8TB, 14TBcapacity. They are all CMR drives being RED plus but with different hardware specifications. Annual work load, warranty and MTBF etc are all the same for these models , except RPM and Cache  ( a...

As hard drive technology evolves, new products come to market and part numbers change. Seagate Exos is no exception. Part numbers change on average every 2 quarters, with some new part numbers being introduced every 6 months and some old ones being made EOL We have t...

It was almost a year ago when Seagate unveiled the specifications for the Mach.2 drive and planned to launch only SAS drives that would present themselves to the host as 2 LUNs. Since SATA 's specifications do not allow for multiple LUNs, there was no plan to bring a SATA...

The two industry giants- Seagate and WD do offer a limited warranty for their hard drives, but this limitation has not been officially mentioned on their websites for years now . We as a partner get a diminished value of the drive with each passing year and often hav...

The Seagate X20 platform is a 5-disc drive with 2 capacities - 18TB and 20TB. The number of SKUs is significantly lower on this platform thanks to Seagate FastFormat, which lets you quickly format a drive to 512e or 4Kn. They ship in 512e format (which is the most popular f...

Western Digital (WD) offer different series of hard drives, each one suited for a specific purpose. WD has colored their drives based on the function each one is optimized for. Currently there are 6 colors, each one representing a pr...

What is a self-encrypting drive (SED) A self-encrypting drive (SED) is a drive with a built-in encryption mechanism so that all data written to the drive is automatically encrypted. The encryption hardware is built into the drive, including a processor - you d...

What is WD ArmorCache In a nutshell - WD ArmorCache is a non-volatile cache in hard drives that improves performance and reduces the risk of data loss associated with traditional DRAM based caching. Traditional solutions - DRAM caching - small, expensive a...

Back in May, WD announced 22TB and 26TB drives, and these drives are now commercially available in the Middle East .Ultrastar 22TB HC570 drivesHC570 is the 10-disk CMB drive that also uses OptiNand just like the 20TB drive. As with the other Ul...