Display Disk Path Status Serial Resource Path  ASP Unit Number Type Model Name Status 1 1 Y85FB50002E7 D840 040 DMP002 Active Y85FB50002E7 D840 040 DMP001 Active * * Y85FB50002E8 D840 040 DPH001 Active Y85FB50002E8 D840 040 DPH010 Active * * Y85FB50002E9 D840 040 DPH002 Active Y85FB50002E9 D840 040 DPH011 Active * * Y85FB50002EA D840 040 DPH003 Active Y85FB50002EA D840 040 DPH012 Active * * Y85FB50002EB D840 040 DPH004 Active Y85FB50002EB D840 040 DPH013 Active * * Y85FB50002EC D840 040 DPH005 Active Y85FB50002EC D840 040 DPH014 Active * * Y85FB50002ED D840 040 DPH006 Active Y85FB50002ED D840 040 DPH015 Active More...   Press Enter to continue.  F3=Exit F5=Refresh F9=Display disk unit details  F11=Display encryption status F12=Cancel  Figure 6-7 FlashSystem 900 LUNs reported on IBM i in SST The least significant six digits of an IBM i disk unit serial number for a FlashSystem 900 LUN  come from the volume unique identifier (UID) as assigned by the FlashSystem 900 as shown  in Figure 6-8. The first five digits of the serial number following the letter “Y” are a unique hash  value built by IBM i, which cannot be used to identify a particular storage system. Unlike with other 512-byte storage systems supported by IBM i that require allocation of 9x  512-byte disk sectors to store a 4 KB IBM i memory page, with the 4096 byte sector support  by IBM FlashSystem 900 almost the full storage volume capacity is available for IBM i data. Figure 6-8 FlashSystem 900 AE3 GUI Properties for Volume Chapter 6. IBM FlashSystem 900 client host attachment and implementation  165 Last 6 digits of volume  UID are part of t he IBM i  disk unit serial  n umber