GLYPH<SM590000> Dynamic I/O support 

Provided for managing the configuration of OSA-Express7S and OSA-Express6S OSD CHPIDs, FICON Express16S+ FC and FCP CHPIDs, zHyperLink Express, RoCE Express2 features, and Regional Crypto Enablement (RCE) 

GLYPH<SM590000> Improved memory management 

For more information about supported functions and their minimum required support levels, see 7.3, “z14 ZR1 features and func tion support overview” on page 214. 

Statements of Directions$^{a}$:  Consider the following points: 

GLYPH<SM590000> Future z/VM release guest support: z/VM V6.4 is the last release that is supported as a guest of z/VM V6.2 or older releases. 

GLYPH<SM590000> Disk-only support for z/VM dumps: z/VM V6.4 is the last z/VM release to support tape as a media option for stand-alone, hard abend, and snap dumps. Subsequent releases will support dumps to ECKD DASD or FCP SCSI disks only. 

a. All statements regarding IBM plans, directions, and intent are subject to change or withdrawal without notice. Any reliance on these statements of general direction is at the relying party’s sole risk and will not create liability or obligation for IBM. 

## 7.2.3 z/VSE 

z14 ZR1 support is provided by z/VSE V5R2$^{2}$ and later with PTFs, with the following considerations: 

GLYPH<SM590000> z/VSE runs in z/Architecture mode only. 

GLYPH<SM590000> z/VSE supports 64-bit real and virtual addressing. 

For more information about supported functions and their minimum required support levels, see 7.3, “z14 ZR1 features and func tion support overview” on page 214. 

## 7.2.4 z/TPF 

z14 ZR1 support is provided by z/TPF V1R1 with PTFs. For more information about supported functions and their minimum required support levels, see 7.3, “z14 ZR1 features and function support overview” on page 214. 

## 7.2.5 Linux on Z 

Generally, a new machine is not apparent to Linux on Z. For z14 ZR1, toleration support is required for the following functions and features: 

GLYPH<SM590000> IPL in “z/Architecture” mode 

GLYPH<SM590000> Crypto Express6S cards 

GLYPH<SM590000> RoCE Express cards 

GLYPH<SM590000> 8-byte LPAR offset 

